./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:53:38,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:53:38,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:53:38,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:53:38,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:53:38,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:53:38,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:53:38,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:53:38,965 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:53:38,968 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:53:38,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:53:38,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:53:38,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:53:38,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:53:38,970 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:53:38,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:53:38,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:53:38,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:53:38,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:53:38,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:53:38,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:53:38,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:53:38,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:53:38,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:53:38,974 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:53:38,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:53:38,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:53:38,975 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:53:38,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:53:38,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:53:38,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:53:38,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:53:38,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:53:38,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:53:38,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:53:38,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:53:38,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:53:38,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:53:38,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:53:38,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:53:38,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:53:38,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:53:38,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-22 13:53:39,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:53:39,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:53:39,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:53:39,261 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:53:39,261 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:53:39,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-22 13:53:40,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:53:40,923 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:53:40,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-22 13:53:40,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf38ae9e/0ec650cccca44fc4a68def8f4a01f48d/FLAG2ce611651 [2024-11-22 13:53:40,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf38ae9e/0ec650cccca44fc4a68def8f4a01f48d [2024-11-22 13:53:40,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:53:40,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:53:40,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:53:40,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:53:40,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:53:40,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:40" (1/1) ... [2024-11-22 13:53:40,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38967055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:40, skipping insertion in model container [2024-11-22 13:53:40,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:40" (1/1) ... [2024-11-22 13:53:40,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:53:41,209 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-simple-array-sum.wvr.c[2429,2442] [2024-11-22 13:53:41,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:53:41,226 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:53:41,243 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-simple-array-sum.wvr.c[2429,2442] [2024-11-22 13:53:41,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:53:41,263 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:53:41,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41 WrapperNode [2024-11-22 13:53:41,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:53:41,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:53:41,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:53:41,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:53:41,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,296 INFO L138 Inliner]: procedures = 23, calls = 20, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 109 [2024-11-22 13:53:41,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:53:41,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:53:41,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:53:41,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:53:41,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,327 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:53:41,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:53:41,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:53:41,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:53:41,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:53:41,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (1/1) ... [2024-11-22 13:53:41,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:53:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:41,393 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) [2024-11-22 13:53:41,397 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 [2024-11-22 13:53:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:53:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:53:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:53:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:53:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:53:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:53:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:53:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:53:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:53:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:53:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:53:41,446 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:53:41,575 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:53:41,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:53:41,910 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:53:41,910 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:53:42,128 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:53:42,128 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-22 13:53:42,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:42 BoogieIcfgContainer [2024-11-22 13:53:42,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:53:42,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:53:42,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:53:42,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:53:42,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:53:40" (1/3) ... [2024-11-22 13:53:42,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf74370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:42, skipping insertion in model container [2024-11-22 13:53:42,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:41" (2/3) ... [2024-11-22 13:53:42,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf74370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:42, skipping insertion in model container [2024-11-22 13:53:42,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:42" (3/3) ... [2024-11-22 13:53:42,140 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-22 13:53:42,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:53:42,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:53:42,158 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:53:42,221 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:53:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 41 transitions, 103 flow [2024-11-22 13:53:42,290 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-22 13:53:42,291 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:53:42,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 6/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-11-22 13:53:42,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 41 transitions, 103 flow [2024-11-22 13:53:42,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 92 flow [2024-11-22 13:53:42,311 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:53:42,317 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;@312e2c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:53:42,318 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:53:42,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:53:42,331 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-22 13:53:42,331 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:53:42,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:42,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:42,332 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)] === [2024-11-22 13:53:42,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1288120486, now seen corresponding path program 1 times [2024-11-22 13:53:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238394542] [2024-11-22 13:53:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238394542] [2024-11-22 13:53:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238394542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:53:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405077046] [2024-11-22 13:53:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:43,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:53:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:53:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:53:43,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-22 13:53:43,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-22 13:53:43,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:43,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-22 13:53:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:43,550 INFO L124 PetriNetUnfolderBase]: 1212/1936 cut-off events. [2024-11-22 13:53:43,551 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-22 13:53:43,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1936 events. 1212/1936 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9894 event pairs, 782 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 1838. Up to 1028 conditions per place. [2024-11-22 13:53:43,572 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 49 selfloop transitions, 5 changer transitions 1/63 dead transitions. [2024-11-22 13:53:43,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 272 flow [2024-11-22 13:53:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:53:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:53:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-22 13:53:43,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-22 13:53:43,587 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 4 states and 100 transitions. [2024-11-22 13:53:43,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 272 flow [2024-11-22 13:53:43,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:53:43,599 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 114 flow [2024-11-22 13:53:43,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-11-22 13:53:43,606 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-22 13:53:43,608 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 114 flow [2024-11-22 13:53:43,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-22 13:53:43,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:43,609 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] [2024-11-22 13:53:43,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:53:43,609 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)] === [2024-11-22 13:53:43,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1526085590, now seen corresponding path program 1 times [2024-11-22 13:53:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:43,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997800246] [2024-11-22 13:53:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:43,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997800246] [2024-11-22 13:53:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997800246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208539665] [2024-11-22 13:53:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:43,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:43,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:43,807 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) [2024-11-22 13:53:43,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:53:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:43,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:53:43,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:44,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208539665] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:44,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:53:44,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:53:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886620484] [2024-11-22 13:53:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:44,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:53:44,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-22 13:53:44,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-22 13:53:44,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:44,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-22 13:53:44,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:44,499 INFO L124 PetriNetUnfolderBase]: 2211/3639 cut-off events. [2024-11-22 13:53:44,499 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-11-22 13:53:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7270 conditions, 3639 events. 2211/3639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21691 event pairs, 1590 based on Foata normal form. 0/3346 useless extension candidates. Maximal degree in co-relation 5571. Up to 1579 conditions per place. [2024-11-22 13:53:44,524 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 52 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-11-22 13:53:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 297 flow [2024-11-22 13:53:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:53:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:53:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-22 13:53:44,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2024-11-22 13:53:44,528 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 114 flow. Second operand 5 states and 117 transitions. [2024-11-22 13:53:44,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 297 flow [2024-11-22 13:53:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:44,532 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 138 flow [2024-11-22 13:53:44,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-22 13:53:44,534 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-22 13:53:44,534 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 138 flow [2024-11-22 13:53:44,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-11-22 13:53:44,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:44,535 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] [2024-11-22 13:53:44,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:53:44,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:44,736 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)] === [2024-11-22 13:53:44,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash 624112852, now seen corresponding path program 1 times [2024-11-22 13:53:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145151616] [2024-11-22 13:53:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:44,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145151616] [2024-11-22 13:53:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145151616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908135398] [2024-11-22 13:53:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:44,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:53:44,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:53:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:44,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:53:44,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:44,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908135398] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:53:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:53:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879709583] [2024-11-22 13:53:45,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:45,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:45,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:45,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:53:45,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-22 13:53:45,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:45,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:45,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-22 13:53:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:45,512 INFO L124 PetriNetUnfolderBase]: 2673/4235 cut-off events. [2024-11-22 13:53:45,513 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-11-22 13:53:45,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 4235 events. 2673/4235 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24542 event pairs, 1002 based on Foata normal form. 0/3834 useless extension candidates. Maximal degree in co-relation 6912. Up to 1149 conditions per place. [2024-11-22 13:53:45,541 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 78 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-11-22 13:53:45,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 98 transitions, 440 flow [2024-11-22 13:53:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-22 13:53:45,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-22 13:53:45,544 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 138 flow. Second operand 6 states and 153 transitions. [2024-11-22 13:53:45,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 98 transitions, 440 flow [2024-11-22 13:53:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 98 transitions, 436 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:45,547 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 186 flow [2024-11-22 13:53:45,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-22 13:53:45,548 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-22 13:53:45,548 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 186 flow [2024-11-22 13:53:45,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:45,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:45,549 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] [2024-11-22 13:53:45,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:53:45,749 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,SelfDestructingSolverStorable2 [2024-11-22 13:53:45,750 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)] === [2024-11-22 13:53:45,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash -688707375, now seen corresponding path program 1 times [2024-11-22 13:53:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744281300] [2024-11-22 13:53:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:45,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744281300] [2024-11-22 13:53:45,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744281300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:45,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:45,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:53:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457323133] [2024-11-22 13:53:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:45,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:53:45,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-22 13:53:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 186 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) [2024-11-22 13:53:45,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:45,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-22 13:53:45,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:46,237 INFO L124 PetriNetUnfolderBase]: 1759/2899 cut-off events. [2024-11-22 13:53:46,238 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2024-11-22 13:53:46,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2899 events. 1759/2899 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16181 event pairs, 1038 based on Foata normal form. 164/2829 useless extension candidates. Maximal degree in co-relation 3245. Up to 1233 conditions per place. [2024-11-22 13:53:46,256 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 61 selfloop transitions, 8 changer transitions 4/82 dead transitions. [2024-11-22 13:53:46,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 404 flow [2024-11-22 13:53:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-11-22 13:53:46,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-22 13:53:46,259 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 186 flow. Second operand 6 states and 138 transitions. [2024-11-22 13:53:46,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 404 flow [2024-11-22 13:53:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:53:46,265 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 180 flow [2024-11-22 13:53:46,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-22 13:53:46,266 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-22 13:53:46,267 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 180 flow [2024-11-22 13:53:46,268 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) [2024-11-22 13:53:46,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:46,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:46,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:53:46,268 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)] === [2024-11-22 13:53:46,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1695076916, now seen corresponding path program 1 times [2024-11-22 13:53:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872293909] [2024-11-22 13:53:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:46,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:46,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872293909] [2024-11-22 13:53:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872293909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:46,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:53:46,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761595347] [2024-11-22 13:53:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:46,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:53:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:53:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:53:46,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-22 13:53:46,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-22 13:53:46,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:46,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-22 13:53:46,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:46,664 INFO L124 PetriNetUnfolderBase]: 2362/3861 cut-off events. [2024-11-22 13:53:46,664 INFO L125 PetriNetUnfolderBase]: For 3292/3292 co-relation queries the response was YES. [2024-11-22 13:53:46,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 3861 events. 2362/3861 cut-off events. For 3292/3292 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20833 event pairs, 494 based on Foata normal form. 92/3938 useless extension candidates. Maximal degree in co-relation 4953. Up to 2248 conditions per place. [2024-11-22 13:53:46,695 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 65 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-22 13:53:46,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 448 flow [2024-11-22 13:53:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:53:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:53:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-22 13:53:46,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-22 13:53:46,697 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 180 flow. Second operand 4 states and 100 transitions. [2024-11-22 13:53:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 448 flow [2024-11-22 13:53:46,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 401 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-22 13:53:46,702 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 178 flow [2024-11-22 13:53:46,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-22 13:53:46,703 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-22 13:53:46,703 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 178 flow [2024-11-22 13:53:46,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-22 13:53:46,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:46,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:46,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:53:46,704 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)] === [2024-11-22 13:53:46,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1535561463, now seen corresponding path program 1 times [2024-11-22 13:53:46,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:46,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558762582] [2024-11-22 13:53:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:46,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558762582] [2024-11-22 13:53:46,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558762582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767933378] [2024-11-22 13:53:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:46,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:46,794 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) [2024-11-22 13:53:46,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:53:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:46,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:53:46,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:46,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767933378] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:53:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:53:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064454863] [2024-11-22 13:53:46,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:46,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:46,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:53:46,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-22 13:53:46,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2024-11-22 13:53:46,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:46,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-22 13:53:46,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:47,364 INFO L124 PetriNetUnfolderBase]: 2189/3559 cut-off events. [2024-11-22 13:53:47,364 INFO L125 PetriNetUnfolderBase]: For 1904/1904 co-relation queries the response was YES. [2024-11-22 13:53:47,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8453 conditions, 3559 events. 2189/3559 cut-off events. For 1904/1904 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19454 event pairs, 607 based on Foata normal form. 0/3384 useless extension candidates. Maximal degree in co-relation 4798. Up to 1207 conditions per place. [2024-11-22 13:53:47,388 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 74 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2024-11-22 13:53:47,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 482 flow [2024-11-22 13:53:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-22 13:53:47,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-22 13:53:47,391 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 178 flow. Second operand 6 states and 144 transitions. [2024-11-22 13:53:47,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 482 flow [2024-11-22 13:53:47,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:53:47,394 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 215 flow [2024-11-22 13:53:47,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-22 13:53:47,395 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-22 13:53:47,395 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 215 flow [2024-11-22 13:53:47,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2024-11-22 13:53:47,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:47,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:47,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:53:47,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:47,597 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)] === [2024-11-22 13:53:47,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash -485435232, now seen corresponding path program 1 times [2024-11-22 13:53:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248702477] [2024-11-22 13:53:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248702477] [2024-11-22 13:53:47,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248702477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:53:47,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820899825] [2024-11-22 13:53:47,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:47,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:47,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:53:47,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-22 13:53:47,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:47,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:47,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-22 13:53:47,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:48,238 INFO L124 PetriNetUnfolderBase]: 3274/5403 cut-off events. [2024-11-22 13:53:48,239 INFO L125 PetriNetUnfolderBase]: For 3676/3712 co-relation queries the response was YES. [2024-11-22 13:53:48,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13885 conditions, 5403 events. 3274/5403 cut-off events. For 3676/3712 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 32009 event pairs, 1121 based on Foata normal form. 128/5495 useless extension candidates. Maximal degree in co-relation 8024. Up to 2792 conditions per place. [2024-11-22 13:53:48,330 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 92 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-11-22 13:53:48,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 681 flow [2024-11-22 13:53:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-22 13:53:48,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-11-22 13:53:48,332 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 215 flow. Second operand 6 states and 147 transitions. [2024-11-22 13:53:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 681 flow [2024-11-22 13:53:48,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 118 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:48,338 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 344 flow [2024-11-22 13:53:48,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-11-22 13:53:48,340 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-11-22 13:53:48,340 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 344 flow [2024-11-22 13:53:48,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:48,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:48,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:48,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:53:48,345 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)] === [2024-11-22 13:53:48,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -734165712, now seen corresponding path program 2 times [2024-11-22 13:53:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636464761] [2024-11-22 13:53:48,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:48,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:48,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:48,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:48,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636464761] [2024-11-22 13:53:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636464761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:48,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:48,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:53:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149719584] [2024-11-22 13:53:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:48,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:53:48,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-22 13:53:48,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:48,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:48,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-22 13:53:48,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:49,293 INFO L124 PetriNetUnfolderBase]: 4199/6988 cut-off events. [2024-11-22 13:53:49,293 INFO L125 PetriNetUnfolderBase]: For 9510/9584 co-relation queries the response was YES. [2024-11-22 13:53:49,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20356 conditions, 6988 events. 4199/6988 cut-off events. For 9510/9584 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 42745 event pairs, 1417 based on Foata normal form. 140/7115 useless extension candidates. Maximal degree in co-relation 12852. Up to 2557 conditions per place. [2024-11-22 13:53:49,332 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 102 selfloop transitions, 13 changer transitions 1/127 dead transitions. [2024-11-22 13:53:49,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 851 flow [2024-11-22 13:53:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-22 13:53:49,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-22 13:53:49,334 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 344 flow. Second operand 6 states and 144 transitions. [2024-11-22 13:53:49,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 851 flow [2024-11-22 13:53:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 849 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 13:53:49,349 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 442 flow [2024-11-22 13:53:49,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-22 13:53:49,351 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-11-22 13:53:49,352 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 442 flow [2024-11-22 13:53:49,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:49,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:49,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:49,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:53:49,354 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)] === [2024-11-22 13:53:49,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 209938992, now seen corresponding path program 3 times [2024-11-22 13:53:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271303912] [2024-11-22 13:53:49,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:53:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:49,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:53:49,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:53:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271303912] [2024-11-22 13:53:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271303912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:49,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:49,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:53:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644083801] [2024-11-22 13:53:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:49,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:53:49,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-22 13:53:49,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:49,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:49,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-22 13:53:49,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:50,223 INFO L124 PetriNetUnfolderBase]: 4453/7454 cut-off events. [2024-11-22 13:53:50,223 INFO L125 PetriNetUnfolderBase]: For 16083/16119 co-relation queries the response was YES. [2024-11-22 13:53:50,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22592 conditions, 7454 events. 4453/7454 cut-off events. For 16083/16119 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 44310 event pairs, 847 based on Foata normal form. 128/7549 useless extension candidates. Maximal degree in co-relation 14241. Up to 3136 conditions per place. [2024-11-22 13:53:50,290 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 91 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-11-22 13:53:50,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 885 flow [2024-11-22 13:53:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-22 13:53:50,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-22 13:53:50,292 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 442 flow. Second operand 6 states and 146 transitions. [2024-11-22 13:53:50,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 885 flow [2024-11-22 13:53:50,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 873 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:50,315 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 535 flow [2024-11-22 13:53:50,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-22 13:53:50,316 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-11-22 13:53:50,316 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 535 flow [2024-11-22 13:53:50,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:50,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:50,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:50,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:53:50,317 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)] === [2024-11-22 13:53:50,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:50,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1411449525, now seen corresponding path program 1 times [2024-11-22 13:53:50,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:50,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360963117] [2024-11-22 13:53:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:53:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360963117] [2024-11-22 13:53:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360963117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037955985] [2024-11-22 13:53:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:53:50,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:50,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:50,416 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) [2024-11-22 13:53:50,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:53:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:53:50,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 13:53:50,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:53:50,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:53:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037955985] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:50,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:53:50,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-22 13:53:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413568709] [2024-11-22 13:53:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:50,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:53:50,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-22 13:53:50,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:53:50,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:50,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-22 13:53:50,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:51,398 INFO L124 PetriNetUnfolderBase]: 4481/7629 cut-off events. [2024-11-22 13:53:51,399 INFO L125 PetriNetUnfolderBase]: For 18304/18304 co-relation queries the response was YES. [2024-11-22 13:53:51,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23468 conditions, 7629 events. 4481/7629 cut-off events. For 18304/18304 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 46864 event pairs, 1659 based on Foata normal form. 0/7293 useless extension candidates. Maximal degree in co-relation 13912. Up to 2324 conditions per place. [2024-11-22 13:53:51,444 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 87 selfloop transitions, 14 changer transitions 4/124 dead transitions. [2024-11-22 13:53:51,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 1032 flow [2024-11-22 13:53:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:53:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:53:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-22 13:53:51,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-22 13:53:51,446 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 535 flow. Second operand 6 states and 146 transitions. [2024-11-22 13:53:51,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 1032 flow [2024-11-22 13:53:51,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 976 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-22 13:53:51,478 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 618 flow [2024-11-22 13:53:51,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-22 13:53:51,479 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-22 13:53:51,479 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 618 flow [2024-11-22 13:53:51,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:53:51,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:51,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:51,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:53:51,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:51,684 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)] === [2024-11-22 13:53:51,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1426972774, now seen corresponding path program 4 times [2024-11-22 13:53:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898399220] [2024-11-22 13:53:51,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:53:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:51,706 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:53:51,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:53:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898399220] [2024-11-22 13:53:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898399220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:53:51,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:53:51,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:53:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069415470] [2024-11-22 13:53:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:53:51,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:53:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:53:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:53:51,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-22 13:53:51,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:51,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:51,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-22 13:53:51,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:52,547 INFO L124 PetriNetUnfolderBase]: 4881/7756 cut-off events. [2024-11-22 13:53:52,547 INFO L125 PetriNetUnfolderBase]: For 24698/25009 co-relation queries the response was YES. [2024-11-22 13:53:52,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27248 conditions, 7756 events. 4881/7756 cut-off events. For 24698/25009 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 45547 event pairs, 1924 based on Foata normal form. 21/7564 useless extension candidates. Maximal degree in co-relation 21526. Up to 3632 conditions per place. [2024-11-22 13:53:52,605 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 131 selfloop transitions, 5 changer transitions 5/158 dead transitions. [2024-11-22 13:53:52,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 158 transitions, 1536 flow [2024-11-22 13:53:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:53:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:53:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-22 13:53:52,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-22 13:53:52,607 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 618 flow. Second operand 5 states and 125 transitions. [2024-11-22 13:53:52,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 158 transitions, 1536 flow [2024-11-22 13:53:52,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 158 transitions, 1525 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 13:53:52,634 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 654 flow [2024-11-22 13:53:52,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=654, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-11-22 13:53:52,635 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-11-22 13:53:52,635 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 654 flow [2024-11-22 13:53:52,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-22 13:53:52,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:52,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:52,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:53:52,636 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)] === [2024-11-22 13:53:52,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 980283394, now seen corresponding path program 5 times [2024-11-22 13:53:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:52,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545992495] [2024-11-22 13:53:52,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:53:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:52,651 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:52,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:52,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545992495] [2024-11-22 13:53:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545992495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862218122] [2024-11-22 13:53:52,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:53:52,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:52,700 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) [2024-11-22 13:53:52,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:53:52,765 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:52,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:52,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 13:53:52,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:52,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862218122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:53:52,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:53:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-22 13:53:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399288985] [2024-11-22 13:53:52,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:53:52,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:53:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:53:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:53:52,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-11-22 13:53:52,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-22 13:53:52,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:52,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-11-22 13:53:52,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:54,318 INFO L124 PetriNetUnfolderBase]: 9333/14011 cut-off events. [2024-11-22 13:53:54,318 INFO L125 PetriNetUnfolderBase]: For 45100/45100 co-relation queries the response was YES. [2024-11-22 13:53:54,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51212 conditions, 14011 events. 9333/14011 cut-off events. For 45100/45100 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 78000 event pairs, 380 based on Foata normal form. 122/14130 useless extension candidates. Maximal degree in co-relation 37315. Up to 4472 conditions per place. [2024-11-22 13:53:54,364 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 0 selfloop transitions, 0 changer transitions 241/241 dead transitions. [2024-11-22 13:53:54,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 241 transitions, 2222 flow [2024-11-22 13:53:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:53:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:53:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-11-22 13:53:54,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4700665188470067 [2024-11-22 13:53:54,366 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 654 flow. Second operand 11 states and 212 transitions. [2024-11-22 13:53:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 241 transitions, 2222 flow [2024-11-22 13:53:54,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 241 transitions, 2186 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:54,407 INFO L231 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2024-11-22 13:53:54,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2024-11-22 13:53:54,407 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-11-22 13:53:54,407 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2024-11-22 13:53:54,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-22 13:53:54,410 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-22 13:53:54,410 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-22 13:53:54,410 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-22 13:53:54,410 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-22 13:53:54,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 13:53:54,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 13:53:54,615 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:54,619 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:53:54,619 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:53:54,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:53:54 BasicIcfg [2024-11-22 13:53:54,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:53:54,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:53:54,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:53:54,627 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:53:54,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:42" (3/4) ... [2024-11-22 13:53:54,630 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:53:54,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-22 13:53:54,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-22 13:53:54,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-22 13:53:54,643 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2024-11-22 13:53:54,644 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-22 13:53:54,645 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-22 13:53:54,645 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-22 13:53:54,746 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:53:54,747 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:53:54,747 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:53:54,748 INFO L158 Benchmark]: Toolchain (without parser) took 13789.57ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 83.9MB in the beginning and 787.5MB in the end (delta: -703.6MB). Peak memory consumption was 434.3MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,748 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 114.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:53:54,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.38ms. Allocated memory is still 153.1MB. Free memory was 83.7MB in the beginning and 70.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.73ms. Allocated memory is still 153.1MB. Free memory was 70.1MB in the beginning and 68.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,748 INFO L158 Benchmark]: Boogie Preprocessor took 53.07ms. Allocated memory is still 153.1MB. Free memory was 68.2MB in the beginning and 65.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,749 INFO L158 Benchmark]: RCFGBuilder took 778.54ms. Allocated memory is still 153.1MB. Free memory was 65.7MB in the beginning and 87.1MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,749 INFO L158 Benchmark]: TraceAbstraction took 12495.35ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 86.4MB in the beginning and 792.7MB in the end (delta: -706.3MB). Peak memory consumption was 587.6MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,749 INFO L158 Benchmark]: Witness Printer took 119.99ms. Allocated memory is still 1.3GB. Free memory was 792.7MB in the beginning and 787.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:53:54,751 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 114.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.38ms. Allocated memory is still 153.1MB. Free memory was 83.7MB in the beginning and 70.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.73ms. Allocated memory is still 153.1MB. Free memory was 70.1MB in the beginning and 68.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.07ms. Allocated memory is still 153.1MB. Free memory was 68.2MB in the beginning and 65.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 778.54ms. Allocated memory is still 153.1MB. Free memory was 65.7MB in the beginning and 87.1MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12495.35ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 86.4MB in the beginning and 792.7MB in the end (delta: -706.3MB). Peak memory consumption was 587.6MB. Max. memory is 16.1GB. * Witness Printer took 119.99ms. Allocated memory is still 1.3GB. Free memory was 792.7MB in the beginning and 787.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 59 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 658 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 591 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2265 IncrementalHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 12 mSDtfsCounter, 2265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=654occurred in iteration=11, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 470 NumberOfCodeBlocks, 433 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1560 SizeOfPredicates, 15 NumberOfNonLiveVariables, 877 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 63/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:53:54,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE