./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:30:48,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:30:48,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:30:48,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:30:48,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:30:48,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:30:48,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:30:48,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:30:48,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:30:48,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:30:48,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:30:48,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:30:48,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:30:48,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:30:48,816 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:30:48,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:30:48,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:30:48,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:30:48,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:30:48,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:30:48,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:30:48,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:30:48,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:30:48,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:30:48,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:30:48,819 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:30:48,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:30:48,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:30:48,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:30:48,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:30:48,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:30:48,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:30:48,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:30:48,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:30:48,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:30:48,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:30:48,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:30:48,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:30:48,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:30:48,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:30:48,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:30:48,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:30:48,824 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-10-11 14:30:49,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:30:49,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:30:49,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:30:49,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:30:49,155 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:30:49,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-11 14:30:50,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:30:50,942 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:30:50,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-11 14:30:50,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d53a7e89/ddd11f93fd4a4b15875270db32c14ae5/FLAGafc6f138d [2024-10-11 14:30:50,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d53a7e89/ddd11f93fd4a4b15875270db32c14ae5 [2024-10-11 14:30:50,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:30:50,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:30:50,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:30:50,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:30:50,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:30:50,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:50" (1/1) ... [2024-10-11 14:30:50,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ad63c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:50, skipping insertion in model container [2024-10-11 14:30:50,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:50" (1/1) ... [2024-10-11 14:30:51,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:30:51,239 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-10-11 14:30:51,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:30:51,261 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:30:51,295 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-10-11 14:30:51,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:30:51,324 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:30:51,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51 WrapperNode [2024-10-11 14:30:51,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:30:51,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:30:51,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:30:51,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:30:51,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,376 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 312 [2024-10-11 14:30:51,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:30:51,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:30:51,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:30:51,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:30:51,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,419 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 14:30:51,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:30:51,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:30:51,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:30:51,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:30:51,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (1/1) ... [2024-10-11 14:30:51,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:30:51,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:51,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:30:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:30:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:30:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:30:51,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:30:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:30:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:30:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:30:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:30:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:30:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:30:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:30:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:30:51,529 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:30:51,646 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:30:51,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:30:52,130 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:30:52,130 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:30:52,493 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:30:52,494 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:30:52,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:52 BoogieIcfgContainer [2024-10-11 14:30:52,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:30:52,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:30:52,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:30:52,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:30:52,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:50" (1/3) ... [2024-10-11 14:30:52,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e07f5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:52, skipping insertion in model container [2024-10-11 14:30:52,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:51" (2/3) ... [2024-10-11 14:30:52,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e07f5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:52, skipping insertion in model container [2024-10-11 14:30:52,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:52" (3/3) ... [2024-10-11 14:30:52,507 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-10-11 14:30:52,528 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:30:52,528 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:30:52,528 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:30:52,601 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:30:52,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 117 flow [2024-10-11 14:30:52,689 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-10-11 14:30:52,690 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:30:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 