./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:29:16,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:29:16,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:29:16,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:29:16,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:29:16,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:29:16,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:29:16,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:29:16,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:29:16,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:29:16,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:29:16,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:29:16,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:29:16,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:29:16,520 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:29:16,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:29:16,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:29:16,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:29:16,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:29:16,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:29:16,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:29:16,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:29:16,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:29:16,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:29:16,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:29:16,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:29:16,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:29:16,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:29:16,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:29:16,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:29:16,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:29:16,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:29:16,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:29:16,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:29:16,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:29:16,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:29:16,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:29:16,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:29:16,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:29:16,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:29:16,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:29:16,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:29:16,531 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-12 08:29:16,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:29:16,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:29:16,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:29:16,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:29:16,850 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:29:16,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-12 08:29:18,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:29:18,564 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:29:18,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-12 08:29:18,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73e9bc944/c95d002bc84946af95aa8b2da576f992/FLAG95efbdcad [2024-11-12 08:29:18,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73e9bc944/c95d002bc84946af95aa8b2da576f992 [2024-11-12 08:29:18,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:29:18,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:29:18,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:29:18,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:29:18,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:29:18,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7352bb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18, skipping insertion in model container [2024-11-12 08:29:18,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:29:18,850 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-11-12 08:29:18,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:29:18,870 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:29:18,891 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-11-12 08:29:18,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:29:18,911 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:29:18,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18 WrapperNode [2024-11-12 08:29:18,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:29:18,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:29:18,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:29:18,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:29:18,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,955 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 138 [2024-11-12 08:29:18,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:29:18,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:29:18,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:29:18,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:29:18,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,986 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-12 08:29:18,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:18,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:19,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:19,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:19,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:19,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:29:19,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:29:19,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:29:19,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:29:19,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (1/1) ... [2024-11-12 08:29:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:29:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:19,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 08:29:19,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 08:29:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:29:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:29:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:29:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:29:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:29:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:29:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:29:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:29:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:29:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:29:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:29:19,099 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:29:19,195 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:29:19,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:29:19,507 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:29:19,507 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:29:19,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:29:19,850 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 08:29:19,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:29:19 BoogieIcfgContainer [2024-11-12 08:29:19,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:29:19,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:29:19,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:29:19,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:29:19,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:29:18" (1/3) ... [2024-11-12 08:29:19,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c70273f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:29:19, skipping insertion in model container [2024-11-12 08:29:19,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:18" (2/3) ... [2024-11-12 08:29:19,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c70273f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:29:19, skipping insertion in model container [2024-11-12 08:29:19,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:29:19" (3/3) ... [2024-11-12 08:29:19,862 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-12 08:29:19,881 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:29:19,881 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:29:19,881 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:29:19,942 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:29:19,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-11-12 08:29:20,029 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-12 08:29:20,033 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:29:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-12 08:29:20,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-11-12 08:29:20,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-11-12 08:29:20,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:29:20,070 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;@6e50743e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:29:20,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:29:20,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:29:20,088 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-11-12 08:29:20,088 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:29:20,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:20,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:20,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:20,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1514226813, now seen corresponding path program 1 times [2024-11-12 08:29:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:20,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99897941] [2024-11-12 08:29:20,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:20,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99897941] [2024-11-12 08:29:20,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99897941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:20,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:29:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280827871] [2024-11-12 08:29:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:20,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:29:20,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:29:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:29:21,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-12 08:29:21,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:21,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:21,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-12 08:29:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:21,321 INFO L124 PetriNetUnfolderBase]: 638/1043 cut-off events. [2024-11-12 08:29:21,322 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-12 08:29:21,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1043 events. 