./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-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:33:30,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:33:30,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:33:30,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:33:30,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:33:30,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:33:30,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:33:30,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:33:30,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:33:30,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:33:30,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:33:30,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:33:30,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:33:30,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:33:30,978 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:33:30,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:33:30,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:33:30,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:33:30,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:33:30,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:33:30,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:33:30,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:33:30,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:33:30,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:33:30,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:33:30,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:33:30,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:33:30,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:33:30,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:33:30,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:33:30,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:33:30,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:33:30,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:33:30,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:33:30,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:33:30,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:33:30,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:33:30,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:33:30,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:33:30,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:33:30,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:33:30,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:33:30,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2024-10-24 12:33:31,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:33:31,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:33:31,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:33:31,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:33:31,293 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:33:31,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-24 12:33:32,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:33:32,980 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:33:32,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-24 12:33:32,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc53e025/4d40d804de7649ac9895e3c99cb51bcf/FLAG59b016419 [2024-10-24 12:33:33,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc53e025/4d40d804de7649ac9895e3c99cb51bcf [2024-10-24 12:33:33,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:33:33,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:33:33,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:33:33,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:33:33,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:33:33,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603591c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33, skipping insertion in model container [2024-10-24 12:33:33,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:33:33,279 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-more-array-sum.wvr.c[2874,2887] [2024-10-24 12:33:33,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:33:33,312 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:33:33,340 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-more-array-sum.wvr.c[2874,2887] [2024-10-24 12:33:33,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:33:33,375 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:33:33,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33 WrapperNode [2024-10-24 12:33:33,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:33:33,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:33:33,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:33:33,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:33:33,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,437 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 276 [2024-10-24 12:33:33,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:33:33,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:33:33,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:33:33,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:33:33,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,475 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 12:33:33,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:33:33,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:33:33,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:33:33,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:33:33,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (1/1) ... [2024-10-24 12:33:33,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:33:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:33,541 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) [2024-10-24 12:33:33,545 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 [2024-10-24 12:33:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:33:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:33:33,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:33:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:33:33,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:33:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:33:33,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:33:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:33:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:33:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:33:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:33:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:33:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:33:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:33:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:33:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:33:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:33:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:33:33,606 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:33:33,751 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:33:33,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:33:34,196 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:33:34,196 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:33:34,675 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:33:34,675 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-24 12:33:34,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:33:34 BoogieIcfgContainer [2024-10-24 12:33:34,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:33:34,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:33:34,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:33:34,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:33:34,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:33:33" (1/3) ... [2024-10-24 12:33:34,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0fb7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:33:34, skipping insertion in model container [2024-10-24 12:33:34,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:33:33" (2/3) ... [2024-10-24 12:33:34,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0fb7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:33:34, skipping insertion in model container [2024-10-24 12:33:34,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:33:34" (3/3) ... [2024-10-24 12:33:34,687 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-10-24 12:33:34,706 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:33:34,706 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:33:34,706 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:33:34,777 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:33:34,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 97 flow [2024-10-24 12:33:34,853 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-10-24 12:33:34,853 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:33:34,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 5/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-24 12:33:34,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 38 transitions, 97 flow [2024-10-24 12:33:34,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 34 transitions, 86 flow [2024-10-24 12:33:34,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:33:34,875 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;@32a87e1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:33:34,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:33:34,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:33:34,894 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2024-10-24 12:33:34,894 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:33:34,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:34,900 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] [2024-10-24 12:33:34,900 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)] === [2024-10-24 12:33:34,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash -884405966, now seen corresponding path program 1 times [2024-10-24 12:33:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026387784] [2024-10-24 12:33:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:35,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:35,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026387784] [2024-10-24 12:33:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026387784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:33:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822314887] [2024-10-24 12:33:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:35,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:33:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:33:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:33:35,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-10-24 12:33:35,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-24 12:33:35,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:35,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-10-24 12:33:35,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:35,808 INFO L124 PetriNetUnfolderBase]: 1210/1814 cut-off events. [2024-10-24 12:33:35,809 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-24 12:33:35,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 1814 events. 1210/1814 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8454 event pairs, 308 based on Foata normal form. 1/1791 useless extension candidates. Maximal degree in co-relation 3347. Up to 1239 conditions per place. [2024-10-24 12:33:35,830 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 45 selfloop transitions, 4 changer transitions 1/54 dead transitions. [2024-10-24 12:33:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 241 flow [2024-10-24 12:33:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:33:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:33:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-24 12:33:35,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-10-24 12:33:35,845 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 86 flow. Second operand 3 states and 72 transitions. [2024-10-24 12:33:35,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 241 flow [2024-10-24 12:33:35,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 219 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:33:35,858 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 100 flow [2024-10-24 12:33:35,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2024-10-24 12:33:35,865 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2024-10-24 12:33:35,866 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 100 flow [2024-10-24 12:33:35,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-24 12:33:35,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:35,866 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] [2024-10-24 12:33:35,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:33:35,867 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)] === [2024-10-24 12:33:35,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1938401803, now seen corresponding path program 1 times [2024-10-24 12:33:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681521845] [2024-10-24 12:33:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:33:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681521845] [2024-10-24 12:33:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681521845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:33:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024704387] [2024-10-24 12:33:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:36,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:33:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:33:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:33:36,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-24 12:33:36,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-24 12:33:36,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:36,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-24 12:33:36,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:36,369 INFO L124 PetriNetUnfolderBase]: 947/1493 cut-off events. [2024-10-24 12:33:36,370 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-24 12:33:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 1493 events. 947/1493 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7224 event pairs, 693 based on Foata normal form. 1/1396 useless extension candidates. Maximal degree in co-relation 1449. Up to 1358 conditions per place. [2024-10-24 12:33:36,382 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 25 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2024-10-24 12:33:36,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 166 flow [2024-10-24 12:33:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:33:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:33:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-24 12:33:36,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-10-24 12:33:36,384 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 100 flow. Second operand 4 states and 73 transitions. [2024-10-24 12:33:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 166 flow [2024-10-24 12:33:36,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:33:36,386 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 122 flow [2024-10-24 12:33:36,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-10-24 12:33:36,388 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-24 12:33:36,388 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 122 flow [2024-10-24 12:33:36,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-24 12:33:36,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:36,389 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] [2024-10-24 12:33:36,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:33:36,390 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)] === [2024-10-24 12:33:36,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 242246815, now seen corresponding path program 1 times [2024-10-24 12:33:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996364297] [2024-10-24 12:33:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 12:33:36,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996364297] [2024-10-24 12:33:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996364297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:33:36,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:33:36,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:33:36,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400132131] [2024-10-24 12:33:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:36,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:33:36,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:33:36,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:33:36,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-10-24 12:33:36,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 12:33:36,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:36,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-10-24 12:33:36,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:36,739 INFO L124 PetriNetUnfolderBase]: 1150/1759 cut-off events. [2024-10-24 12:33:36,740 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-24 12:33:36,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1759 events. 1150/1759 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8545 event pairs, 377 based on Foata normal form. 0/1675 useless extension candidates. Maximal degree in co-relation 3543. Up to 876 conditions per place. [2024-10-24 12:33:36,751 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 38 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-10-24 12:33:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 232 flow [2024-10-24 12:33:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:33:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:33:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-24 12:33:36,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-24 12:33:36,754 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 122 flow. Second operand 4 states and 77 transitions. [2024-10-24 12:33:36,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 232 flow [2024-10-24 12:33:36,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 222 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 12:33:36,757 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 133 flow [2024-10-24 12:33:36,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-24 12:33:36,759 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-10-24 12:33:36,759 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 133 flow [2024-10-24 12:33:36,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 12:33:36,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:36,760 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] [2024-10-24 12:33:36,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:33:36,760 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)] === [2024-10-24 12:33:36,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 153836235, now seen corresponding path program 1 times [2024-10-24 12:33:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778179400] [2024-10-24 12:33:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:33:36,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778179400] [2024-10-24 12:33:36,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778179400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611444057] [2024-10-24 12:33:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:36,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:36,917 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) [2024-10-24 12:33:36,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:33:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:37,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:37,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:33:37,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:33:37,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611444057] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:37,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:33:37,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-10-24 12:33:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900734709] [2024-10-24 12:33:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:33:37,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:33:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:37,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:33:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:33:37,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-10-24 12:33:37,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 133 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) [2024-10-24 12:33:37,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:37,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-10-24 12:33:37,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:37,496 INFO L124 PetriNetUnfolderBase]: 1172/1857 cut-off events. [2024-10-24 12:33:37,497 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-10-24 12:33:37,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 1857 events. 1172/1857 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8954 event pairs, 392 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 4194. Up to 937 conditions per place. [2024-10-24 12:33:37,515 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-10-24 12:33:37,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 261 flow [2024-10-24 12:33:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:33:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:33:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-10-24 12:33:37,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-10-24 12:33:37,518 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 133 flow. Second operand 5 states and 89 transitions. [2024-10-24 12:33:37,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 261 flow [2024-10-24 12:33:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:33:37,524 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-10-24 12:33:37,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-10-24 12:33:37,526 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-10-24 12:33:37,527 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-10-24 12:33:37,527 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) [2024-10-24 12:33:37,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:37,527 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] [2024-10-24 12:33:37,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:33:37,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:37,732 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)] === [2024-10-24 12:33:37,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1333444636, now seen corresponding path program 1 times [2024-10-24 12:33:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989834602] [2024-10-24 12:33:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989834602] [2024-10-24 12:33:39,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989834602] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179304670] [2024-10-24 12:33:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:39,174 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) [2024-10-24 12:33:39,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:33:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:39,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-24 12:33:39,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:39,328 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 [2024-10-24 12:33:39,376 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 15 treesize of output 1 [2024-10-24 12:33:39,446 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 12:33:39,447 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 11 treesize of output 11 [2024-10-24 12:33:39,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 12:33:39,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-24 12:33:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:33:39,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:50,772 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-10-24 12:33:50,773 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 3222 treesize of output 2312 [2024-10-24 12:33:50,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:33:50,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 871 treesize of output 809 [2024-10-24 12:34:05,883 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 39 treesize of output 35 [2024-10-24 12:34:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179304670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:34:09,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:34:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2024-10-24 12:34:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960820521] [2024-10-24 12:34:09,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:34:09,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-24 12:34:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:34:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-24 12:34:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=935, Unknown=3, NotChecked=0, Total=1056 [2024-10-24 12:34:14,220 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] [2024-10-24 12:34:18,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 12:34:18,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 38 [2024-10-24 12:34:18,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:34:18,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:34:18,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 38 [2024-10-24 12:34:18,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:34:24,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 12:34:27,771 INFO L124 PetriNetUnfolderBase]: 6128/8693 cut-off events. [2024-10-24 12:34:27,772 INFO L125 PetriNetUnfolderBase]: For 4339/4339 co-relation queries the response was YES. [2024-10-24 12:34:27,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22924 conditions, 8693 events. 6128/8693 cut-off events. For 4339/4339 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 41354 event pairs, 928 based on Foata normal form. 1/8226 useless extension candidates. Maximal degree in co-relation 15734. Up to 3460 conditions per place. [2024-10-24 12:34:27,827 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 255 selfloop transitions, 91 changer transitions 1/348 dead transitions. [2024-10-24 12:34:27,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 348 transitions, 1802 flow [2024-10-24 12:34:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 12:34:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-24 12:34:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 469 transitions. [2024-10-24 12:34:27,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38569078947368424 [2024-10-24 12:34:27,831 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 32 states and 469 transitions. [2024-10-24 12:34:27,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 348 transitions, 1802 flow [2024-10-24 12:34:27,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 348 transitions, 1772 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:34:27,848 INFO L231 Difference]: Finished difference. Result has 88 places, 130 transitions, 811 flow [2024-10-24 12:34:27,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=811, PETRI_PLACES=88, PETRI_TRANSITIONS=130} [2024-10-24 12:34:27,849 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2024-10-24 12:34:27,849 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 130 transitions, 811 flow [2024-10-24 12:34:27,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 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) [2024-10-24 12:34:27,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:34:27,850 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] [2024-10-24 12:34:27,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:34:28,053 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 [2024-10-24 12:34:28,054 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)] === [2024-10-24 12:34:28,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:34:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1854216508, now seen corresponding path program 2 times [2024-10-24 12:34:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:34:28,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284634610] [2024-10-24 12:34:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:34:28,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:34:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:34:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:34:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284634610] [2024-10-24 12:34:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284634610] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:34:29,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116157606] [2024-10-24 12:34:29,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:34:29,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:34:29,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:34:29,243 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) [2024-10-24 12:34:29,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:34:29,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:34:29,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:34:29,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-24 12:34:29,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:34:29,486 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 15 treesize of output 1 [2024-10-24 12:34:29,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:29,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-24 12:34:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:29,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:34:30,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:30,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-10-24 12:34:30,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:30,543 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 283 treesize of output 243 [2024-10-24 12:34:30,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:30,569 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 166 treesize of output 130 [2024-10-24 12:34:30,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:30,692 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 300 treesize of output 260 [2024-10-24 12:34:30,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:30,706 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 252 treesize of output 196 [2024-10-24 12:34:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,881 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 178 [2024-10-24 12:34:30,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,888 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 110 [2024-10-24 12:34:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,922 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 143 [2024-10-24 12:34:30,927 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,936 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 162 [2024-10-24 12:34:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,944 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 110 [2024-10-24 12:34:30,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:30,998 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 369 treesize of output 295 [2024-10-24 12:34:31,012 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:31,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,019 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 211 [2024-10-24 12:34:31,026 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:31,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,032 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2024-10-24 12:34:31,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,039 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 50 [2024-10-24 12:34:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,069 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-24 12:34:31,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 1 [2024-10-24 12:34:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,077 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2024-10-24 12:34:31,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,104 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 369 treesize of output 1 [2024-10-24 12:34:31,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,130 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 198 treesize of output 1 [2024-10-24 12:34:31,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,149 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 1 [2024-10-24 12:34:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,171 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 283 treesize of output 1 [2024-10-24 12:34:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,196 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 300 treesize of output 1 [2024-10-24 12:34:31,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,222 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 1 [2024-10-24 12:34:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,243 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 1 [2024-10-24 12:34:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,269 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 181 treesize of output 1 [2024-10-24 12:34:31,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,289 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 267 treesize of output 1 [2024-10-24 12:34:31,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:31,306 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:31,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 1 [2024-10-24 12:34:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:31,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116157606] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:34:31,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:34:31,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2024-10-24 12:34:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935611402] [2024-10-24 12:34:31,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:34:31,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-24 12:34:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:34:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-24 12:34:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 12:34:31,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-24 12:34:31,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 130 transitions, 811 flow. Second operand has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 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) [2024-10-24 12:34:31,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:34:31,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-24 12:34:31,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:34:34,960 INFO L124 PetriNetUnfolderBase]: 6586/9714 cut-off events. [2024-10-24 12:34:34,960 INFO L125 PetriNetUnfolderBase]: For 14354/14354 co-relation queries the response was YES. [2024-10-24 12:34:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32408 conditions, 9714 events. 6586/9714 cut-off events. For 14354/14354 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 55800 event pairs, 367 based on Foata normal form. 2/9715 useless extension candidates. Maximal degree in co-relation 18947. Up to 4266 conditions per place. [2024-10-24 12:34:35,017 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 302 selfloop transitions, 138 changer transitions 2/446 dead transitions. [2024-10-24 12:34:35,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 446 transitions, 3021 flow [2024-10-24 12:34:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-24 12:34:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-24 12:34:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 558 transitions. [2024-10-24 12:34:35,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-10-24 12:34:35,024 INFO L175 Difference]: Start difference. First operand has 88 places, 130 transitions, 811 flow. Second operand 33 states and 558 transitions. [2024-10-24 12:34:35,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 446 transitions, 3021 flow [2024-10-24 12:34:35,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 446 transitions, 2843 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-10-24 12:34:35,086 INFO L231 Difference]: Finished difference. Result has 128 places, 212 transitions, 1570 flow [2024-10-24 12:34:35,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1570, PETRI_PLACES=128, PETRI_TRANSITIONS=212} [2024-10-24 12:34:35,088 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2024-10-24 12:34:35,088 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 212 transitions, 1570 flow [2024-10-24 12:34:35,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 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) [2024-10-24 12:34:35,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:34:35,090 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] [2024-10-24 12:34:35,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:34:35,293 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 [2024-10-24 12:34:35,294 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)] === [2024-10-24 12:34:35,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:34:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1468830360, now seen corresponding path program 3 times [2024-10-24 12:34:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:34:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685656325] [2024-10-24 12:34:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:34:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:34:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:34:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:36,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:34:36,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685656325] [2024-10-24 12:34:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685656325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:34:36,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750796971] [2024-10-24 12:34:36,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:34:36,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:34:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:34:36,217 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) [2024-10-24 12:34:36,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:34:36,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 12:34:36,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:34:36,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 12:34:36,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:34:36,459 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 15 treesize of output 1 [2024-10-24 12:34:36,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:36,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-24 12:34:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:36,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:34:37,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:37,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-10-24 12:34:37,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:37,250 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 214 treesize of output 190 [2024-10-24 12:34:37,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:37,262 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 182 treesize of output 134 [2024-10-24 12:34:37,376 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 12:34:37,376 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 300 treesize of output 255 [2024-10-24 12:34:37,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 12:34:37,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 188 [2024-10-24 12:34:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,422 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 227 [2024-10-24 12:34:37,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,432 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 110 [2024-10-24 12:34:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,462 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2024-10-24 12:34:37,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,473 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 50 [2024-10-24 12:34:37,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,511 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 369 treesize of output 295 [2024-10-24 12:34:37,521 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:37,526 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 12:34:37,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 12:34:37,532 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:37,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,551 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-24 12:34:37,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 1 [2024-10-24 12:34:37,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,564 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2024-10-24 12:34:37,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,601 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 178 [2024-10-24 12:34:37,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,610 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 110 [2024-10-24 12:34:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 94 [2024-10-24 12:34:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 50 [2024-10-24 12:34:37,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,692 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 162 [2024-10-24 12:34:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,701 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 110 [2024-10-24 12:34:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:34:37,747 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:34:37,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 1 [2024-10-24 12:34:37,752 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 12:34:37,753 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 12:34:37,755 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-24 12:34:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:37,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750796971] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:34:37,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:34:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2024-10-24 12:34:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335894195] [2024-10-24 12:34:37,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:34:37,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 12:34:37,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:34:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 12:34:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 12:34:38,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-24 12:34:38,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 212 transitions, 1570 flow. Second operand has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 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) [2024-10-24 12:34:38,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:34:38,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-24 12:34:38,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:34:42,020 INFO L124 PetriNetUnfolderBase]: 8411/12676 cut-off events. [2024-10-24 12:34:42,020 INFO L125 PetriNetUnfolderBase]: For 47175/47175 co-relation queries the response was YES. [2024-10-24 12:34:42,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49303 conditions, 12676 events. 8411/12676 cut-off events. For 47175/47175 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 76781 event pairs, 1512 based on Foata normal form. 2/12036 useless extension candidates. Maximal degree in co-relation 47329. Up to 8563 conditions per place. [2024-10-24 12:34:42,109 INFO L140 encePairwiseOnDemand]: 20/38 looper letters, 372 selfloop transitions, 138 changer transitions 2/517 dead transitions. [2024-10-24 12:34:42,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 517 transitions, 4053 flow [2024-10-24 12:34:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-24 12:34:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-10-24 12:34:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 601 transitions. [2024-10-24 12:34:42,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39539473684210524 [2024-10-24 12:34:42,112 INFO L175 Difference]: Start difference. First operand has 128 places, 212 transitions, 1570 flow. Second operand 40 states and 601 transitions. [2024-10-24 12:34:42,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 517 transitions, 4053 flow [2024-10-24 12:34:42,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 517 transitions, 3861 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-10-24 12:34:42,271 INFO L231 Difference]: Finished difference. Result has 185 places, 305 transitions, 2650 flow [2024-10-24 12:34:42,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2650, PETRI_PLACES=185, PETRI_TRANSITIONS=305} [2024-10-24 12:34:42,272 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-10-24 12:34:42,272 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 305 transitions, 2650 flow [2024-10-24 12:34:42,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 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) [2024-10-24 12:34:42,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:34:42,272 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] [2024-10-24 12:34:42,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:34:42,473 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 [2024-10-24 12:34:42,473 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)] === [2024-10-24 12:34:42,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:34:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash 337402522, now seen corresponding path program 4 times [2024-10-24 12:34:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:34:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845016050] [2024-10-24 12:34:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:34:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:34:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:34:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:43,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:34:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845016050] [2024-10-24 12:34:43,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845016050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:34:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709493563] [2024-10-24 12:34:43,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:34:43,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:34:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:34:43,667 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) [2024-10-24 12:34:43,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:34:43,769 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:34:43,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:34:43,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 12:34:43,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:34:43,904 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 15 treesize of output 1 [2024-10-24 12:34:44,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:44,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-24 12:34:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:44,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:34:44,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:44,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-10-24 12:34:44,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:44,807 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 369 treesize of output 313 [2024-10-24 12:34:44,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:44,824 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 236 treesize of output 192 [2024-10-24 12:34:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709493563] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:34:45,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:34:45,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2024-10-24 12:34:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108165942] [2024-10-24 12:34:45,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:34:45,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 12:34:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:34:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 12:34:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 12:34:45,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-24 12:34:45,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 305 transitions, 2650 flow. Second operand has 34 states, 34 states have (on average 8.088235294117647) internal successors, (275), 34 states have internal predecessors, (275), 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) [2024-10-24 12:34:45,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:34:45,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-24 12:34:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:34:50,591 INFO L124 PetriNetUnfolderBase]: 11110/16342 cut-off events. [2024-10-24 12:34:50,592 INFO L125 PetriNetUnfolderBase]: For 126591/131624 co-relation queries the response was YES. [2024-10-24 12:34:50,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82312 conditions, 16342 events. 11110/16342 cut-off events. For 126591/131624 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 100190 event pairs, 1679 based on Foata normal form. 3/16229 useless extension candidates. Maximal degree in co-relation 79963. Up to 11086 conditions per place. [2024-10-24 12:34:50,774 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 467 selfloop transitions, 212 changer transitions 3/686 dead transitions. [2024-10-24 12:34:50,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 686 transitions, 7072 flow [2024-10-24 12:34:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-24 12:34:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-24 12:34:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 685 transitions. [2024-10-24 12:34:50,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.409688995215311 [2024-10-24 12:34:50,779 INFO L175 Difference]: Start difference. First operand has 185 places, 305 transitions, 2650 flow. Second operand 44 states and 685 transitions. [2024-10-24 12:34:50,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 686 transitions, 7072 flow [2024-10-24 12:34:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 686 transitions, 6757 flow, removed 143 selfloop flow, removed 8 redundant places. [2024-10-24 12:34:51,287 INFO L231 Difference]: Finished difference. Result has 232 places, 417 transitions, 4380 flow [2024-10-24 12:34:51,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4380, PETRI_PLACES=232, PETRI_TRANSITIONS=417} [2024-10-24 12:34:51,288 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 193 predicate places. [2024-10-24 12:34:51,288 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 417 transitions, 4380 flow [2024-10-24 12:34:51,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.088235294117647) internal successors, (275), 34 states have internal predecessors, (275), 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) [2024-10-24 12:34:51,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:34:51,288 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] [2024-10-24 12:34:51,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 12:34:51,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:34:51,489 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)] === [2024-10-24 12:34:51,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:34:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash -689957486, now seen corresponding path program 5 times [2024-10-24 12:34:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:34:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719819759] [2024-10-24 12:34:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:34:51,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:34:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:34:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:34:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:34:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719819759] [2024-10-24 12:34:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719819759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:34:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606177649] [2024-10-24 12:34:52,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:34:52,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:34:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:34:52,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:34:52,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:34:52,411 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 12:34:52,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:34:52,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-24 12:34:52,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:34:52,492 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 15 treesize of output 1 [2024-10-24 12:34:52,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:34:52,987 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 33 treesize of output 81 [2024-10-24 12:34:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:34:53,124 INFO L311 TraceCheckSpWp]: Computing backward predicates...