8/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-11 14:30:52,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 117 flow [2024-10-11 14:30:52,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 106 flow [2024-10-11 14:30:52,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:30:52,719 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;@1d604d65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:30:52,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:30:52,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:30:52,737 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-10-11 14:30:52,737 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:30:52,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:52,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:52,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1548629740, now seen corresponding path program 1 times [2024-10-11 14:30:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:52,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041788026] [2024-10-11 14:30:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041788026] [2024-10-11 14:30:53,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041788026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:53,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:30:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882818091] [2024-10-11 14:30:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:53,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:30:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:30:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:30:53,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:53,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:53,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:53,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:53,472 INFO L124 PetriNetUnfolderBase]: 1049/1799 cut-off events. [2024-10-11 14:30:53,472 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-11 14:30:53,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 1799 events. 1049/1799 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9508 event pairs, 858 based on Foata normal form. 165/1779 useless extension candidates. Maximal degree in co-relation 3107. Up to 1394 conditions per place. [2024-10-11 14:30:53,496 INFO L140 encePairwiseOnDemand]: 46/48 looper letters, 32 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-10-11 14:30:53,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 166 flow [2024-10-11 14:30:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:30:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:30:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-10-11 14:30:53,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 14:30:53,514 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 106 flow. Second operand 2 states and 60 transitions. [2024-10-11 14:30:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 166 flow [2024-10-11 14:30:53,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:30:53,526 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 90 flow [2024-10-11 14:30:53,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-10-11 14:30:53,535 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-10-11 14:30:53,536 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 90 flow [2024-10-11 14:30:53,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:53,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:53,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:53,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:30:53,537 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:53,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1379772624, now seen corresponding path program 1 times [2024-10-11 14:30:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:53,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313793718] [2024-10-11 14:30:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:53,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:53,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313793718] [2024-10-11 14:30:53,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313793718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:53,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:53,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:53,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49962344] [2024-10-11 14:30:53,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:53,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:53,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:53,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:53,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:53,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:53,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:53,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:54,111 INFO L124 PetriNetUnfolderBase]: 1040/1732 cut-off events. [2024-10-11 14:30:54,113 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 14:30:54,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1732 events. 1040/1732 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8672 event pairs, 266 based on Foata normal form. 33/1662 useless extension candidates. Maximal degree in co-relation 3220. Up to 1251 conditions per place. [2024-10-11 14:30:54,128 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-10-11 14:30:54,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 208 flow [2024-10-11 14:30:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 14:30:54,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-10-11 14:30:54,132 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 90 flow. Second operand 3 states and 85 transitions. [2024-10-11 14:30:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 208 flow [2024-10-11 14:30:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:30:54,137 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 109 flow [2024-10-11 14:30:54,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-10-11 14:30:54,138 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-10-11 14:30:54,138 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 109 flow [2024-10-11 14:30:54,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:54,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:54,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:54,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:30:54,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:54,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash 58375550, now seen corresponding path program 2 times [2024-10-11 14:30:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:54,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77141852] [2024-10-11 14:30:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:54,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:54,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77141852] [2024-10-11 14:30:54,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77141852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:54,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:54,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142211981] [2024-10-11 14:30:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:54,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:54,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:54,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:54,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:54,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:54,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:54,553 INFO L124 PetriNetUnfolderBase]: 871/1554 cut-off events. [2024-10-11 14:30:54,554 INFO L125 PetriNetUnfolderBase]: For 239/241 co-relation queries the response was YES. [2024-10-11 14:30:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1554 events. 871/1554 cut-off events. For 239/241 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7971 event pairs, 315 based on Foata normal form. 32/1477 useless extension candidates. Maximal degree in co-relation 3132. Up to 794 conditions per place. [2024-10-11 14:30:54,566 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-10-11 14:30:54,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 237 flow [2024-10-11 14:30:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 14:30:54,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-10-11 14:30:54,569 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 109 flow. Second operand 3 states and 85 transitions. [2024-10-11 14:30:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 237 flow [2024-10-11 14:30:54,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:54,572 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 118 flow [2024-10-11 14:30:54,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-10-11 14:30:54,574 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-10-11 14:30:54,574 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 118 flow [2024-10-11 14:30:54,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:54,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:54,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:54,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:30:54,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:54,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2118938302, now seen corresponding path program 3 times [2024-10-11 14:30:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:54,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802096600] [2024-10-11 14:30:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:54,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802096600] [2024-10-11 14:30:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802096600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:54,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:54,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002662431] [2024-10-11 14:30:54,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:54,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:54,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:54,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:54,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:54,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:54,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:55,018 INFO L124 PetriNetUnfolderBase]: 1319/2209 cut-off events. [2024-10-11 14:30:55,018 INFO L125 PetriNetUnfolderBase]: For 472/500 co-relation queries the response was YES. [2024-10-11 14:30:55,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2209 events. 1319/2209 cut-off events. For 472/500 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12431 event pairs, 426 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 4904. Up to 1175 conditions per place. [2024-10-11 14:30:55,030 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2024-10-11 14:30:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 286 flow [2024-10-11 14:30:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-11 14:30:55,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-10-11 14:30:55,033 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 118 flow. Second operand 3 states and 94 transitions. [2024-10-11 14:30:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 286 flow [2024-10-11 14:30:55,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:55,035 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 124 flow [2024-10-11 14:30:55,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-11 14:30:55,036 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-11 14:30:55,037 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 124 flow [2024-10-11 14:30:55,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:55,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:55,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:30:55,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:55,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2126932116, now seen corresponding path program 1 times [2024-10-11 14:30:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518098118] [2024-10-11 14:30:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518098118] [2024-10-11 14:30:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518098118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:55,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:55,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:55,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223649326] [2024-10-11 14:30:55,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:55,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:55,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:55,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:55,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:55,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:55,288 INFO L124 PetriNetUnfolderBase]: 496/826 cut-off events. [2024-10-11 14:30:55,288 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-11 14:30:55,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 826 events. 496/826 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3791 event pairs, 190 based on Foata normal form. 44/825 useless extension candidates. Maximal degree in co-relation 1883. Up to 546 conditions per place. [2024-10-11 14:30:55,295 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-10-11 14:30:55,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 228 flow [2024-10-11 14:30:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-11 14:30:55,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-11 14:30:55,298 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 124 flow. Second operand 3 states and 80 transitions. [2024-10-11 14:30:55,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 228 flow [2024-10-11 14:30:55,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:55,301 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 132 flow [2024-10-11 14:30:55,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-11 14:30:55,302 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-11 14:30:55,302 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 132 flow [2024-10-11 14:30:55,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:55,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:55,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:30:55,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:55,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1398072178, now seen corresponding path program 2 times [2024-10-11 14:30:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323010524] [2024-10-11 14:30:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:55,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323010524] [2024-10-11 14:30:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323010524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738129815] [2024-10-11 14:30:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:55,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:30:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:30:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:30:55,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:55,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:55,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:55,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:55,678 INFO L124 PetriNetUnfolderBase]: 545/932 cut-off events. [2024-10-11 14:30:55,679 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-10-11 14:30:55,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 932 events. 545/932 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4388 event pairs, 411 based on Foata normal form. 13/898 useless extension candidates. Maximal degree in co-relation 2176. Up to 745 conditions per place. [2024-10-11 14:30:55,685 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 35 selfloop transitions, 2 changer transitions 15/62 dead transitions. [2024-10-11 14:30:55,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 271 flow [2024-10-11 14:30:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:30:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:30:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-11 14:30:55,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-11 14:30:55,687 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 132 flow. Second operand 5 states and 114 transitions. [2024-10-11 14:30:55,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 271 flow [2024-10-11 14:30:55,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:55,689 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 146 flow [2024-10-11 14:30:55,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-10-11 14:30:55,692 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-10-11 14:30:55,692 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 146 flow [2024-10-11 14:30:55,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:55,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:55,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:30:55,693 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:55,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash 437576286, now seen corresponding path program 1 times [2024-10-11 14:30:55,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126080767] [2024-10-11 14:30:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:55,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:30:55,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126080767] [2024-10-11 14:30:55,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126080767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:55,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:30:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383630606] [2024-10-11 14:30:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:55,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:30:55,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:30:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:30:55,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:55,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:55,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:55,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:55,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:56,058 INFO L124 PetriNetUnfolderBase]: 570/981 cut-off events. [2024-10-11 14:30:56,058 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-10-11 14:30:56,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 981 events. 570/981 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4716 event pairs, 437 based on Foata normal form. 6/941 useless extension candidates. Maximal degree in co-relation 2323. Up to 746 conditions per place. [2024-10-11 14:30:56,064 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 36 selfloop transitions, 2 changer transitions 15/63 dead transitions. [2024-10-11 14:30:56,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 295 flow [2024-10-11 14:30:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:30:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:30:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-11 14:30:56,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-10-11 14:30:56,065 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-10-11 14:30:56,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 295 flow [2024-10-11 14:30:56,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 283 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-11 14:30:56,067 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 152 flow [2024-10-11 14:30:56,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-10-11 14:30:56,069 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-10-11 14:30:56,069 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 152 flow [2024-10-11 14:30:56,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:56,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:56,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:56,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:30:56,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1816335908, now seen corresponding path program 1 times [2024-10-11 14:30:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023945617] [2024-10-11 14:30:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:56,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:56,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023945617] [2024-10-11 14:30:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023945617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:56,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:30:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323887859] [2024-10-11 14:30:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:56,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:30:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:30:56,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:30:56,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:56,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:56,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:56,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:56,424 INFO L124 PetriNetUnfolderBase]: 602/1061 cut-off events. [2024-10-11 14:30:56,424 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-10-11 14:30:56,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1061 events. 602/1061 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5196 event pairs, 462 based on Foata normal form. 6/1012 useless extension candidates. Maximal degree in co-relation 2475. Up to 747 conditions per place. [2024-10-11 14:30:56,430 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 17/66 dead transitions. [2024-10-11 14:30:56,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 315 flow [2024-10-11 14:30:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:30:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:30:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-11 14:30:56,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-11 14:30:56,432 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 152 flow. Second operand 4 states and 102 transitions. [2024-10-11 14:30:56,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 315 flow [2024-10-11 14:30:56,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 307 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:30:56,435 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 160 flow [2024-10-11 14:30:56,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-10-11 14:30:56,436 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-10-11 14:30:56,436 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 160 flow [2024-10-11 14:30:56,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:56,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:56,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:56,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:30:56,438 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:56,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1361437026, now seen corresponding path program 1 times [2024-10-11 14:30:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284301870] [2024-10-11 14:30:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284301870] [2024-10-11 14:30:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284301870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480152320] [2024-10-11 14:30:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:56,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:56,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:56,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:30:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:56,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 14:30:56,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:57,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:57,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2024-10-11 14:30:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480152320] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:57,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-10-11 14:30:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170666401] [2024-10-11 14:30:57,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:57,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:30:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:30:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:30:57,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:30:57,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:57,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:30:57,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:58,000 INFO L124 PetriNetUnfolderBase]: 772/1342 cut-off events. [2024-10-11 14:30:58,001 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-10-11 14:30:58,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1342 events. 772/1342 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6989 event pairs, 380 based on Foata normal form. 36/1307 useless extension candidates. Maximal degree in co-relation 3154. Up to 649 conditions per place. [2024-10-11 14:30:58,009 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 43 selfloop transitions, 4 changer transitions 42/99 dead transitions. [2024-10-11 14:30:58,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 488 flow [2024-10-11 14:30:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:30:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:30:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-10-11 14:30:58,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-10-11 14:30:58,012 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 160 flow. Second operand 9 states and 199 transitions. [2024-10-11 14:30:58,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 488 flow [2024-10-11 14:30:58,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 476 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:30:58,016 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 180 flow [2024-10-11 14:30:58,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-10-11 14:30:58,018 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-10-11 14:30:58,018 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 180 flow [2024-10-11 14:30:58,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:58,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:58,019 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:30:58,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:30:58,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:58,220 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:30:58,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1083772964, now seen corresponding path program 2 times [2024-10-11 14:30:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142277365] [2024-10-11 14:30:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:58,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:58,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142277365] [2024-10-11 14:30:58,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142277365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:58,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744425610] [2024-10-11 14:30:58,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:30:58,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:58,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:58,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:58,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:30:59,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:30:59,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:30:59,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 14:30:59,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:30:59,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:59,641 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-10-11 14:30:59,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2024-10-11 14:30:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:30:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744425610] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:59,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:59,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 21 [2024-10-11 14:30:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416978911] [2024-10-11 14:30:59,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:59,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:30:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:59,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:30:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:30:59,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-11 14:30:59,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 180 flow. Second operand has 21 states, 21 states have (on average 15.333333333333334) internal successors, (322), 21 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:30:59,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:59,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-11 14:30:59,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:01,111 INFO L124 PetriNetUnfolderBase]: 1780/2882 cut-off events. [2024-10-11 14:31:01,111 INFO L125 PetriNetUnfolderBase]: For 1613/1625 co-relation queries the response was YES. [2024-10-11 14:31:01,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 2882 events. 1780/2882 cut-off events. For 1613/1625 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 16548 event pairs, 264 based on Foata normal form. 128/2852 useless extension candidates. Maximal degree in co-relation 7057. Up to 952 conditions per place. [2024-10-11 14:31:01,130 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 126 selfloop transitions, 18 changer transitions 22/174 dead transitions. [2024-10-11 14:31:01,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 174 transitions, 902 flow [2024-10-11 14:31:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:31:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:31:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 364 transitions. [2024-10-11 14:31:01,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2024-10-11 14:31:01,133 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 180 flow. Second operand 18 states and 364 transitions. [2024-10-11 14:31:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 174 transitions, 902 flow [2024-10-11 14:31:01,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 174 transitions, 860 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-11 14:31:01,141 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 295 flow [2024-10-11 14:31:01,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=295, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-10-11 14:31:01,142 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-10-11 14:31:01,142 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 295 flow [2024-10-11 14:31:01,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.333333333333334) internal successors, (322), 21 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:01,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:01,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:01,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:31:01,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:01,344 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:01,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1579971170, now seen corresponding path program 3 times [2024-10-11 14:31:01,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219884283] [2024-10-11 14:31:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219884283] [2024-10-11 14:31:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219884283] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608595176] [2024-10-11 14:31:02,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:31:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:02,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:02,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:31:02,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:31:02,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:02,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 14:31:02,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:02,740 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-10-11 14:31:02,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 13 [2024-10-11 14:31:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:02,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:03,019 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-10-11 14:31:03,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2024-10-11 14:31:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608595176] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:03,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 14:31:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145594893] [2024-10-11 14:31:03,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:03,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 14:31:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 14:31:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:31:03,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-11 14:31:03,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 295 flow. Second operand has 25 states, 25 states have (on average 14.56) internal successors, (364), 25 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:03,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-11 14:31:03,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:05,235 INFO L124 PetriNetUnfolderBase]: 1672/2745 cut-off events. [2024-10-11 14:31:05,235 INFO L125 PetriNetUnfolderBase]: For 3211/3211 co-relation queries the response was YES. [2024-10-11 14:31:05,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 2745 events. 1672/2745 cut-off events. For 3211/3211 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15076 event pairs, 118 based on Foata normal form. 30/2758 useless extension candidates. Maximal degree in co-relation 7545. Up to 850 conditions per place. [2024-10-11 14:31:05,260 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 177 selfloop transitions, 29 changer transitions 3/217 dead transitions. [2024-10-11 14:31:05,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 217 transitions, 1204 flow [2024-10-11 14:31:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:31:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:31:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 450 transitions. [2024-10-11 14:31:05,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2024-10-11 14:31:05,263 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 295 flow. Second operand 23 states and 450 transitions. [2024-10-11 14:31:05,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 217 transitions, 1204 flow [2024-10-11 14:31:05,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 217 transitions, 1147 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-10-11 14:31:05,275 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 396 flow [2024-10-11 14:31:05,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=396, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2024-10-11 14:31:05,276 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-10-11 14:31:05,276 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 396 flow [2024-10-11 14:31:05,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.56) internal successors, (364), 25 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:05,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:05,277 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:05,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:31:05,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:05,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:05,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2114155272, now seen corresponding path program 4 times [2024-10-11 14:31:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:05,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239499541] [2024-10-11 14:31:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:31:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:05,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239499541] [2024-10-11 14:31:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239499541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:05,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252828136] [2024-10-11 14:31:05,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:31:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:05,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:05,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:05,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:31:05,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:31:05,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:05,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 14:31:05,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:06,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:06,845 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-10-11 14:31:06,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2024-10-11 14:31:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:06,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252828136] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:06,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 23 [2024-10-11 14:31:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546738325] [2024-10-11 14:31:06,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:06,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:31:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:31:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:31:06,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-10-11 14:31:06,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 396 flow. Second operand has 23 states, 23 states have (on average 14.869565217391305) internal successors, (342), 23 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:06,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:06,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-10-11 14:31:06,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:09,938 INFO L124 PetriNetUnfolderBase]: 6006/9817 cut-off events. [2024-10-11 14:31:09,938 INFO L125 PetriNetUnfolderBase]: For 14929/14949 co-relation queries the response was YES. [2024-10-11 14:31:09,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28688 conditions, 9817 events. 6006/9817 cut-off events. For 14929/14949 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 68857 event pairs, 1529 based on Foata normal form. 144/9799 useless extension candidates. Maximal degree in co-relation 28668. Up to 1294 conditions per place. [2024-10-11 14:31:10,027 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 307 selfloop transitions, 59 changer transitions 67/441 dead transitions. [2024-10-11 14:31:10,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 441 transitions, 2918 flow [2024-10-11 14:31:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 14:31:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 14:31:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 765 transitions. [2024-10-11 14:31:10,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43074324324324326 [2024-10-11 14:31:10,032 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 396 flow. Second operand 37 states and 765 transitions. [2024-10-11 14:31:10,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 441 transitions, 2918 flow [2024-10-11 14:31:10,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 441 transitions, 2773 flow, removed 41 selfloop flow, removed 13 redundant places. [2024-10-11 14:31:10,066 INFO L231 Difference]: Finished difference. Result has 148 places, 125 transitions, 1040 flow [2024-10-11 14:31:10,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1040, PETRI_PLACES=148, PETRI_TRANSITIONS=125} [2024-10-11 14:31:10,066 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 102 predicate places. [2024-10-11 14:31:10,067 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 125 transitions, 1040 flow [2024-10-11 14:31:10,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.869565217391305) internal successors, (342), 23 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:10,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:10,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:10,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:31:10,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:31:10,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:10,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 576919198, now seen corresponding path program 1 times [2024-10-11 14:31:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298773801] [2024-10-11 14:31:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:31:10,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298773801] [2024-10-11 14:31:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298773801] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360097721] [2024-10-11 14:31:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:10,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:10,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:10,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:10,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:31:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:10,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 14:31:10,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:31:10,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:31:11,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360097721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:11,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:11,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-11 14:31:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166147902] [2024-10-11 14:31:11,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:31:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:31:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:31:11,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:31:11,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 125 transitions, 1040 flow. Second operand has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:11,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:11,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:31:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:12,832 INFO L124 PetriNetUnfolderBase]: 6352/11317 cut-off events. [2024-10-11 14:31:12,833 INFO L125 PetriNetUnfolderBase]: For 52222/52828 co-relation queries the response was YES. [2024-10-11 14:31:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38983 conditions, 11317 events. 6352/11317 cut-off events. For 52222/52828 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 89368 event pairs, 3101 based on Foata normal form. 573/11396 useless extension candidates. Maximal degree in co-relation 38937. Up to 4938 conditions per place. [2024-10-11 14:31:12,930 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 137 selfloop transitions, 13 changer transitions 40/220 dead transitions. [2024-10-11 14:31:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 220 transitions, 2150 flow [2024-10-11 14:31:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:31:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:31:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-10-11 14:31:12,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-10-11 14:31:12,932 INFO L175 Difference]: Start difference. First operand has 148 places, 125 transitions, 1040 flow. Second operand 9 states and 200 transitions. [2024-10-11 14:31:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 220 transitions, 2150 flow [2024-10-11 14:31:13,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 220 transitions, 1983 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-10-11 14:31:13,074 INFO L231 Difference]: Finished difference. Result has 146 places, 131 transitions, 1030 flow [2024-10-11 14:31:13,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1030, PETRI_PLACES=146, PETRI_TRANSITIONS=131} [2024-10-11 14:31:13,075 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 100 predicate places. [2024-10-11 14:31:13,076 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 131 transitions, 1030 flow [2024-10-11 14:31:13,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:13,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:13,078 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:13,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 14:31:13,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 14:31:13,279 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:13,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1594781800, now seen corresponding path program 5 times [2024-10-11 14:31:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043837017] [2024-10-11 14:31:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 14:31:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043837017] [2024-10-11 14:31:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043837017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:13,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:31:13,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304834355] [2024-10-11 14:31:13,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:13,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:31:13,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:31:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:31:13,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 14:31:13,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 131 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:13,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:13,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 14:31:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:17,358 INFO L124 PetriNetUnfolderBase]: 14094/25913 cut-off events. [2024-10-11 14:31:17,359 INFO L125 PetriNetUnfolderBase]: For 105652/107457 co-relation queries the response was YES. [2024-10-11 14:31:17,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85668 conditions, 25913 events. 14094/25913 cut-off events. For 105652/107457 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 242486 event pairs, 4428 based on Foata normal form. 1055/25418 useless extension candidates. Maximal degree in co-relation 85622. Up to 7359 conditions per place. [2024-10-11 14:31:17,918 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 189 selfloop transitions, 9 changer transitions 0/228 dead transitions. [2024-10-11 14:31:17,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 228 transitions, 2218 flow [2024-10-11 14:31:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:31:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:31:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-11 14:31:17,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-10-11 14:31:17,920 INFO L175 Difference]: Start difference. First operand has 146 places, 131 transitions, 1030 flow. Second operand 4 states and 118 transitions. [2024-10-11 14:31:17,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 228 transitions, 2218 flow [2024-10-11 14:31:18,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 228 transitions, 2192 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:18,095 INFO L231 Difference]: Finished difference. Result has 148 places, 138 transitions, 1112 flow [2024-10-11 14:31:18,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1112, PETRI_PLACES=148, PETRI_TRANSITIONS=138} [2024-10-11 14:31:18,095 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 102 predicate places. [2024-10-11 14:31:18,095 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 138 transitions, 1112 flow [2024-10-11 14:31:18,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:18,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:18,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:18,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:31:18,096 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:18,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash 607746678, now seen corresponding path program 2 times [2024-10-11 14:31:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:18,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150582800] [2024-10-11 14:31:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:31:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150582800] [2024-10-11 14:31:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150582800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980192137] [2024-10-11 14:31:20,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:31:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:20,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:20,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:31:20,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:31:20,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:20,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-11 14:31:20,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:20,243 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 [2024-10-11 14:31:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:20,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:31:22,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980192137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:22,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:22,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 13] total 39 [2024-10-11 14:31:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497127072] [2024-10-11 14:31:22,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:22,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 14:31:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 14:31:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 14:31:22,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-10-11 14:31:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 138 transitions, 1112 flow. Second operand has 39 states, 39 states have (on average 11.76923076923077) internal successors, (459), 39 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:22,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-10-11 14:31:22,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:29,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 14:31:33,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 14:31:40,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 14:31:44,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:31:49,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:31:53,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:31:58,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:32:04,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:32:05,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]