638/1043 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4669 event pairs, 172 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 1709. Up to 535 conditions per place. [2024-11-12 08:29:21,343 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-12 08:29:21,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 231 flow [2024-11-12 08:29:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:29:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:29:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-12 08:29:21,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-11-12 08:29:21,362 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 77 transitions. [2024-11-12 08:29:21,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 231 flow [2024-11-12 08:29:21,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:29:21,376 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 95 flow [2024-11-12 08:29:21,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-11-12 08:29:21,384 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-12 08:29:21,385 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 95 flow [2024-11-12 08:29:21,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:21,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:21,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:21,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:29:21,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:21,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1402878651, now seen corresponding path program 1 times [2024-11-12 08:29:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816102431] [2024-11-12 08:29:21,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816102431] [2024-11-12 08:29:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816102431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:29:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194889481] [2024-11-12 08:29:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:21,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:21,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-12 08:29:21,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:21,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:21,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-12 08:29:21,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:21,955 INFO L124 PetriNetUnfolderBase]: 1070/1919 cut-off events. [2024-11-12 08:29:21,956 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-11-12 08:29:21,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1919 events. 1070/1919 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10684 event pairs, 566 based on Foata normal form. 58/1855 useless extension candidates. Maximal degree in co-relation 1545. Up to 815 conditions per place. [2024-11-12 08:29:21,974 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-11-12 08:29:21,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 371 flow [2024-11-12 08:29:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-12 08:29:21,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-12 08:29:21,977 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 95 flow. Second operand 6 states and 136 transitions. [2024-11-12 08:29:21,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 371 flow [2024-11-12 08:29:21,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:29:21,981 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 196 flow [2024-11-12 08:29:21,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2024-11-12 08:29:21,983 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-12 08:29:21,984 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 196 flow [2024-11-12 08:29:21,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:21,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:21,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:21,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:29:21,985 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:21,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 680298853, now seen corresponding path program 1 times [2024-11-12 08:29:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891204652] [2024-11-12 08:29:21,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891204652] [2024-11-12 08:29:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891204652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885906875] [2024-11-12 08:29:22,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:22,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:22,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:22,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:29:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:22,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:29:22,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:22,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885906875] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-12 08:29:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707632694] [2024-11-12 08:29:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:22,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:22,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:22,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-12 08:29:22,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:22,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:22,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-12 08:29:22,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:22,907 INFO L124 PetriNetUnfolderBase]: 2124/3584 cut-off events. [2024-11-12 08:29:22,907 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-11-12 08:29:22,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3584 events. 2124/3584 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20538 event pairs, 780 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 3477. Up to 1155 conditions per place. [2024-11-12 08:29:22,938 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 85 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-11-12 08:29:22,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 556 flow [2024-11-12 08:29:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-12 08:29:22,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-11-12 08:29:22,940 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 196 flow. Second operand 6 states and 133 transitions. [2024-11-12 08:29:22,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 556 flow [2024-11-12 08:29:22,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:29:22,983 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 260 flow [2024-11-12 08:29:22,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2024-11-12 08:29:22,984 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-12 08:29:22,984 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 260 flow [2024-11-12 08:29:22,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:22,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:22,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:23,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:29:23,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:23,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:23,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1279354192, now seen corresponding path program 1 times [2024-11-12 08:29:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682189052] [2024-11-12 08:29:23,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682189052] [2024-11-12 08:29:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682189052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:29:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097398123] [2024-11-12 08:29:23,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:23,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:23,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-12 08:29:23,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:23,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:23,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-12 08:29:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:23,717 INFO L124 PetriNetUnfolderBase]: 1372/2233 cut-off events. [2024-11-12 08:29:23,717 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2024-11-12 08:29:23,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2233 events. 1372/2233 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10893 event pairs, 793 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 3741. Up to 1248 conditions per place. [2024-11-12 08:29:23,728 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 28 selfloop transitions, 6 changer transitions 37/78 dead transitions. [2024-11-12 08:29:23,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 458 flow [2024-11-12 08:29:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-12 08:29:23,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-11-12 08:29:23,730 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 260 flow. Second operand 6 states and 120 transitions. [2024-11-12 08:29:23,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 458 flow [2024-11-12 08:29:23,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:29:23,735 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 179 flow [2024-11-12 08:29:23,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-11-12 08:29:23,736 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-12 08:29:23,736 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 179 flow [2024-11-12 08:29:23,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:23,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:23,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:23,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:29:23,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:23,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash -463702353, now seen corresponding path program 1 times [2024-11-12 08:29:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:23,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147443063] [2024-11-12 08:29:23,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147443063] [2024-11-12 08:29:23,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147443063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:23,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076736765] [2024-11-12 08:29:23,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:23,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:23,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:23,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:29:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:23,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:29:23,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:23,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076736765] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-12 08:29:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700799185] [2024-11-12 08:29:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:24,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:24,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-12 08:29:24,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:24,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:24,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-12 08:29:24,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:24,256 INFO L124 PetriNetUnfolderBase]: 910/1560 cut-off events. [2024-11-12 08:29:24,256 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-11-12 08:29:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1560 events. 910/1560 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7687 event pairs, 290 based on Foata normal form. 72/1536 useless extension candidates. Maximal degree in co-relation 3901. Up to 647 conditions per place. [2024-11-12 08:29:24,269 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-12 08:29:24,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 321 flow [2024-11-12 08:29:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:29:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:29:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-12 08:29:24,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-11-12 08:29:24,271 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 179 flow. Second operand 5 states and 87 transitions. [2024-11-12 08:29:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 321 flow [2024-11-12 08:29:24,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 262 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-12 08:29:24,276 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2024-11-12 08:29:24,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-12 08:29:24,277 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2024-11-12 08:29:24,277 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2024-11-12 08:29:24,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:24,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:24,278 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:24,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:29:24,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:24,479 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:24,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash -327834966, now seen corresponding path program 1 times [2024-11-12 08:29:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:24,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318226640] [2024-11-12 08:29:24,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318226640] [2024-11-12 08:29:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318226640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807343740] [2024-11-12 08:29:24,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:24,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:24,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:24,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:24,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:29:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:24,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:29:24,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:24,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807343740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:24,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-12 08:29:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769864700] [2024-11-12 08:29:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:24,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:24,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-12 08:29:24,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:24,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:24,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-12 08:29:24,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:24,947 INFO L124 PetriNetUnfolderBase]: 686/1207 cut-off events. [2024-11-12 08:29:24,947 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-11-12 08:29:24,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1207 events. 686/1207 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5626 event pairs, 328 based on Foata normal form. 62/1200 useless extension candidates. Maximal degree in co-relation 2900. Up to 708 conditions per place. [2024-11-12 08:29:24,959 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-12 08:29:24,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 307 flow [2024-11-12 08:29:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:29:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:29:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-12 08:29:24,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-11-12 08:29:24,961 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 5 states and 94 transitions. [2024-11-12 08:29:24,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 307 flow [2024-11-12 08:29:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 08:29:24,965 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 170 flow [2024-11-12 08:29:24,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-12 08:29:24,967 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-11-12 08:29:24,967 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 170 flow [2024-11-12 08:29:24,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:24,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:24,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:24,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 08:29:25,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:25,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:29:25,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1503818552, now seen corresponding path program 1 times [2024-11-12 08:29:25,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:25,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029603197] [2024-11-12 08:29:25,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:25,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029603197] [2024-11-12 08:29:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029603197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481054344] [2024-11-12 08:29:26,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:26,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:26,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:29:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:26,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 08:29:26,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:26,929 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-11-12 08:29:26,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-11-12 08:29:28,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:29:28,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-11-12 08:29:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:34,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:10,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:30:10,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 83 [2024-11-12 08:30:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:30:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481054344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:11,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:11,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 26 [2024-11-12 08:30:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687213588] [2024-11-12 08:30:11,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:11,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 08:30:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 08:30:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=588, Unknown=4, NotChecked=0, Total=702 [2024-11-12 08:30:15,477 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] [2024-11-12 08:30:19,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:30:23,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:30:23,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-12 08:30:23,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 170 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:23,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:23,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-12 08:30:23,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:25,771 INFO L124 PetriNetUnfolderBase]: 2493/3878 cut-off events. [2024-11-12 08:30:25,772 INFO L125 PetriNetUnfolderBase]: For 3708/3724 co-relation queries the response was YES. [2024-11-12 08:30:25,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 3878 events. 2493/3878 cut-off events. For 3708/3724 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19130 event pairs, 72 based on Foata normal form. 1/3754 useless extension candidates. Maximal degree in co-relation 10595. Up to 1636 conditions per place. [2024-11-12 08:30:25,805 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 160 selfloop transitions, 47 changer transitions 1/212 dead transitions. [2024-11-12 08:30:25,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 212 transitions, 1207 flow [2024-11-12 08:30:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:30:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:30:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 323 transitions. [2024-11-12 08:30:25,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4601139601139601 [2024-11-12 08:30:25,808 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 170 flow. Second operand 18 states and 323 transitions. [2024-11-12 08:30:25,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 212 transitions, 1207 flow [2024-11-12 08:30:25,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 212 transitions, 1187 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 08:30:25,816 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 562 flow [2024-11-12 08:30:25,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=562, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2024-11-12 08:30:25,818 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-11-12 08:30:25,818 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 562 flow [2024-11-12 08:30:25,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:25,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:25,819 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:25,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:30:26,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:26,024 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:30:26,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash -100629604, now seen corresponding path program 2 times [2024-11-12 08:30:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:26,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820476282] [2024-11-12 08:30:26,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:30:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820476282] [2024-11-12 08:30:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820476282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68959779] [2024-11-12 08:30:27,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:27,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:27,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:27,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:30:27,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:27,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:27,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-12 08:30:27,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:27,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-12 08:30:27,656 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-12 08:30:27,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-12 08:30:27,771 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-12 08:30:27,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-12 08:30:28,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2024-11-12 08:30:28,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-11-12 08:30:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:30:28,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:29,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:30:29,070 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 316 treesize of output 296 [2024-11-12 08:30:29,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:30:29,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 120 [2024-11-12 08:30:37,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:30:37,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-12 08:30:38,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:30:38,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 78 [2024-11-12 08:30:39,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 47 treesize of output 39 [2024-11-12 08:30:40,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 97 treesize of output 81