./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-symm.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 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:41:30,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:41:30,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:41:30,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:41:30,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:41:30,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:41:30,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:41:30,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:41:30,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:41:30,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:41:30,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:41:30,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:41:30,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:41:30,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:41:30,212 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:41:30,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:41:30,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:41:30,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:41:30,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:41:30,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:41:30,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:41:30,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:41:30,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:41:30,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:41:30,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:41:30,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:41:30,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:41:30,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:41:30,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:41:30,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:41:30,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:41:30,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:41:30,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:30,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:41:30,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:41:30,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:41:30,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:41:30,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:41:30,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:41:30,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:41:30,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:41:30,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:41:30,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2024-11-09 02:41:30,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:41:30,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:41:30,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:41:30,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:41:30,491 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:41:30,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-09 02:41:32,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:41:32,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:41:32,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-09 02:41:32,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc5ca5dad/496295be9bec4e6fabb51aa022a220be/FLAG7fb995201 [2024-11-09 02:41:32,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc5ca5dad/496295be9bec4e6fabb51aa022a220be [2024-11-09 02:41:32,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:41:32,636 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:41:32,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:32,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:41:32,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:41:32,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e27ecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32, skipping insertion in model container [2024-11-09 02:41:32,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:41:33,003 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/chl-nzb-file-symm.wvr.c[4955,4968] [2024-11-09 02:41:33,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:33,029 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:41:33,070 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/chl-nzb-file-symm.wvr.c[4955,4968] [2024-11-09 02:41:33,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:33,096 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:41:33,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33 WrapperNode [2024-11-09 02:41:33,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:33,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:33,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:41:33,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:41:33,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,158 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 407 [2024-11-09 02:41:33,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:33,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:41:33,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:41:33,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:41:33,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,222 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 02:41:33,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:41:33,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:41:33,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:41:33,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:41:33,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (1/1) ... [2024-11-09 02:41:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:33,316 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) [2024-11-09 02:41:33,324 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 [2024-11-09 02:41:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:41:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:41:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:41:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:41:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:41:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:41:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:41:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:41:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:41:33,376 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:41:33,539 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:41:33,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:41:34,237 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:41:34,238 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:41:34,984 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:41:34,985 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:41:34,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:34 BoogieIcfgContainer [2024-11-09 02:41:34,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:41:34,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:41:34,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:41:34,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:41:34,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:41:32" (1/3) ... [2024-11-09 02:41:34,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320ce216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:34, skipping insertion in model container [2024-11-09 02:41:34,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:33" (2/3) ... [2024-11-09 02:41:34,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320ce216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:34, skipping insertion in model container [2024-11-09 02:41:34,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:34" (3/3) ... [2024-11-09 02:41:34,997 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2024-11-09 02:41:35,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:41:35,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:41:35,017 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:41:35,124 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:41:35,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 34 transitions, 82 flow [2024-11-09 02:41:35,200 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2024-11-09 02:41:35,200 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:41:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 8/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-09 02:41:35,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 34 transitions, 82 flow [2024-11-09 02:41:35,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2024-11-09 02:41:35,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:41:35,224 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;@30aee38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:41:35,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:41:35,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:41:35,239 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2024-11-09 02:41:35,239 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:41:35,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:35,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:35,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:35,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash 423359638, now seen corresponding path program 1 times [2024-11-09 02:41:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761759547] [2024-11-09 02:41:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:41:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761759547] [2024-11-09 02:41:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761759547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:35,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:35,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:41:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636303261] [2024-11-09 02:41:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:35,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:35,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-09 02:41:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:35,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:36,088 INFO L124 PetriNetUnfolderBase]: 202/329 cut-off events. [2024-11-09 02:41:36,089 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-09 02:41:36,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 329 events. 202/329 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1001 event pairs, 138 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 620. Up to 327 conditions per place. [2024-11-09 02:41:36,097 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 26 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-11-09 02:41:36,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 134 flow [2024-11-09 02:41:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-09 02:41:36,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-11-09 02:41:36,114 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 74 flow. Second operand 3 states and 43 transitions. [2024-11-09 02:41:36,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 134 flow [2024-11-09 02:41:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:41:36,121 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 84 flow [2024-11-09 02:41:36,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2024-11-09 02:41:36,130 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-11-09 02:41:36,130 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 84 flow [2024-11-09 02:41:36,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-09 02:41:36,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:36,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:36,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:41:36,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:36,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1120329308, now seen corresponding path program 1 times [2024-11-09 02:41:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904593483] [2024-11-09 02:41:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:36,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:41:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904593483] [2024-11-09 02:41:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904593483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170069631] [2024-11-09 02:41:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:36,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:36,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:36,403 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) [2024-11-09 02:41:36,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:41:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:36,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:41:36,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:41:36,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:41:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170069631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:36,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 02:41:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600764687] [2024-11-09 02:41:36,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:36,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:41:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:41:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:41:36,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:36,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-11-09 02:41:36,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:36,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:36,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:36,894 INFO L124 PetriNetUnfolderBase]: 202/335 cut-off events. [2024-11-09 02:41:36,894 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 02:41:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 335 events. 202/335 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 999 event pairs, 138 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 666. Up to 327 conditions per place. [2024-11-09 02:41:36,897 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 26 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2024-11-09 02:41:36,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 180 flow [2024-11-09 02:41:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:41:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:41:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-09 02:41:36,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2024-11-09 02:41:36,899 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 84 flow. Second operand 6 states and 60 transitions. [2024-11-09 02:41:36,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 180 flow [2024-11-09 02:41:36,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:36,902 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 146 flow [2024-11-09 02:41:36,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2024-11-09 02:41:36,903 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-09 02:41:36,903 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 146 flow [2024-11-09 02:41:36,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-11-09 02:41:36,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:36,904 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:36,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:41:37,108 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 [2024-11-09 02:41:37,109 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:37,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1411407270, now seen corresponding path program 2 times [2024-11-09 02:41:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090127039] [2024-11-09 02:41:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:41:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090127039] [2024-11-09 02:41:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090127039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518326835] [2024-11-09 02:41:37,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:41:37,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:37,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:37,368 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) [2024-11-09 02:41:37,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:41:37,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:41:37,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:37,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:41:37,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:38,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518326835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:38,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:38,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-09 02:41:38,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990975261] [2024-11-09 02:41:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:38,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:41:38,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:41:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:41:38,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:38,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 02:41:38,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:38,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:38,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:38,505 INFO L124 PetriNetUnfolderBase]: 244/430 cut-off events. [2024-11-09 02:41:38,506 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:41:38,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 430 events. 244/430 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1540 event pairs, 138 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 848. Up to 319 conditions per place. [2024-11-09 02:41:38,510 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 45 selfloop transitions, 1 changer transitions 9/56 dead transitions. [2024-11-09 02:41:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 56 transitions, 299 flow [2024-11-09 02:41:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:41:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:41:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-09 02:41:38,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2024-11-09 02:41:38,514 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 146 flow. Second operand 4 states and 61 transitions. [2024-11-09 02:41:38,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 56 transitions, 299 flow [2024-11-09 02:41:38,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 283 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:38,517 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 139 flow [2024-11-09 02:41:38,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=130, 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-09 02:41:38,518 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-11-09 02:41:38,518 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 139 flow [2024-11-09 02:41:38,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 02:41:38,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:38,519 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:38,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:41:38,719 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 [2024-11-09 02:41:38,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1556262304, now seen corresponding path program 3 times [2024-11-09 02:41:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344512018] [2024-11-09 02:41:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:41:38,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344512018] [2024-11-09 02:41:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344512018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874235510] [2024-11-09 02:41:38,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:41:38,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:38,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:38,943 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) [2024-11-09 02:41:38,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:41:39,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:41:39,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:39,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:41:39,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:39,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874235510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:39,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-09 02:41:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152539257] [2024-11-09 02:41:39,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:39,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:41:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:41:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:41:39,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:39,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 02:41:39,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:39,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:39,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:39,880 INFO L124 PetriNetUnfolderBase]: 268/487 cut-off events. [2024-11-09 02:41:39,880 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-09 02:41:39,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 487 events. 268/487 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1774 event pairs, 181 based on Foata normal form. 5/436 useless extension candidates. Maximal degree in co-relation 1048. Up to 393 conditions per place. [2024-11-09 02:41:39,884 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 45 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-11-09 02:41:39,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 288 flow [2024-11-09 02:41:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:41:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:41:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-09 02:41:39,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2024-11-09 02:41:39,890 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 139 flow. Second operand 4 states and 59 transitions. [2024-11-09 02:41:39,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 288 flow [2024-11-09 02:41:39,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 282 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:41:39,895 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 145 flow [2024-11-09 02:41:39,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-09 02:41:39,896 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-09 02:41:39,896 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 145 flow [2024-11-09 02:41:39,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 02:41:39,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:39,897 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:39,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:41:40,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:40,102 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:40,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2075253266, now seen corresponding path program 1 times [2024-11-09 02:41:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:40,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972185027] [2024-11-09 02:41:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972185027] [2024-11-09 02:41:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972185027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:40,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:41:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870728903] [2024-11-09 02:41:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:40,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:40,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:40,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-09 02:41:40,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:40,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:40,380 INFO L124 PetriNetUnfolderBase]: 192/347 cut-off events. [2024-11-09 02:41:40,382 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-09 02:41:40,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 347 events. 192/347 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1052 event pairs, 73 based on Foata normal form. 21/336 useless extension candidates. Maximal degree in co-relation 777. Up to 271 conditions per place. [2024-11-09 02:41:40,385 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 39 selfloop transitions, 2 changer transitions 5/47 dead transitions. [2024-11-09 02:41:40,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 263 flow [2024-11-09 02:41:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-09 02:41:40,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-11-09 02:41:40,392 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 145 flow. Second operand 3 states and 49 transitions. [2024-11-09 02:41:40,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 263 flow [2024-11-09 02:41:40,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 260 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 02:41:40,397 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 148 flow [2024-11-09 02:41:40,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-09 02:41:40,398 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-09 02:41:40,398 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 148 flow [2024-11-09 02:41:40,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-09 02:41:40,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:40,398 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:40,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:41:40,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:40,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1291654264, now seen corresponding path program 1 times [2024-11-09 02:41:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:40,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320043888] [2024-11-09 02:41:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:41:40,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:40,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320043888] [2024-11-09 02:41:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320043888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174254914] [2024-11-09 02:41:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:40,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:40,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:40,590 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) [2024-11-09 02:41:40,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:41:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:40,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:41:40,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:41:40,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:41:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174254914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:40,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:40,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-09 02:41:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830410338] [2024-11-09 02:41:40,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:40,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:41:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:41:40,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:41:40,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:40,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 148 flow. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2024-11-09 02:41:40,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:40,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:40,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:41,078 INFO L124 PetriNetUnfolderBase]: 171/306 cut-off events. [2024-11-09 02:41:41,079 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-09 02:41:41,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 306 events. 171/306 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 834 event pairs, 128 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 667. Up to 296 conditions per place. [2024-11-09 02:41:41,081 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 26 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2024-11-09 02:41:41,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 236 flow [2024-11-09 02:41:41,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:41:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:41:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2024-11-09 02:41:41,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24789915966386555 [2024-11-09 02:41:41,082 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 148 flow. Second operand 7 states and 59 transitions. [2024-11-09 02:41:41,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 236 flow [2024-11-09 02:41:41,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 228 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:41:41,084 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 186 flow [2024-11-09 02:41:41,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-09 02:41:41,085 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-11-09 02:41:41,085 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 186 flow [2024-11-09 02:41:41,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2024-11-09 02:41:41,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:41,085 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:41,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:41:41,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:41,286 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:41,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1270998506, now seen corresponding path program 2 times [2024-11-09 02:41:41,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:41,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850517470] [2024-11-09 02:41:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:41,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:41:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850517470] [2024-11-09 02:41:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850517470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:41:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531108715] [2024-11-09 02:41:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:41,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:41,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:41,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-09 02:41:41,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:41,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:41,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:41,598 INFO L124 PetriNetUnfolderBase]: 240/423 cut-off events. [2024-11-09 02:41:41,599 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 02:41:41,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 423 events. 240/423 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1309 event pairs, 139 based on Foata normal form. 16/386 useless extension candidates. Maximal degree in co-relation 885. Up to 306 conditions per place. [2024-11-09 02:41:41,602 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 47 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2024-11-09 02:41:41,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 317 flow [2024-11-09 02:41:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-09 02:41:41,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-11-09 02:41:41,604 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 186 flow. Second operand 3 states and 49 transitions. [2024-11-09 02:41:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 317 flow [2024-11-09 02:41:41,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 293 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:41:41,609 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 177 flow [2024-11-09 02:41:41,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-09 02:41:41,610 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-09 02:41:41,611 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 177 flow [2024-11-09 02:41:41,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-09 02:41:41,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:41,611 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:41,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:41:41,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:41,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1017083656, now seen corresponding path program 1 times [2024-11-09 02:41:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426198475] [2024-11-09 02:41:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 02:41:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426198475] [2024-11-09 02:41:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426198475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:41,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:41,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:41:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327708882] [2024-11-09 02:41:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:41,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:41,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:41,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-09 02:41:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:42,010 INFO L124 PetriNetUnfolderBase]: 333/579 cut-off events. [2024-11-09 02:41:42,010 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-09 02:41:42,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 579 events. 333/579 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1979 event pairs, 191 based on Foata normal form. 21/558 useless extension candidates. Maximal degree in co-relation 1313. Up to 423 conditions per place. [2024-11-09 02:41:42,014 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 48 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-09 02:41:42,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 320 flow [2024-11-09 02:41:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-09 02:41:42,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-11-09 02:41:42,015 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 177 flow. Second operand 3 states and 48 transitions. [2024-11-09 02:41:42,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 320 flow [2024-11-09 02:41:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:42,017 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 189 flow [2024-11-09 02:41:42,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-09 02:41:42,018 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-11-09 02:41:42,018 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 189 flow [2024-11-09 02:41:42,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-09 02:41:42,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:42,019 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 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] [2024-11-09 02:41:42,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:41:42,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:42,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1297553171, now seen corresponding path program 1 times [2024-11-09 02:41:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:42,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257417371] [2024-11-09 02:41:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:41:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257417371] [2024-11-09 02:41:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257417371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301727149] [2024-11-09 02:41:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:51,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:51,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:51,713 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) [2024-11-09 02:41:51,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:41:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:51,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 02:41:51,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:53,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:41:53,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 276 [2024-11-09 02:41:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:41:54,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:57,799 INFO L349 Elim1Store]: treesize reduction 13, result has 80.0 percent of original size [2024-11-09 02:41:57,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 393 treesize of output 356 [2024-11-09 02:41:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:41:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301727149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:59,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8, 8] total 34 [2024-11-09 02:41:59,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197654254] [2024-11-09 02:41:59,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:59,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 02:41:59,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:59,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 02:41:59,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 02:41:59,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:41:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 189 flow. Second operand has 34 states, 34 states have (on average 5.470588235294118) internal successors, (186), 34 states have internal predecessors, (186), 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) [2024-11-09 02:41:59,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:59,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:41:59,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:04,491 INFO L124 PetriNetUnfolderBase]: 839/1452 cut-off events. [2024-11-09 02:42:04,492 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2024-11-09 02:42:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1452 events. 839/1452 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6758 event pairs, 119 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 3460. Up to 276 conditions per place. [2024-11-09 02:42:04,501 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 128 selfloop transitions, 48 changer transitions 26/203 dead transitions. [2024-11-09 02:42:04,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1054 flow [2024-11-09 02:42:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 02:42:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-09 02:42:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 284 transitions. [2024-11-09 02:42:04,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2784313725490196 [2024-11-09 02:42:04,505 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 189 flow. Second operand 30 states and 284 transitions. [2024-11-09 02:42:04,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1054 flow [2024-11-09 02:42:04,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 203 transitions, 1035 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:04,509 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 476 flow [2024-11-09 02:42:04,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=476, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-09 02:42:04,511 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-11-09 02:42:04,511 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 476 flow [2024-11-09 02:42:04,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.470588235294118) internal successors, (186), 34 states have internal predecessors, (186), 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) [2024-11-09 02:42:04,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:04,512 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 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] [2024-11-09 02:42:04,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:04,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:04,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1315806203, now seen corresponding path program 2 times [2024-11-09 02:42:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477999699] [2024-11-09 02:42:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477999699] [2024-11-09 02:42:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477999699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923097578] [2024-11-09 02:42:13,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:13,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:13,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:42:13,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:13,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:13,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 02:42:13,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:14,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:42:14,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 326 treesize of output 274 [2024-11-09 02:42:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:42:15,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:18,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:42:18,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 416 treesize of output 370 [2024-11-09 02:42:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:42:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923097578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:19,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 8] total 37 [2024-11-09 02:42:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378938109] [2024-11-09 02:42:19,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:19,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 02:42:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 02:42:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 02:42:19,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:42:19,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 476 flow. Second operand has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 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) [2024-11-09 02:42:19,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:19,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:42:19,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:22,199 INFO L124 PetriNetUnfolderBase]: 1026/1819 cut-off events. [2024-11-09 02:42:22,200 INFO L125 PetriNetUnfolderBase]: For 1999/1999 co-relation queries the response was YES. [2024-11-09 02:42:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 1819 events. 1026/1819 cut-off events. For 1999/1999 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9006 event pairs, 295 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 5053. Up to 672 conditions per place. [2024-11-09 02:42:22,211 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 102 selfloop transitions, 48 changer transitions 10/161 dead transitions. [2024-11-09 02:42:22,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 161 transitions, 1111 flow [2024-11-09 02:42:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 02:42:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 02:42:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions. [2024-11-09 02:42:22,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24387254901960784 [2024-11-09 02:42:22,214 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 476 flow. Second operand 24 states and 199 transitions. [2024-11-09 02:42:22,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 161 transitions, 1111 flow [2024-11-09 02:42:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 161 transitions, 998 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-11-09 02:42:22,234 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 628 flow [2024-11-09 02:42:22,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=628, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-11-09 02:42:22,236 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-11-09 02:42:22,236 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 628 flow [2024-11-09 02:42:22,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 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) [2024-11-09 02:42:22,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:22,236 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 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] [2024-11-09 02:42:22,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:22,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:22,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:22,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1324081233, now seen corresponding path program 3 times [2024-11-09 02:42:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338353719] [2024-11-09 02:42:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338353719] [2024-11-09 02:42:29,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338353719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630478290] [2024-11-09 02:42:29,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:29,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:29,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:42:29,569 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:42:29,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:29,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 02:42:29,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:30,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:42:30,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 326 treesize of output 274 [2024-11-09 02:42:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:42:31,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:33,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:42:33,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 356 [2024-11-09 02:42:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:42:34,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630478290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:34,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 8] total 38 [2024-11-09 02:42:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135216755] [2024-11-09 02:42:34,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:34,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 02:42:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 02:42:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 02:42:34,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-09 02:42:34,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 628 flow. Second operand has 38 states, 38 states have (on average 5.421052631578948) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:34,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:34,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-09 02:42:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand