./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:34:24,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:34:24,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:34:24,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:34:24,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:34:24,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:34:24,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:34:24,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:34:24,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:34:24,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:34:24,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:34:24,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:34:24,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:34:24,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:34:24,892 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:34:24,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:34:24,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:34:24,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:34:24,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:34:24,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:34:24,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:34:24,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:34:24,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:34:24,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:34:24,898 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:34:24,898 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:34:24,898 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:34:24,898 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:34:24,899 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:34:24,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:34:24,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:34:24,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:34:24,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:34:24,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:34:24,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:34:24,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:34:24,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:34:24,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:34:24,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:34:24,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:34:24,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:34:24,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:34:24,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-10 10:34:25,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:34:25,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:34:25,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:34:25,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:34:25,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:34:25,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-10 10:34:26,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:34:26,906 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:34:26,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-10 10:34:26,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19fb435d/fb3048a71c934957b0cde47d75fec44f/FLAG4052b4c7d [2024-11-10 10:34:26,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19fb435d/fb3048a71c934957b0cde47d75fec44f [2024-11-10 10:34:26,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:34:26,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:34:26,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:34:26,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:34:26,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:34:26,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:26" (1/1) ... [2024-11-10 10:34:26,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409f8c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:26, skipping insertion in model container [2024-11-10 10:34:26,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:26" (1/1) ... [2024-11-10 10:34:26,961 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:34:27,181 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-10 10:34:27,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:34:27,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:34:27,269 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-10 10:34:27,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:34:27,301 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:34:27,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27 WrapperNode [2024-11-10 10:34:27,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:34:27,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:34:27,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:34:27,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:34:27,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,363 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 168 [2024-11-10 10:34:27,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:34:27,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:34:27,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:34:27,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:34:27,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,393 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 10:34:27,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,400 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:34:27,410 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:34:27,411 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:34:27,411 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:34:27,416 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (1/1) ... [2024-11-10 10:34:27,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:34:27,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:27,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:34:27,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:34:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:34:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:34:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:34:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:34:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:34:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:34:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:34:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:34:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:34:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:34:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:34:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:34:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:34:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:34:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:34:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:34:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:34:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:34:27,522 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:34:27,640 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:34:27,643 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:34:27,974 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:34:27,975 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:34:28,273 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:34:28,274 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:34:28,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:28 BoogieIcfgContainer [2024-11-10 10:34:28,275 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:34:28,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:34:28,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:34:28,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:34:28,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:34:26" (1/3) ... [2024-11-10 10:34:28,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1033260e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:34:28, skipping insertion in model container [2024-11-10 10:34:28,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:27" (2/3) ... [2024-11-10 10:34:28,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1033260e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:34:28, skipping insertion in model container [2024-11-10 10:34:28,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:28" (3/3) ... [2024-11-10 10:34:28,286 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-10 10:34:28,305 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:34:28,306 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:34:28,307 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:34:28,377 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:34:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 109 flow [2024-11-10 10:34:28,455 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-11-10 10:34:28,455 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:34:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 6/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-10 10:34:28,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 109 flow [2024-11-10 10:34:28,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 40 transitions, 98 flow [2024-11-10 10:34:28,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:34:28,480 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;@756d49c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:34:28,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:34:28,494 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:34:28,494 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-11-10 10:34:28,494 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:34:28,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:28,495 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] [2024-11-10 10:34:28,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:28,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -231725801, now seen corresponding path program 1 times [2024-11-10 10:34:28,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670783348] [2024-11-10 10:34:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:28,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670783348] [2024-11-10 10:34:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670783348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:28,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:28,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:34:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297367751] [2024-11-10 10:34:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:28,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:34:28,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:34:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:34:28,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:34:28,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:28,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:28,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:34:28,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:29,043 INFO L124 PetriNetUnfolderBase]: 464/735 cut-off events. [2024-11-10 10:34:29,051 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-10 10:34:29,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 735 events. 464/735 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3461 event pairs, 378 based on Foata normal form. 86/769 useless extension candidates. Maximal degree in co-relation 1386. Up to 697 conditions per place. [2024-11-10 10:34:29,071 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 25 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-10 10:34:29,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 142 flow [2024-11-10 10:34:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:34:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:34:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-11-10 10:34:29,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-10 10:34:29,092 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 98 flow. Second operand 2 states and 58 transitions. [2024-11-10 10:34:29,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 142 flow [2024-11-10 10:34:29,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:34:29,104 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 80 flow [2024-11-10 10:34:29,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-10 10:34:29,110 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-10 10:34:29,111 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 80 flow [2024-11-10 10:34:29,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:29,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:29,113 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] [2024-11-10 10:34:29,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:34:29,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:29,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2144098270, now seen corresponding path program 1 times [2024-11-10 10:34:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:29,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067215168] [2024-11-10 10:34:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067215168] [2024-11-10 10:34:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067215168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:29,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:29,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:34:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138203706] [2024-11-10 10:34:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:29,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:34:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:34:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:34:29,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-10 10:34:29,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:29,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:29,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-10 10:34:29,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:29,755 INFO L124 PetriNetUnfolderBase]: 534/876 cut-off events. [2024-11-10 10:34:29,755 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:34:29,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 876 events. 534/876 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4253 event pairs, 422 based on Foata normal form. 22/861 useless extension candidates. Maximal degree in co-relation 1732. Up to 698 conditions per place. [2024-11-10 10:34:29,784 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 25 selfloop transitions, 2 changer transitions 14/52 dead transitions. [2024-11-10 10:34:29,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 195 flow [2024-11-10 10:34:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:34:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:34:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-10 10:34:29,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-10 10:34:29,789 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 80 flow. Second operand 5 states and 114 transitions. [2024-11-10 10:34:29,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 195 flow [2024-11-10 10:34:29,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 195 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:34:29,792 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 100 flow [2024-11-10 10:34:29,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-11-10 10:34:29,794 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-11-10 10:34:29,795 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 100 flow [2024-11-10 10:34:29,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:29,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:29,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:29,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:34:29,798 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:29,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash 565912803, now seen corresponding path program 1 times [2024-11-10 10:34:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:29,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922216915] [2024-11-10 10:34:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:29,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:30,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922216915] [2024-11-10 10:34:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922216915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:30,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996195570] [2024-11-10 10:34:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:30,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:30,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:30,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:30,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:34:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:30,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:30,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:30,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996195570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:30,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:30,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 10:34:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40452546] [2024-11-10 10:34:30,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:30,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:34:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:34:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:34:30,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-10 10:34:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 100 flow. Second operand has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-10 10:34:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:30,875 INFO L124 PetriNetUnfolderBase]: 625/1024 cut-off events. [2024-11-10 10:34:30,875 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-10 10:34:30,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1024 events. 625/1024 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5158 event pairs, 422 based on Foata normal form. 53/1027 useless extension candidates. Maximal degree in co-relation 2217. Up to 698 conditions per place. [2024-11-10 10:34:30,883 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 25 selfloop transitions, 3 changer transitions 30/69 dead transitions. [2024-11-10 10:34:30,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 294 flow [2024-11-10 10:34:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:34:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:34:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-11-10 10:34:30,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-11-10 10:34:30,889 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 100 flow. Second operand 7 states and 160 transitions. [2024-11-10 10:34:30,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 294 flow [2024-11-10 10:34:30,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 288 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:30,892 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 126 flow [2024-11-10 10:34:30,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-11-10 10:34:30,893 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-11-10 10:34:30,894 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 126 flow [2024-11-10 10:34:30,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:30,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:30,894 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:30,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 10:34:31,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:31,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:31,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 53134504, now seen corresponding path program 2 times [2024-11-10 10:34:31,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:31,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670514730] [2024-11-10 10:34:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:31,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:33,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670514730] [2024-11-10 10:34:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670514730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572432633] [2024-11-10 10:34:33,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:34:33,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:33,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:33,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:33,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:34:33,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:34:33,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:33,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:34:33,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:34:33,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:34:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572432633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:33,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:34:33,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2024-11-10 10:34:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039169339] [2024-11-10 10:34:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:33,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:34:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:34:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:34:33,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:34:33,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:33,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:33,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:34:33,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:33,776 INFO L124 PetriNetUnfolderBase]: 500/949 cut-off events. [2024-11-10 10:34:33,777 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2024-11-10 10:34:33,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 949 events. 500/949 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4854 event pairs, 92 based on Foata normal form. 36/925 useless extension candidates. Maximal degree in co-relation 2242. Up to 445 conditions per place. [2024-11-10 10:34:33,783 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 58 selfloop transitions, 10 changer transitions 16/96 dead transitions. [2024-11-10 10:34:33,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 465 flow [2024-11-10 10:34:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:34:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:34:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-11-10 10:34:33,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880681818181818 [2024-11-10 10:34:33,788 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 126 flow. Second operand 8 states and 207 transitions. [2024-11-10 10:34:33,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 465 flow [2024-11-10 10:34:33,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 417 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-11-10 10:34:33,793 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 193 flow [2024-11-10 10:34:33,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-10 10:34:33,795 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-11-10 10:34:33,795 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 193 flow [2024-11-10 10:34:33,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:33,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:33,796 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:33,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 10:34:34,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 10:34:34,001 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:34,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:34,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1431560990, now seen corresponding path program 3 times [2024-11-10 10:34:34,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:34,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063217506] [2024-11-10 10:34:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063217506] [2024-11-10 10:34:36,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063217506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260670135] [2024-11-10 10:34:36,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:34:36,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:36,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:36,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:36,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:34:36,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:34:36,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:36,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:34:36,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:34:36,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:34:36,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260670135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:34:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2024-11-10 10:34:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357692360] [2024-11-10 10:34:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:36,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:34:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:34:36,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:34:36,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:34:36,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 193 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:36,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:36,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:34:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:36,947 INFO L124 PetriNetUnfolderBase]: 616/1198 cut-off events. [2024-11-10 10:34:36,948 INFO L125 PetriNetUnfolderBase]: For 1420/1440 co-relation queries the response was YES. [2024-11-10 10:34:36,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1198 events. 616/1198 cut-off events. For 1420/1440 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6738 event pairs, 138 based on Foata normal form. 21/1148 useless extension candidates. Maximal degree in co-relation 3185. Up to 570 conditions per place. [2024-11-10 10:34:36,961 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 58 selfloop transitions, 18 changer transitions 16/104 dead transitions. [2024-11-10 10:34:36,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 584 flow [2024-11-10 10:34:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:34:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:34:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-11-10 10:34:36,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767045454545454 [2024-11-10 10:34:36,963 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 193 flow. Second operand 8 states and 203 transitions. [2024-11-10 10:34:36,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 584 flow [2024-11-10 10:34:36,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 554 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:36,972 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 332 flow [2024-11-10 10:34:36,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-11-10 10:34:36,973 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-11-10 10:34:36,973 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 332 flow [2024-11-10 10:34:36,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:36,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:36,974 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:36,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:34:37,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:37,176 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:37,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash -110540072, now seen corresponding path program 4 times [2024-11-10 10:34:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267792704] [2024-11-10 10:34:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267792704] [2024-11-10 10:34:39,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267792704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53687637] [2024-11-10 10:34:39,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:34:39,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:39,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:39,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:39,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:34:39,339 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:34:39,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:39,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 10:34:39,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:39,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 10:34:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:39,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:40,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2024-11-10 10:34:40,995 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-10 10:34:40,995 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 129 [2024-11-10 10:34:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53687637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:41,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:41,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 33 [2024-11-10 10:34:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624250184] [2024-11-10 10:34:41,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:41,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 10:34:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 10:34:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 10:34:41,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-10 10:34:41,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 332 flow. Second operand has 34 states, 34 states have (on average 16.029411764705884) internal successors, (545), 34 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:41,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:41,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-10 10:34:41,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:46,258 INFO L124 PetriNetUnfolderBase]: 1966/4065 cut-off events. [2024-11-10 10:34:46,258 INFO L125 PetriNetUnfolderBase]: For 6918/7101 co-relation queries the response was YES. [2024-11-10 10:34:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 4065 events. 1966/4065 cut-off events. For 6918/7101 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30527 event pairs, 418 based on Foata normal form. 58/3797 useless extension candidates. Maximal degree in co-relation 11543. Up to 1025 conditions per place. [2024-11-10 10:34:46,294 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 211 selfloop transitions, 76 changer transitions 42/340 dead transitions. [2024-11-10 10:34:46,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 340 transitions, 2240 flow [2024-11-10 10:34:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-10 10:34:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-10 10:34:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 786 transitions. [2024-11-10 10:34:46,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2024-11-10 10:34:46,299 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 332 flow. Second operand 36 states and 786 transitions. [2024-11-10 10:34:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 340 transitions, 2240 flow [2024-11-10 10:34:46,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 340 transitions, 2156 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:46,348 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1168 flow [2024-11-10 10:34:46,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1168, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2024-11-10 10:34:46,350 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2024-11-10 10:34:46,351 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1168 flow [2024-11-10 10:34:46,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.029411764705884) internal successors, (545), 34 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:46,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:46,352 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:46,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:34:46,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:46,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:46,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1843725966, now seen corresponding path program 5 times [2024-11-10 10:34:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661791006] [2024-11-10 10:34:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:48,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661791006] [2024-11-10 10:34:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661791006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139678110] [2024-11-10 10:34:48,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:34:48,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:48,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:48,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:34:48,499 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 10:34:48,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:48,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 10:34:48,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:48,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 10:34:49,019 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-10 10:34:49,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 34 [2024-11-10 10:34:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:49,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:49,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-11-10 10:34:50,001 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-10 10:34:50,002 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 138 [2024-11-10 10:34:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139678110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:51,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 31 [2024-11-10 10:34:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891736729] [2024-11-10 10:34:51,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:51,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 10:34:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 10:34:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2024-11-10 10:34:51,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-10 10:34:51,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1168 flow. Second operand has 32 states, 32 states have (on average 16.15625) internal successors, (517), 32 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:51,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:51,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-10 10:34:51,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:56,288 INFO L124 PetriNetUnfolderBase]: 2335/4893 cut-off events. [2024-11-10 10:34:56,288 INFO L125 PetriNetUnfolderBase]: For 16489/16666 co-relation queries the response was YES. [2024-11-10 10:34:56,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16149 conditions, 4893 events. 2335/4893 cut-off events. For 16489/16666 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37499 event pairs, 615 based on Foata normal form. 41/4564 useless extension candidates. Maximal degree in co-relation 16114. Up to 1290 conditions per place. [2024-11-10 10:34:56,326 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 209 selfloop transitions, 49 changer transitions 16/285 dead transitions. [2024-11-10 10:34:56,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 285 transitions, 2388 flow [2024-11-10 10:34:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:34:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:34:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 506 transitions. [2024-11-10 10:34:56,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-10 10:34:56,329 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1168 flow. Second operand 22 states and 506 transitions. [2024-11-10 10:34:56,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 285 transitions, 2388 flow [2024-11-10 10:34:56,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 285 transitions, 2160 flow, removed 110 selfloop flow, removed 10 redundant places. [2024-11-10 10:34:56,384 INFO L231 Difference]: Finished difference. Result has 127 places, 148 transitions, 1306 flow [2024-11-10 10:34:56,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1306, PETRI_PLACES=127, PETRI_TRANSITIONS=148} [2024-11-10 10:34:56,385 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 83 predicate places. [2024-11-10 10:34:56,385 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 148 transitions, 1306 flow [2024-11-10 10:34:56,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.15625) internal successors, (517), 32 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:56,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:56,386 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:56,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:34:56,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:56,590 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:56,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1486504190, now seen corresponding path program 6 times [2024-11-10 10:34:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305729159] [2024-11-10 10:34:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:58,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:58,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305729159] [2024-11-10 10:34:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305729159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:58,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390740823] [2024-11-10 10:34:58,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:34:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:58,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:58,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:58,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:34:58,371 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-10 10:34:58,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:58,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 10:34:58,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:34:58,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:34:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390740823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:58,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:34:58,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2024-11-10 10:34:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522228421] [2024-11-10 10:34:58,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:58,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:34:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:34:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:34:58,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:34:58,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 148 transitions, 1306 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:58,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:58,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:34:58,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:59,337 INFO L124 PetriNetUnfolderBase]: 2483/5149 cut-off events. [2024-11-10 10:34:59,337 INFO L125 PetriNetUnfolderBase]: For 20292/20521 co-relation queries the response was YES. [2024-11-10 10:34:59,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17400 conditions, 5149 events. 2483/5149 cut-off events. For 20292/20521 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39853 event pairs, 804 based on Foata normal form. 98/4903 useless extension candidates. Maximal degree in co-relation 17365. Up to 2965 conditions per place. [2024-11-10 10:34:59,367 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 114 selfloop transitions, 49 changer transitions 18/197 dead transitions. [2024-11-10 10:34:59,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 197 transitions, 1907 flow [2024-11-10 10:34:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:34:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:34:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-10 10:34:59,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5710227272727273 [2024-11-10 10:34:59,369 INFO L175 Difference]: Start difference. First operand has 127 places, 148 transitions, 1306 flow. Second operand 8 states and 201 transitions. [2024-11-10 10:34:59,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 197 transitions, 1907 flow [2024-11-10 10:34:59,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 197 transitions, 1778 flow, removed 39 selfloop flow, removed 13 redundant places. [2024-11-10 10:34:59,448 INFO L231 Difference]: Finished difference. Result has 121 places, 152 transitions, 1357 flow [2024-11-10 10:34:59,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1357, PETRI_PLACES=121, PETRI_TRANSITIONS=152} [2024-11-10 10:34:59,448 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 77 predicate places. [2024-11-10 10:34:59,449 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 152 transitions, 1357 flow [2024-11-10 10:34:59,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:59,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:59,449 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:59,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:34:59,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:59,650 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:34:59,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:59,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1054692672, now seen corresponding path program 7 times [2024-11-10 10:34:59,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:59,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945923744] [2024-11-10 10:34:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:59,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945923744] [2024-11-10 10:35:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945923744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106496519] [2024-11-10 10:35:00,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:35:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:00,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:00,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:35:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:01,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 10:35:01,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:01,115 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 [2024-11-10 10:35:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:01,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:02,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2024-11-10 10:35:02,160 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-10 10:35:02,160 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 125 [2024-11-10 10:35:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106496519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:02,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:02,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2024-11-10 10:35:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533434114] [2024-11-10 10:35:02,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:02,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 10:35:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 10:35:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 10:35:02,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-10 10:35:02,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 152 transitions, 1357 flow. Second operand has 33 states, 33 states have (on average 16.09090909090909) internal successors, (531), 33 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:02,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:02,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-10 10:35:02,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:05,817 INFO L124 PetriNetUnfolderBase]: 2689/5595 cut-off events. [2024-11-10 10:35:05,817 INFO L125 PetriNetUnfolderBase]: For 20374/20523 co-relation queries the response was YES. [2024-11-10 10:35:05,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18417 conditions, 5595 events. 2689/5595 cut-off events. For 20374/20523 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43738 event pairs, 540 based on Foata normal form. 24/5234 useless extension candidates. Maximal degree in co-relation 18381. Up to 1182 conditions per place. [2024-11-10 10:35:05,855 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 203 selfloop transitions, 77 changer transitions 32/323 dead transitions. [2024-11-10 10:35:05,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 323 transitions, 2744 flow [2024-11-10 10:35:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 10:35:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 10:35:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 648 transitions. [2024-11-10 10:35:05,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-10 10:35:05,859 INFO L175 Difference]: Start difference. First operand has 121 places, 152 transitions, 1357 flow. Second operand 30 states and 648 transitions. [2024-11-10 10:35:05,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 323 transitions, 2744 flow [2024-11-10 10:35:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 323 transitions, 2592 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-11-10 10:35:05,987 INFO L231 Difference]: Finished difference. Result has 152 places, 166 transitions, 1621 flow [2024-11-10 10:35:05,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1621, PETRI_PLACES=152, PETRI_TRANSITIONS=166} [2024-11-10 10:35:05,989 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-11-10 10:35:05,989 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 166 transitions, 1621 flow [2024-11-10 10:35:05,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.09090909090909) internal successors, (531), 33 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:05,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:05,990 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:06,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:35:06,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:06,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:06,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash -543139535, now seen corresponding path program 8 times [2024-11-10 10:35:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:06,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989133579] [2024-11-10 10:35:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:06,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989133579] [2024-11-10 10:35:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989133579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704731459] [2024-11-10 10:35:08,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:35:08,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:08,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:08,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:35:09,027 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 10:35:09,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:09,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 10:35:09,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 10:35:09,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:35:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704731459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:35:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2024-11-10 10:35:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455690207] [2024-11-10 10:35:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:09,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:35:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:35:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-10 10:35:09,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:35:09,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 166 transitions, 1621 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:09,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:09,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:35:09,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:09,802 INFO L124 PetriNetUnfolderBase]: 2664/5647 cut-off events. [2024-11-10 10:35:09,803 INFO L125 PetriNetUnfolderBase]: For 26871/27111 co-relation queries the response was YES. [2024-11-10 10:35:09,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19584 conditions, 5647 events. 2664/5647 cut-off events. For 26871/27111 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44950 event pairs, 875 based on Foata normal form. 117/5385 useless extension candidates. Maximal degree in co-relation 19540. Up to 2938 conditions per place. [2024-11-10 10:35:09,859 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 120 selfloop transitions, 62 changer transitions 17/215 dead transitions. [2024-11-10 10:35:09,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 215 transitions, 2256 flow [2024-11-10 10:35:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:35:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:35:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-11-10 10:35:09,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-11-10 10:35:09,861 INFO L175 Difference]: Start difference. First operand has 152 places, 166 transitions, 1621 flow. Second operand 8 states and 206 transitions. [2024-11-10 10:35:09,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 215 transitions, 2256 flow [2024-11-10 10:35:09,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 215 transitions, 2128 flow, removed 47 selfloop flow, removed 13 redundant places. [2024-11-10 10:35:10,003 INFO L231 Difference]: Finished difference. Result has 147 places, 170 transitions, 1754 flow [2024-11-10 10:35:10,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1754, PETRI_PLACES=147, PETRI_TRANSITIONS=170} [2024-11-10 10:35:10,004 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 103 predicate places. [2024-11-10 10:35:10,004 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 170 transitions, 1754 flow [2024-11-10 10:35:10,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:10,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:10,005 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:10,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:10,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:35:10,206 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:10,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1488962099, now seen corresponding path program 1 times [2024-11-10 10:35:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42978885] [2024-11-10 10:35:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42978885] [2024-11-10 10:35:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42978885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:10,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:35:10,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339854290] [2024-11-10 10:35:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:10,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:35:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:10,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:35:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:35:10,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:35:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 170 transitions, 1754 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:35:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:11,930 INFO L124 PetriNetUnfolderBase]: 8283/13790 cut-off events. [2024-11-10 10:35:11,930 INFO L125 PetriNetUnfolderBase]: For 56388/56404 co-relation queries the response was YES. [2024-11-10 10:35:11,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46820 conditions, 13790 events. 8283/13790 cut-off events. For 56388/56404 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 100343 event pairs, 4434 based on Foata normal form. 10/12708 useless extension candidates. Maximal degree in co-relation 46774. Up to 8788 conditions per place. [2024-11-10 10:35:12,023 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 253 selfloop transitions, 24 changer transitions 6/293 dead transitions. [2024-11-10 10:35:12,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 293 transitions, 3501 flow [2024-11-10 10:35:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:35:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:35:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-10 10:35:12,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-11-10 10:35:12,027 INFO L175 Difference]: Start difference. First operand has 147 places, 170 transitions, 1754 flow. Second operand 6 states and 149 transitions. [2024-11-10 10:35:12,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 293 transitions, 3501 flow [2024-11-10 10:35:12,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 293 transitions, 3309 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-10 10:35:12,362 INFO L231 Difference]: Finished difference. Result has 149 places, 184 transitions, 1852 flow [2024-11-10 10:35:12,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1852, PETRI_PLACES=149, PETRI_TRANSITIONS=184} [2024-11-10 10:35:12,363 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 105 predicate places. [2024-11-10 10:35:12,363 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 184 transitions, 1852 flow [2024-11-10 10:35:12,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:12,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:12,363 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:12,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 10:35:12,364 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:12,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1597619495, now seen corresponding path program 2 times [2024-11-10 10:35:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:12,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710384737] [2024-11-10 10:35:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710384737] [2024-11-10 10:35:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710384737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051496368] [2024-11-10 10:35:12,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:35:12,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:12,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:12,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:12,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:35:12,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:35:12,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:12,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:35:12,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:12,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051496368] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:35:12,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-10 10:35:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139688448] [2024-11-10 10:35:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:12,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:35:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:35:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:35:12,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 10:35:12,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 184 transitions, 1852 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:12,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:12,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 10:35:12,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:14,121 INFO L124 PetriNetUnfolderBase]: 6998/12316 cut-off events. [2024-11-10 10:35:14,121 INFO L125 PetriNetUnfolderBase]: For 52780/53187 co-relation queries the response was YES. [2024-11-10 10:35:14,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46242 conditions, 12316 events. 6998/12316 cut-off events. For 52780/53187 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 92914 event pairs, 1824 based on Foata normal form. 169/12413 useless extension candidates. Maximal degree in co-relation 46194. Up to 6404 conditions per place. [2024-11-10 10:35:14,310 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 233 selfloop transitions, 19 changer transitions 0/266 dead transitions. [2024-11-10 10:35:14,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 3255 flow [2024-11-10 10:35:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:35:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:35:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-10 10:35:14,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-10 10:35:14,312 INFO L175 Difference]: Start difference. First operand has 149 places, 184 transitions, 1852 flow. Second operand 4 states and 108 transitions. [2024-11-10 10:35:14,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 3255 flow [2024-11-10 10:35:14,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 266 transitions, 3230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:35:14,542 INFO L231 Difference]: Finished difference. Result has 154 places, 191 transitions, 1982 flow [2024-11-10 10:35:14,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1982, PETRI_PLACES=154, PETRI_TRANSITIONS=191} [2024-11-10 10:35:14,543 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 110 predicate places. [2024-11-10 10:35:14,544 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 191 transitions, 1982 flow [2024-11-10 10:35:14,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:14,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:14,544 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:14,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:35:14,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:14,746 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:14,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1279712625, now seen corresponding path program 3 times [2024-11-10 10:35:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524271951] [2024-11-10 10:35:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:14,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:14,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524271951] [2024-11-10 10:35:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524271951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:35:14,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627785796] [2024-11-10 10:35:14,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:14,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:35:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:35:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:35:14,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:35:14,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 191 transitions, 1982 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:14,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:14,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:35:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:16,597 INFO L124 PetriNetUnfolderBase]: 8453/14191 cut-off events. [2024-11-10 10:35:16,597 INFO L125 PetriNetUnfolderBase]: For 64913/64945 co-relation queries the response was YES. [2024-11-10 10:35:16,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55496 conditions, 14191 events. 8453/14191 cut-off events. For 64913/64945 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 104491 event pairs, 4702 based on Foata normal form. 110/14295 useless extension candidates. Maximal degree in co-relation 55446. Up to 10008 conditions per place. [2024-11-10 10:35:16,716 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 242 selfloop transitions, 35 changer transitions 9/296 dead transitions. [2024-11-10 10:35:16,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 296 transitions, 3547 flow [2024-11-10 10:35:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:35:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:35:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-10 10:35:16,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-10 10:35:16,717 INFO L175 Difference]: Start difference. First operand has 154 places, 191 transitions, 1982 flow. Second operand 6 states and 146 transitions. [2024-11-10 10:35:16,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 296 transitions, 3547 flow [2024-11-10 10:35:17,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 296 transitions, 3537 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-10 10:35:17,047 INFO L231 Difference]: Finished difference. Result has 163 places, 205 transitions, 2267 flow [2024-11-10 10:35:17,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2267, PETRI_PLACES=163, PETRI_TRANSITIONS=205} [2024-11-10 10:35:17,048 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 119 predicate places. [2024-11-10 10:35:17,048 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 205 transitions, 2267 flow [2024-11-10 10:35:17,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:17,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:17,048 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:17,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 10:35:17,049 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -836078215, now seen corresponding path program 4 times [2024-11-10 10:35:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899954709] [2024-11-10 10:35:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899954709] [2024-11-10 10:35:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899954709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469536358] [2024-11-10 10:35:17,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:35:17,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:17,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:17,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:17,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:35:17,268 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:35:17,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:17,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:35:17,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:17,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469536358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:35:17,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:35:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-10 10:35:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539867565] [2024-11-10 10:35:17,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:35:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:35:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:35:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:35:17,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:35:17,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 205 transitions, 2267 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:17,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:17,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:35:17,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:19,768 INFO L124 PetriNetUnfolderBase]: 10173/16880 cut-off events. [2024-11-10 10:35:19,769 INFO L125 PetriNetUnfolderBase]: For 93939/93971 co-relation queries the response was YES. [2024-11-10 10:35:19,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71912 conditions, 16880 events. 10173/16880 cut-off events. For 93939/93971 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 125984 event pairs, 3045 based on Foata normal form. 178/17040 useless extension candidates. Maximal degree in co-relation 71857. Up to 7004 conditions per place. [2024-11-10 10:35:19,934 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 290 selfloop transitions, 82 changer transitions 11/393 dead transitions. [2024-11-10 10:35:19,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 393 transitions, 4892 flow [2024-11-10 10:35:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:35:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:35:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-11-10 10:35:19,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-10 10:35:19,936 INFO L175 Difference]: Start difference. First operand has 163 places, 205 transitions, 2267 flow. Second operand 10 states and 235 transitions. [2024-11-10 10:35:19,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 393 transitions, 4892 flow [2024-11-10 10:35:20,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 393 transitions, 4834 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-10 10:35:20,407 INFO L231 Difference]: Finished difference. Result has 177 places, 231 transitions, 2889 flow [2024-11-10 10:35:20,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2889, PETRI_PLACES=177, PETRI_TRANSITIONS=231} [2024-11-10 10:35:20,408 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-11-10 10:35:20,408 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 231 transitions, 2889 flow [2024-11-10 10:35:20,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:20,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:20,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:20,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:35:20,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 10:35:20,609 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:20,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1892822147, now seen corresponding path program 1 times [2024-11-10 10:35:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:20,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384468802] [2024-11-10 10:35:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:20,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384468802] [2024-11-10 10:35:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384468802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:20,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:20,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:35:20,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467306822] [2024-11-10 10:35:20,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:20,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:35:20,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:35:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:35:20,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-10 10:35:20,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 231 transitions, 2889 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:20,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:20,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-10 10:35:20,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:23,453 INFO L124 PetriNetUnfolderBase]: 10909/18197 cut-off events. [2024-11-10 10:35:23,453 INFO L125 PetriNetUnfolderBase]: For 140064/140064 co-relation queries the response was YES. [2024-11-10 10:35:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87914 conditions, 18197 events. 10909/18197 cut-off events. For 140064/140064 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 136614 event pairs, 2532 based on Foata normal form. 214/18409 useless extension candidates. Maximal degree in co-relation 87851. Up to 7950 conditions per place. [2024-11-10 10:35:23,649 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 285 selfloop transitions, 63 changer transitions 5/363 dead transitions. [2024-11-10 10:35:23,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 363 transitions, 4997 flow [2024-11-10 10:35:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:35:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:35:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-11-10 10:35:23,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2024-11-10 10:35:23,650 INFO L175 Difference]: Start difference. First operand has 177 places, 231 transitions, 2889 flow. Second operand 7 states and 170 transitions. [2024-11-10 10:35:23,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 363 transitions, 4997 flow [2024-11-10 10:35:24,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 363 transitions, 4821 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-11-10 10:35:24,228 INFO L231 Difference]: Finished difference. Result has 185 places, 243 transitions, 3196 flow [2024-11-10 10:35:24,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3196, PETRI_PLACES=185, PETRI_TRANSITIONS=243} [2024-11-10 10:35:24,228 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-11-10 10:35:24,229 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 243 transitions, 3196 flow [2024-11-10 10:35:24,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:24,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:24,229 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:24,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 10:35:24,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:24,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1334580279, now seen corresponding path program 2 times [2024-11-10 10:35:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954557723] [2024-11-10 10:35:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:24,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954557723] [2024-11-10 10:35:24,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954557723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:24,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:35:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357047820] [2024-11-10 10:35:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:24,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:35:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:35:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:35:24,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-10 10:35:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 243 transitions, 3196 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-10 10:35:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:26,854 INFO L124 PetriNetUnfolderBase]: 9205/15473 cut-off events. [2024-11-10 10:35:26,855 INFO L125 PetriNetUnfolderBase]: For 142304/142752 co-relation queries the response was YES. [2024-11-10 10:35:26,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77842 conditions, 15473 events. 9205/15473 cut-off events. For 142304/142752 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 115558 event pairs, 4140 based on Foata normal form. 257/15676 useless extension candidates. Maximal degree in co-relation 77775. Up to 10167 conditions per place. [2024-11-10 10:35:26,975 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 209 selfloop transitions, 44 changer transitions 25/290 dead transitions. [2024-11-10 10:35:26,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 290 transitions, 4102 flow [2024-11-10 10:35:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:35:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:35:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-10 10:35:26,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5162337662337663 [2024-11-10 10:35:26,976 INFO L175 Difference]: Start difference. First operand has 185 places, 243 transitions, 3196 flow. Second operand 7 states and 159 transitions. [2024-11-10 10:35:26,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 290 transitions, 4102 flow [2024-11-10 10:35:27,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 290 transitions, 4036 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-10 10:35:27,447 INFO L231 Difference]: Finished difference. Result has 188 places, 211 transitions, 2856 flow [2024-11-10 10:35:27,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2856, PETRI_PLACES=188, PETRI_TRANSITIONS=211} [2024-11-10 10:35:27,448 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-11-10 10:35:27,448 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 211 transitions, 2856 flow [2024-11-10 10:35:27,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:27,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:27,448 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:27,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 10:35:27,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:27,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash 608682133, now seen corresponding path program 5 times [2024-11-10 10:35:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344098562] [2024-11-10 10:35:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:27,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:27,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344098562] [2024-11-10 10:35:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344098562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:27,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:35:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309657851] [2024-11-10 10:35:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:27,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:35:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:35:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:35:27,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-10 10:35:27,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 211 transitions, 2856 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:27,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:27,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-10 10:35:27,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:29,775 INFO L124 PetriNetUnfolderBase]: 8062/13514 cut-off events. [2024-11-10 10:35:29,775 INFO L125 PetriNetUnfolderBase]: For 127501/127723 co-relation queries the response was YES. [2024-11-10 10:35:29,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69304 conditions, 13514 events. 8062/13514 cut-off events. For 127501/127723 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 97126 event pairs, 3181 based on Foata normal form. 144/13586 useless extension candidates. Maximal degree in co-relation 69236. Up to 6261 conditions per place. [2024-11-10 10:35:29,874 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 190 selfloop transitions, 37 changer transitions 24/266 dead transitions. [2024-11-10 10:35:29,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 266 transitions, 3832 flow [2024-11-10 10:35:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:35:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:35:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-11-10 10:35:29,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-11-10 10:35:29,875 INFO L175 Difference]: Start difference. First operand has 188 places, 211 transitions, 2856 flow. Second operand 7 states and 156 transitions. [2024-11-10 10:35:29,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 266 transitions, 3832 flow [2024-11-10 10:35:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 266 transitions, 3716 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-11-10 10:35:30,229 INFO L231 Difference]: Finished difference. Result has 186 places, 192 transitions, 2623 flow [2024-11-10 10:35:30,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2623, PETRI_PLACES=186, PETRI_TRANSITIONS=192} [2024-11-10 10:35:30,230 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-11-10 10:35:30,230 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 192 transitions, 2623 flow [2024-11-10 10:35:30,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:30,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:30,230 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:30,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 10:35:30,231 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1983077850, now seen corresponding path program 9 times [2024-11-10 10:35:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48973171] [2024-11-10 10:35:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48973171] [2024-11-10 10:35:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48973171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:35:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509977984] [2024-11-10 10:35:32,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:35:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:35:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:32,732 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:35:32,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:35:32,811 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-10 10:35:32,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:35:32,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 10:35:32,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:35:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 10:35:33,017 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:35:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509977984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:33,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:35:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2024-11-10 10:35:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900831535] [2024-11-10 10:35:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:33,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:35:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:35:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:35:33,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-10 10:35:33,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 192 transitions, 2623 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:33,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:33,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-10 10:35:33,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:34,366 INFO L124 PetriNetUnfolderBase]: 5229/10033 cut-off events. [2024-11-10 10:35:34,366 INFO L125 PetriNetUnfolderBase]: For 97944/98422 co-relation queries the response was YES. [2024-11-10 10:35:34,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51427 conditions, 10033 events. 5229/10033 cut-off events. For 97944/98422 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81016 event pairs, 1724 based on Foata normal form. 230/10067 useless extension candidates. Maximal degree in co-relation 51359. Up to 4287 conditions per place. [2024-11-10 10:35:34,472 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 119 selfloop transitions, 50 changer transitions 27/241 dead transitions. [2024-11-10 10:35:34,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 241 transitions, 3362 flow [2024-11-10 10:35:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:35:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:35:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-11-10 10:35:34,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-11-10 10:35:34,473 INFO L175 Difference]: Start difference. First operand has 186 places, 192 transitions, 2623 flow. Second operand 8 states and 196 transitions. [2024-11-10 10:35:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 241 transitions, 3362 flow [2024-11-10 10:35:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 241 transitions, 3300 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-10 10:35:34,688 INFO L231 Difference]: Finished difference. Result has 183 places, 185 transitions, 2553 flow [2024-11-10 10:35:34,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2570, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2553, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2024-11-10 10:35:34,688 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 139 predicate places. [2024-11-10 10:35:34,688 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 2553 flow [2024-11-10 10:35:34,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:34,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:34,689 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:34,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 10:35:34,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 10:35:34,889 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:35:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1336917938, now seen corresponding path program 10 times [2024-11-10 10:35:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350581615] [2024-11-10 10:35:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat