./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:45:44,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:45:44,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:45:44,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:45:44,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:45:44,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:45:44,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:45:44,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:45:44,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:45:44,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:45:44,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:45:44,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:45:44,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:45:44,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:45:44,560 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:45:44,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:45:44,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:45:44,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:45:44,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:45:44,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:45:44,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:45:44,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:45:44,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:45:44,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:45:44,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:45:44,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:45:44,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:45:44,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:45:44,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:45:44,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:45:44,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:45:44,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:45:44,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:45:44,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:45:44,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:45:44,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:45:44,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:45:44,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:45:44,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:45:44,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:45:44,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:45:44,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:45:44,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2024-11-20 09:45:44,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:45:44,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:45:44,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:45:44,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:45:44,862 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:45:44,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-11-20 09:45:46,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:45:46,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:45:46,544 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-11-20 09:45:46,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f754f6025/b7a20a90cc644218bf2897d86ddb19bb/FLAG461764917 [2024-11-20 09:45:46,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f754f6025/b7a20a90cc644218bf2897d86ddb19bb [2024-11-20 09:45:46,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:45:46,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:45:46,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:45:46,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:45:46,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:45:46,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:46,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6640cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46, skipping insertion in model container [2024-11-20 09:45:46,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:46,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:45:46,825 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/test-context1.wvr.c[2459,2472] [2024-11-20 09:45:46,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:45:46,900 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:45:46,948 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/test-context1.wvr.c[2459,2472] [2024-11-20 09:45:46,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:45:46,973 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:45:46,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46 WrapperNode [2024-11-20 09:45:46,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:45:46,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:45:46,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:45:46,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:45:46,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:46,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,021 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 127 [2024-11-20 09:45:47,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:45:47,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:45:47,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:45:47,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:45:47,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,060 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-20 09:45:47,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:45:47,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:45:47,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:45:47,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:45:47,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (1/1) ... [2024-11-20 09:45:47,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:45:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:47,128 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) [2024-11-20 09:45:47,134 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 [2024-11-20 09:45:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:45:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:45:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:45:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:45:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:45:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:45:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:45:47,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:45:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:45:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:45:47,180 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:45:47,271 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:45:47,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:45:47,474 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:45:47,474 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:45:47,670 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:45:47,670 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 09:45:47,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:45:47 BoogieIcfgContainer [2024-11-20 09:45:47,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:45:47,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:45:47,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:45:47,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:45:47,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:45:46" (1/3) ... [2024-11-20 09:45:47,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10abc39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:45:47, skipping insertion in model container [2024-11-20 09:45:47,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:46" (2/3) ... [2024-11-20 09:45:47,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10abc39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:45:47, skipping insertion in model container [2024-11-20 09:45:47,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:45:47" (3/3) ... [2024-11-20 09:45:47,677 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-11-20 09:45:47,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:45:47,690 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:45:47,690 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:45:47,737 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 09:45:47,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 70 flow [2024-11-20 09:45:47,809 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-20 09:45:47,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 09:45:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 5/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-20 09:45:47,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 70 flow [2024-11-20 09:45:47,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 25 transitions, 62 flow [2024-11-20 09:45:47,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:45:47,834 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;@6334a7ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:45:47,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-20 09:45:47,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:45:47,849 INFO L124 PetriNetUnfolderBase]: 5/24 cut-off events. [2024-11-20 09:45:47,849 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 09:45:47,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:47,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:47,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:47,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1826755679, now seen corresponding path program 1 times [2024-11-20 09:45:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937034801] [2024-11-20 09:45:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937034801] [2024-11-20 09:45:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937034801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:45:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:45:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:45:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699374784] [2024-11-20 09:45:48,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:45:48,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 09:45:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 09:45:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 09:45:48,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:48,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-20 09:45:48,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:48,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:48,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:48,224 INFO L124 PetriNetUnfolderBase]: 122/217 cut-off events. [2024-11-20 09:45:48,225 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 09:45:48,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 217 events. 122/217 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 721 event pairs, 94 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 405. Up to 214 conditions per place. [2024-11-20 09:45:48,230 INFO L140 encePairwiseOnDemand]: 26/28 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-20 09:45:48,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 98 flow [2024-11-20 09:45:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 09:45:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-20 09:45:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2024-11-20 09:45:48,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-20 09:45:48,246 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 62 flow. Second operand 2 states and 32 transitions. [2024-11-20 09:45:48,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 98 flow [2024-11-20 09:45:48,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 09:45:48,251 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 50 flow [2024-11-20 09:45:48,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2024-11-20 09:45:48,256 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2024-11-20 09:45:48,257 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 50 flow [2024-11-20 09:45:48,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-20 09:45:48,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:48,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:48,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:45:48,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash 5065408, now seen corresponding path program 1 times [2024-11-20 09:45:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731569695] [2024-11-20 09:45:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731569695] [2024-11-20 09:45:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731569695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:45:48,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:45:48,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:45:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615866415] [2024-11-20 09:45:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:45:48,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:45:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:45:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:45:48,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:48,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 50 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) [2024-11-20 09:45:48,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:48,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:48,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:48,593 INFO L124 PetriNetUnfolderBase]: 203/353 cut-off events. [2024-11-20 09:45:48,593 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 09:45:48,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 353 events. 203/353 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1268 event pairs, 82 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 709. Up to 176 conditions per place. [2024-11-20 09:45:48,599 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 28 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2024-11-20 09:45:48,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 144 flow [2024-11-20 09:45:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:45:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:45:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-20 09:45:48,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-20 09:45:48,600 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 50 flow. Second operand 3 states and 49 transitions. [2024-11-20 09:45:48,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 144 flow [2024-11-20 09:45:48,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:45:48,603 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 62 flow [2024-11-20 09:45:48,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-11-20 09:45:48,605 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-20 09:45:48,605 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 62 flow [2024-11-20 09:45:48,606 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) [2024-11-20 09:45:48,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:48,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:48,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:45:48,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:48,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash -576454128, now seen corresponding path program 1 times [2024-11-20 09:45:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:48,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451720292] [2024-11-20 09:45:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451720292] [2024-11-20 09:45:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451720292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:45:48,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:45:48,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:45:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726858213] [2024-11-20 09:45:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:45:48,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:45:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:45:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:45:48,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:48,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 62 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) [2024-11-20 09:45:48,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:48,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:48,869 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-11-20 09:45:48,870 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-20 09:45:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 446 events. 251/446 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1647 event pairs, 113 based on Foata normal form. 11/386 useless extension candidates. Maximal degree in co-relation 934. Up to 306 conditions per place. [2024-11-20 09:45:48,876 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 27 selfloop transitions, 2 changer transitions 6/38 dead transitions. [2024-11-20 09:45:48,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 163 flow [2024-11-20 09:45:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:45:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:45:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-20 09:45:48,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-20 09:45:48,878 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 62 flow. Second operand 3 states and 50 transitions. [2024-11-20 09:45:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 163 flow [2024-11-20 09:45:48,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:45:48,879 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2024-11-20 09:45:48,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-20 09:45:48,880 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-11-20 09:45:48,880 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2024-11-20 09:45:48,880 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) [2024-11-20 09:45:48,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:48,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:48,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:45:48,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:48,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -685549057, now seen corresponding path program 1 times [2024-11-20 09:45:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213886070] [2024-11-20 09:45:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213886070] [2024-11-20 09:45:49,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213886070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:45:49,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:45:49,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:45:49,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861844192] [2024-11-20 09:45:49,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:45:49,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:45:49,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:45:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:45:49,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:49,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-20 09:45:49,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:49,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:49,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:49,206 INFO L124 PetriNetUnfolderBase]: 319/585 cut-off events. [2024-11-20 09:45:49,207 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-20 09:45:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 585 events. 319/585 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2472 event pairs, 285 based on Foata normal form. 12/502 useless extension candidates. Maximal degree in co-relation 1262. Up to 443 conditions per place. [2024-11-20 09:45:49,210 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 21 selfloop transitions, 2 changer transitions 15/41 dead transitions. [2024-11-20 09:45:49,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 184 flow [2024-11-20 09:45:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:45:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:45:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-11-20 09:45:49,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-11-20 09:45:49,211 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 57 transitions. [2024-11-20 09:45:49,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 184 flow [2024-11-20 09:45:49,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:45:49,213 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 84 flow [2024-11-20 09:45:49,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-20 09:45:49,214 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2024-11-20 09:45:49,215 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 84 flow [2024-11-20 09:45:49,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-20 09:45:49,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:49,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:49,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:45:49,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:49,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1526105098, now seen corresponding path program 1 times [2024-11-20 09:45:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:49,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788981022] [2024-11-20 09:45:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:49,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:45:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788981022] [2024-11-20 09:45:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788981022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536116057] [2024-11-20 09:45:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:49,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:49,601 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) [2024-11-20 09:45:49,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:45:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:49,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:45:49,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:45:49,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:49,953 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:45:49,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-11-20 09:45:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:45:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536116057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:50,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-20 09:45:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30415391] [2024-11-20 09:45:50,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:50,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 09:45:50,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 09:45:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:45:50,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:50,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-11-20 09:45:50,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:50,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:50,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:50,299 INFO L124 PetriNetUnfolderBase]: 331/583 cut-off events. [2024-11-20 09:45:50,299 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-20 09:45:50,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 583 events. 331/583 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2148 event pairs, 68 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 1281. Up to 157 conditions per place. [2024-11-20 09:45:50,303 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 44 selfloop transitions, 5 changer transitions 12/64 dead transitions. [2024-11-20 09:45:50,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 64 transitions, 295 flow [2024-11-20 09:45:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:45:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:45:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-20 09:45:50,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-20 09:45:50,311 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 84 flow. Second operand 6 states and 91 transitions. [2024-11-20 09:45:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 64 transitions, 295 flow [2024-11-20 09:45:50,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 64 transitions, 289 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 09:45:50,315 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 98 flow [2024-11-20 09:45:50,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-20 09:45:50,317 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2024-11-20 09:45:50,317 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 98 flow [2024-11-20 09:45:50,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-11-20 09:45:50,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:50,319 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:50,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:45:50,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:50,521 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:50,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:50,522 INFO L85 PathProgramCache]: Analyzing trace with hash -921432716, now seen corresponding path program 2 times [2024-11-20 09:45:50,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928227866] [2024-11-20 09:45:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:45:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928227866] [2024-11-20 09:45:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928227866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898737824] [2024-11-20 09:45:50,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:45:50,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:50,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:50,620 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) [2024-11-20 09:45:50,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:45:50,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:45:50,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:45:50,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:45:50,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:45:50,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:45:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898737824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:51,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2024-11-20 09:45:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095683906] [2024-11-20 09:45:51,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:51,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:45:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:45:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:45:51,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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) [2024-11-20 09:45:51,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:51,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:51,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:51,425 INFO L124 PetriNetUnfolderBase]: 948/1687 cut-off events. [2024-11-20 09:45:51,425 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2024-11-20 09:45:51,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 1687 events. 948/1687 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8087 event pairs, 348 based on Foata normal form. 43/1465 useless extension candidates. Maximal degree in co-relation 3761. Up to 462 conditions per place. [2024-11-20 09:45:51,432 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 49 selfloop transitions, 9 changer transitions 42/103 dead transitions. [2024-11-20 09:45:51,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 103 transitions, 512 flow [2024-11-20 09:45:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 09:45:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 09:45:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-20 09:45:51,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-11-20 09:45:51,435 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 98 flow. Second operand 9 states and 143 transitions. [2024-11-20 09:45:51,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 103 transitions, 512 flow [2024-11-20 09:45:51,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 103 transitions, 495 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-20 09:45:51,442 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 170 flow [2024-11-20 09:45:51,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-11-20 09:45:51,443 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2024-11-20 09:45:51,443 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 170 flow [2024-11-20 09:45:51,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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) [2024-11-20 09:45:51,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:51,444 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:51,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 09:45:51,646 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,SelfDestructingSolverStorable5 [2024-11-20 09:45:51,647 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:51,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 312778938, now seen corresponding path program 3 times [2024-11-20 09:45:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:51,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116035000] [2024-11-20 09:45:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116035000] [2024-11-20 09:45:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116035000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609125725] [2024-11-20 09:45:52,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:45:52,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:52,161 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) [2024-11-20 09:45:52,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:45:52,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-20 09:45:52,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:45:52,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 09:45:52,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:52,535 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:45:52,536 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 26 treesize of output 10 [2024-11-20 09:45:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:52,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:52,604 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:45:52,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-11-20 09:45:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:52,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609125725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:52,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:52,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-20 09:45:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244304329] [2024-11-20 09:45:52,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:52,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 09:45:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 09:45:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-20 09:45:52,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:52,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 170 flow. Second operand has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 22 states have internal predecessors, (179), 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) [2024-11-20 09:45:52,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:52,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:52,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:54,075 INFO L124 PetriNetUnfolderBase]: 2375/4137 cut-off events. [2024-11-20 09:45:54,075 INFO L125 PetriNetUnfolderBase]: For 2950/2950 co-relation queries the response was YES. [2024-11-20 09:45:54,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 4137 events. 2375/4137 cut-off events. For 2950/2950 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22913 event pairs, 448 based on Foata normal form. 21/3511 useless extension candidates. Maximal degree in co-relation 10107. Up to 750 conditions per place. [2024-11-20 09:45:54,097 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 138 selfloop transitions, 28 changer transitions 79/248 dead transitions. [2024-11-20 09:45:54,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 248 transitions, 1363 flow [2024-11-20 09:45:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 09:45:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 09:45:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 340 transitions. [2024-11-20 09:45:54,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-20 09:45:54,100 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 170 flow. Second operand 21 states and 340 transitions. [2024-11-20 09:45:54,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 248 transitions, 1363 flow [2024-11-20 09:45:54,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 248 transitions, 1327 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-20 09:45:54,109 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 445 flow [2024-11-20 09:45:54,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=445, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-20 09:45:54,110 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 43 predicate places. [2024-11-20 09:45:54,110 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 445 flow [2024-11-20 09:45:54,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 22 states have internal predecessors, (179), 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) [2024-11-20 09:45:54,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:54,111 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:54,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:45:54,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:54,315 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:54,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1078660162, now seen corresponding path program 4 times [2024-11-20 09:45:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:54,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102310206] [2024-11-20 09:45:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:45:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102310206] [2024-11-20 09:45:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102310206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716855031] [2024-11-20 09:45:54,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:45:54,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:54,824 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) [2024-11-20 09:45:54,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:45:54,896 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:45:54,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:45:54,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 09:45:54,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:45:54,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:55,025 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:45:55,026 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 28 treesize of output 11 [2024-11-20 09:45:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:45:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716855031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:55,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:55,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2024-11-20 09:45:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285337561] [2024-11-20 09:45:55,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:55,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:45:55,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:45:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:45:55,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 445 flow. Second operand has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 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) [2024-11-20 09:45:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:55,782 INFO L124 PetriNetUnfolderBase]: 2477/4291 cut-off events. [2024-11-20 09:45:55,782 INFO L125 PetriNetUnfolderBase]: For 8134/8134 co-relation queries the response was YES. [2024-11-20 09:45:55,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 4291 events. 2477/4291 cut-off events. For 8134/8134 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23219 event pairs, 428 based on Foata normal form. 7/3628 useless extension candidates. Maximal degree in co-relation 11764. Up to 875 conditions per place. [2024-11-20 09:45:55,811 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 99 selfloop transitions, 31 changer transitions 39/172 dead transitions. [2024-11-20 09:45:55,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 172 transitions, 1210 flow [2024-11-20 09:45:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 09:45:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 09:45:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-11-20 09:45:55,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-20 09:45:55,813 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 445 flow. Second operand 14 states and 216 transitions. [2024-11-20 09:45:55,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 172 transitions, 1210 flow [2024-11-20 09:45:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 172 transitions, 1078 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-11-20 09:45:55,841 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 550 flow [2024-11-20 09:45:55,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=550, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-11-20 09:45:55,843 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 54 predicate places. [2024-11-20 09:45:55,844 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 550 flow [2024-11-20 09:45:55,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 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) [2024-11-20 09:45:55,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:55,844 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:55,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:45:56,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:56,045 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:56,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash 427032896, now seen corresponding path program 5 times [2024-11-20 09:45:56,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860567560] [2024-11-20 09:45:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:45:56,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:56,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860567560] [2024-11-20 09:45:56,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860567560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:56,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024382512] [2024-11-20 09:45:56,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:45:56,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:56,158 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) [2024-11-20 09:45:56,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:45:56,236 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 09:45:56,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:45:56,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:45:56,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:45:56,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:45:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024382512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:56,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-20 09:45:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973470887] [2024-11-20 09:45:56,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:56,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:45:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:56,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:45:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:45:56,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:56,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 550 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:45:56,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:56,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:56,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:57,180 INFO L124 PetriNetUnfolderBase]: 4762/8226 cut-off events. [2024-11-20 09:45:57,181 INFO L125 PetriNetUnfolderBase]: For 15350/15350 co-relation queries the response was YES. [2024-11-20 09:45:57,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22356 conditions, 8226 events. 4762/8226 cut-off events. For 15350/15350 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 51034 event pairs, 1467 based on Foata normal form. 55/6999 useless extension candidates. Maximal degree in co-relation 22329. Up to 3044 conditions per place. [2024-11-20 09:45:57,233 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 88 selfloop transitions, 44 changer transitions 0/135 dead transitions. [2024-11-20 09:45:57,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 135 transitions, 1352 flow [2024-11-20 09:45:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:45:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:45:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-20 09:45:57,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-20 09:45:57,234 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 550 flow. Second operand 5 states and 93 transitions. [2024-11-20 09:45:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 135 transitions, 1352 flow [2024-11-20 09:45:57,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 135 transitions, 1138 flow, removed 73 selfloop flow, removed 12 redundant places. [2024-11-20 09:45:57,259 INFO L231 Difference]: Finished difference. Result has 76 places, 93 transitions, 937 flow [2024-11-20 09:45:57,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=937, PETRI_PLACES=76, PETRI_TRANSITIONS=93} [2024-11-20 09:45:57,261 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 49 predicate places. [2024-11-20 09:45:57,261 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 937 flow [2024-11-20 09:45:57,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:45:57,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:57,261 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:57,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:45:57,462 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 [2024-11-20 09:45:57,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:57,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1120363923, now seen corresponding path program 6 times [2024-11-20 09:45:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564597693] [2024-11-20 09:45:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:45:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 09:45:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:45:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564597693] [2024-11-20 09:45:57,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564597693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:45:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640067878] [2024-11-20 09:45:57,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:45:57,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:45:57,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:45:57,694 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) [2024-11-20 09:45:57,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:45:57,774 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-20 09:45:57,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:45:57,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 09:45:57,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:45:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 09:45:57,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:45:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 09:45:58,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640067878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:45:58,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:45:58,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-20 09:45:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187596548] [2024-11-20 09:45:58,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:45:58,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 09:45:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:45:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 09:45:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-20 09:45:58,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:45:58,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 937 flow. Second operand has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 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) [2024-11-20 09:45:58,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:45:58,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:45:58,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:45:59,177 INFO L124 PetriNetUnfolderBase]: 2982/5200 cut-off events. [2024-11-20 09:45:59,177 INFO L125 PetriNetUnfolderBase]: For 10971/10971 co-relation queries the response was YES. [2024-11-20 09:45:59,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 5200 events. 2982/5200 cut-off events. For 10971/10971 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 30349 event pairs, 2389 based on Foata normal form. 32/4417 useless extension candidates. Maximal degree in co-relation 14511. Up to 4511 conditions per place. [2024-11-20 09:45:59,204 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 53 selfloop transitions, 4 changer transitions 67/127 dead transitions. [2024-11-20 09:45:59,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 1010 flow [2024-11-20 09:45:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:45:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:45:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-11-20 09:45:59,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107142857142857 [2024-11-20 09:45:59,206 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 937 flow. Second operand 10 states and 143 transitions. [2024-11-20 09:45:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 1010 flow [2024-11-20 09:45:59,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 929 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-20 09:45:59,333 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 506 flow [2024-11-20 09:45:59,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=506, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-20 09:45:59,334 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2024-11-20 09:45:59,335 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 506 flow [2024-11-20 09:45:59,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 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) [2024-11-20 09:45:59,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:45:59,335 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:45:59,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 09:45:59,539 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 [2024-11-20 09:45:59,540 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:45:59,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:45:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1883401274, now seen corresponding path program 7 times [2024-11-20 09:45:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:45:59,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737616100] [2024-11-20 09:45:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:45:59,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:45:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:46:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737616100] [2024-11-20 09:46:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737616100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559020332] [2024-11-20 09:46:00,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:46:00,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:00,017 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) [2024-11-20 09:46:00,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:46:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:00,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 09:46:00,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 09:46:00,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:00,427 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:46:00,427 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 28 treesize of output 11 [2024-11-20 09:46:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 09:46:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559020332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:00,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2024-11-20 09:46:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672573512] [2024-11-20 09:46:00,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:00,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 09:46:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 09:46:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-11-20 09:46:00,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:00,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 506 flow. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 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) [2024-11-20 09:46:00,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:00,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:00,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:02,009 INFO L124 PetriNetUnfolderBase]: 4136/7098 cut-off events. [2024-11-20 09:46:02,009 INFO L125 PetriNetUnfolderBase]: For 7950/7950 co-relation queries the response was YES. [2024-11-20 09:46:02,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18489 conditions, 7098 events. 4136/7098 cut-off events. For 7950/7950 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 41877 event pairs, 320 based on Foata normal form. 12/6007 useless extension candidates. Maximal degree in co-relation 18464. Up to 1300 conditions per place. [2024-11-20 09:46:02,060 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 154 selfloop transitions, 61 changer transitions 78/296 dead transitions. [2024-11-20 09:46:02,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 296 transitions, 1834 flow [2024-11-20 09:46:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 09:46:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 09:46:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 393 transitions. [2024-11-20 09:46:02,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848214285714286 [2024-11-20 09:46:02,062 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 506 flow. Second operand 24 states and 393 transitions. [2024-11-20 09:46:02,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 296 transitions, 1834 flow [2024-11-20 09:46:02,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 296 transitions, 1762 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-11-20 09:46:02,096 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 915 flow [2024-11-20 09:46:02,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=915, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-11-20 09:46:02,097 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 70 predicate places. [2024-11-20 09:46:02,097 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 915 flow [2024-11-20 09:46:02,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 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) [2024-11-20 09:46:02,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:02,097 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:02,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 09:46:02,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:02,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:02,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash -384876044, now seen corresponding path program 8 times [2024-11-20 09:46:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:02,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298712739] [2024-11-20 09:46:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 09:46:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298712739] [2024-11-20 09:46:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298712739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721444039] [2024-11-20 09:46:02,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:46:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:02,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:02,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:46:02,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:46:02,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:02,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 09:46:02,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 09:46:02,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 09:46:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721444039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:03,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:03,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-20 09:46:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657986058] [2024-11-20 09:46:03,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:03,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:46:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:46:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:46:03,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:03,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 915 flow. Second operand has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 26 states have internal predecessors, (216), 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) [2024-11-20 09:46:03,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:03,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:03,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:04,427 INFO L124 PetriNetUnfolderBase]: 8178/14209 cut-off events. [2024-11-20 09:46:04,427 INFO L125 PetriNetUnfolderBase]: For 24060/24060 co-relation queries the response was YES. [2024-11-20 09:46:04,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37256 conditions, 14209 events. 8178/14209 cut-off events. For 24060/24060 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 100871 event pairs, 5133 based on Foata normal form. 242/12206 useless extension candidates. Maximal degree in co-relation 37222. Up to 7092 conditions per place. [2024-11-20 09:46:04,503 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 75 selfloop transitions, 5 changer transitions 99/182 dead transitions. [2024-11-20 09:46:04,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2028 flow [2024-11-20 09:46:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:46:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:46:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-11-20 09:46:04,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-20 09:46:04,505 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 915 flow. Second operand 10 states and 130 transitions. [2024-11-20 09:46:04,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2028 flow [2024-11-20 09:46:04,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 182 transitions, 1737 flow, removed 35 selfloop flow, removed 13 redundant places. [2024-11-20 09:46:04,620 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 869 flow [2024-11-20 09:46:04,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=869, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-20 09:46:04,621 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 71 predicate places. [2024-11-20 09:46:04,622 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 869 flow [2024-11-20 09:46:04,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 26 states have internal predecessors, (216), 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) [2024-11-20 09:46:04,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:04,622 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:04,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 09:46:04,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 09:46:04,826 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:04,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -774948251, now seen corresponding path program 9 times [2024-11-20 09:46:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666004234] [2024-11-20 09:46:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 09:46:05,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666004234] [2024-11-20 09:46:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666004234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441112868] [2024-11-20 09:46:05,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:46:05,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:05,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:05,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:05,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:46:05,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-20 09:46:05,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:05,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 09:46:05,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 09:46:05,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 09:46:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441112868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:05,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-20 09:46:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246468148] [2024-11-20 09:46:05,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:05,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:46:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:46:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:46:05,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:05,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 869 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:46:05,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:05,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:06,562 INFO L124 PetriNetUnfolderBase]: 7724/13225 cut-off events. [2024-11-20 09:46:06,562 INFO L125 PetriNetUnfolderBase]: For 19322/19322 co-relation queries the response was YES. [2024-11-20 09:46:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34697 conditions, 13225 events. 7724/13225 cut-off events. For 19322/19322 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 87546 event pairs, 1656 based on Foata normal form. 22/11197 useless extension candidates. Maximal degree in co-relation 34660. Up to 3528 conditions per place. [2024-11-20 09:46:06,621 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 102 selfloop transitions, 81 changer transitions 0/186 dead transitions. [2024-11-20 09:46:06,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 186 transitions, 2089 flow [2024-11-20 09:46:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:46:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:46:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-20 09:46:06,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-20 09:46:06,624 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 869 flow. Second operand 6 states and 114 transitions. [2024-11-20 09:46:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 186 transitions, 2089 flow [2024-11-20 09:46:06,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 186 transitions, 1903 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-11-20 09:46:06,742 INFO L231 Difference]: Finished difference. Result has 92 places, 130 transitions, 1510 flow [2024-11-20 09:46:06,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1510, PETRI_PLACES=92, PETRI_TRANSITIONS=130} [2024-11-20 09:46:06,743 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 65 predicate places. [2024-11-20 09:46:06,743 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 130 transitions, 1510 flow [2024-11-20 09:46:06,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:46:06,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:06,743 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:06,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 09:46:06,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 09:46:06,944 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:06,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1980071336, now seen corresponding path program 10 times [2024-11-20 09:46:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786997348] [2024-11-20 09:46:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:46:07,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786997348] [2024-11-20 09:46:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786997348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140352571] [2024-11-20 09:46:07,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:46:07,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:07,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:07,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:46:07,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:46:07,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:07,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-20 09:46:07,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:46:08,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:08,109 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:46:08,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-11-20 09:46:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 09:46:08,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140352571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:08,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:08,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 10] total 35 [2024-11-20 09:46:08,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131628225] [2024-11-20 09:46:08,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:08,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-20 09:46:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-20 09:46:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 09:46:08,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:08,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 130 transitions, 1510 flow. Second operand has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 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) [2024-11-20 09:46:08,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:08,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:08,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:11,913 INFO L124 PetriNetUnfolderBase]: 13018/22293 cut-off events. [2024-11-20 09:46:11,913 INFO L125 PetriNetUnfolderBase]: For 36748/36748 co-relation queries the response was YES. [2024-11-20 09:46:11,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60213 conditions, 22293 events. 13018/22293 cut-off events. For 36748/36748 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 157557 event pairs, 893 based on Foata normal form. 16/18852 useless extension candidates. Maximal degree in co-relation 60179. Up to 4100 conditions per place. [2024-11-20 09:46:12,024 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 405 selfloop transitions, 195 changer transitions 117/720 dead transitions. [2024-11-20 09:46:12,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 720 transitions, 5642 flow [2024-11-20 09:46:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-20 09:46:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-20 09:46:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 848 transitions. [2024-11-20 09:46:12,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180758017492711 [2024-11-20 09:46:12,036 INFO L175 Difference]: Start difference. First operand has 92 places, 130 transitions, 1510 flow. Second operand 49 states and 848 transitions. [2024-11-20 09:46:12,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 720 transitions, 5642 flow [2024-11-20 09:46:12,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 720 transitions, 5502 flow, removed 70 selfloop flow, removed 0 redundant places. [2024-11-20 09:46:12,206 INFO L231 Difference]: Finished difference. Result has 157 places, 229 transitions, 3020 flow [2024-11-20 09:46:12,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3020, PETRI_PLACES=157, PETRI_TRANSITIONS=229} [2024-11-20 09:46:12,207 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 130 predicate places. [2024-11-20 09:46:12,207 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 229 transitions, 3020 flow [2024-11-20 09:46:12,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 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) [2024-11-20 09:46:12,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:12,208 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:12,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 09:46:12,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 09:46:12,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:12,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2127821118, now seen corresponding path program 11 times [2024-11-20 09:46:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620210888] [2024-11-20 09:46:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:46:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620210888] [2024-11-20 09:46:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620210888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394834056] [2024-11-20 09:46:13,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:46:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:13,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:13,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 09:46:13,325 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-20 09:46:13,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:13,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 09:46:13,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:46:13,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:13,861 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:46:13,862 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 28 treesize of output 11 [2024-11-20 09:46:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 09:46:14,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394834056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:14,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:14,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 10] total 34 [2024-11-20 09:46:14,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918731855] [2024-11-20 09:46:14,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:14,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 09:46:14,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 09:46:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 09:46:14,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:14,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 229 transitions, 3020 flow. Second operand has 35 states, 35 states have (on average 8.314285714285715) internal successors, (291), 35 states have internal predecessors, (291), 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) [2024-11-20 09:46:14,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:14,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:14,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:19,114 INFO L124 PetriNetUnfolderBase]: 16447/28142 cut-off events. [2024-11-20 09:46:19,115 INFO L125 PetriNetUnfolderBase]: For 66275/66275 co-relation queries the response was YES. [2024-11-20 09:46:19,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78825 conditions, 28142 events. 16447/28142 cut-off events. For 66275/66275 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 208136 event pairs, 1220 based on Foata normal form. 1/23783 useless extension candidates. Maximal degree in co-relation 78773. Up to 5175 conditions per place. [2024-11-20 09:46:19,306 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 334 selfloop transitions, 269 changer transitions 93/699 dead transitions. [2024-11-20 09:46:19,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 699 transitions, 6817 flow [2024-11-20 09:46:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-20 09:46:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-20 09:46:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 687 transitions. [2024-11-20 09:46:19,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5984320557491289 [2024-11-20 09:46:19,310 INFO L175 Difference]: Start difference. First operand has 157 places, 229 transitions, 3020 flow. Second operand 41 states and 687 transitions. [2024-11-20 09:46:19,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 699 transitions, 6817 flow [2024-11-20 09:46:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 699 transitions, 6234 flow, removed 96 selfloop flow, removed 12 redundant places. [2024-11-20 09:46:19,602 INFO L231 Difference]: Finished difference. Result has 186 places, 290 transitions, 3718 flow [2024-11-20 09:46:19,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3718, PETRI_PLACES=186, PETRI_TRANSITIONS=290} [2024-11-20 09:46:19,603 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 159 predicate places. [2024-11-20 09:46:19,603 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 290 transitions, 3718 flow [2024-11-20 09:46:19,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.314285714285715) internal successors, (291), 35 states have internal predecessors, (291), 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) [2024-11-20 09:46:19,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:19,604 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:19,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 09:46:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 09:46:19,804 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:19,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash -748279792, now seen corresponding path program 12 times [2024-11-20 09:46:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000450458] [2024-11-20 09:46:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:46:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000450458] [2024-11-20 09:46:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000450458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144017860] [2024-11-20 09:46:20,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:46:20,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:20,330 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:20,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 09:46:20,534 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-20 09:46:20,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:20,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 09:46:20,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:46:20,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:21,034 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:46:21,035 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 28 treesize of output 11 [2024-11-20 09:46:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 09:46:21,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144017860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:21,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:21,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 8] total 32 [2024-11-20 09:46:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694759529] [2024-11-20 09:46:21,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:21,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 09:46:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 09:46:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 09:46:21,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:21,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 290 transitions, 3718 flow. Second operand has 33 states, 33 states have (on average 8.515151515151516) internal successors, (281), 33 states have internal predecessors, (281), 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) [2024-11-20 09:46:21,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:21,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:21,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:29,006 INFO L124 PetriNetUnfolderBase]: 25705/43942 cut-off events. [2024-11-20 09:46:29,007 INFO L125 PetriNetUnfolderBase]: For 128341/128341 co-relation queries the response was YES. [2024-11-20 09:46:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121701 conditions, 43942 events. 25705/43942 cut-off events. For 128341/128341 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 343648 event pairs, 2318 based on Foata normal form. 47/37193 useless extension candidates. Maximal degree in co-relation 121647. Up to 8075 conditions per place. [2024-11-20 09:46:29,530 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 660 selfloop transitions, 427 changer transitions 171/1261 dead transitions. [2024-11-20 09:46:29,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1261 transitions, 11733 flow [2024-11-20 09:46:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-20 09:46:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-11-20 09:46:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1340 transitions. [2024-11-20 09:46:29,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-20 09:46:29,533 INFO L175 Difference]: Start difference. First operand has 186 places, 290 transitions, 3718 flow. Second operand 75 states and 1340 transitions. [2024-11-20 09:46:29,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1261 transitions, 11733 flow [2024-11-20 09:46:30,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1261 transitions, 11498 flow, removed 24 selfloop flow, removed 14 redundant places. [2024-11-20 09:46:30,138 INFO L231 Difference]: Finished difference. Result has 274 places, 464 transitions, 6892 flow [2024-11-20 09:46:30,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=6892, PETRI_PLACES=274, PETRI_TRANSITIONS=464} [2024-11-20 09:46:30,138 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 247 predicate places. [2024-11-20 09:46:30,139 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 464 transitions, 6892 flow [2024-11-20 09:46:30,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.515151515151516) internal successors, (281), 33 states have internal predecessors, (281), 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) [2024-11-20 09:46:30,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:30,139 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:30,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 09:46:30,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 09:46:30,344 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:30,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 516411408, now seen corresponding path program 13 times [2024-11-20 09:46:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242012381] [2024-11-20 09:46:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:30,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:46:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242012381] [2024-11-20 09:46:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242012381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390169467] [2024-11-20 09:46:30,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:46:30,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:30,878 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:30,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 09:46:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:30,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:46:30,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 09:46:31,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:31,461 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:46:31,461 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 28 treesize of output 11 [2024-11-20 09:46:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 09:46:31,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390169467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:31,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:31,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 30 [2024-11-20 09:46:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074117736] [2024-11-20 09:46:31,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:31,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-20 09:46:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-20 09:46:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2024-11-20 09:46:31,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:31,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 464 transitions, 6892 flow. Second operand has 31 states, 31 states have (on average 8.64516129032258) internal successors, (268), 31 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:46:31,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:31,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:46:40,795 INFO L124 PetriNetUnfolderBase]: 28825/49158 cut-off events. [2024-11-20 09:46:40,795 INFO L125 PetriNetUnfolderBase]: For 245367/245367 co-relation queries the response was YES. [2024-11-20 09:46:41,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142171 conditions, 49158 events. 28825/49158 cut-off events. For 245367/245367 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 385886 event pairs, 3380 based on Foata normal form. 61/41604 useless extension candidates. Maximal degree in co-relation 142090. Up to 9050 conditions per place. [2024-11-20 09:46:41,793 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 234 selfloop transitions, 501 changer transitions 147/885 dead transitions. [2024-11-20 09:46:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 885 transitions, 10336 flow [2024-11-20 09:46:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-20 09:46:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-20 09:46:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 637 transitions. [2024-11-20 09:46:41,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2024-11-20 09:46:41,796 INFO L175 Difference]: Start difference. First operand has 274 places, 464 transitions, 6892 flow. Second operand 38 states and 637 transitions. [2024-11-20 09:46:41,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 885 transitions, 10336 flow [2024-11-20 09:46:43,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 885 transitions, 9402 flow, removed 366 selfloop flow, removed 26 redundant places. [2024-11-20 09:46:43,151 INFO L231 Difference]: Finished difference. Result has 299 places, 523 transitions, 8734 flow [2024-11-20 09:46:43,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6114, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8734, PETRI_PLACES=299, PETRI_TRANSITIONS=523} [2024-11-20 09:46:43,152 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 272 predicate places. [2024-11-20 09:46:43,152 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 523 transitions, 8734 flow [2024-11-20 09:46:43,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.64516129032258) internal successors, (268), 31 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:46:43,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:46:43,153 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:46:43,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 09:46:43,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 09:46:43,354 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:46:43,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:46:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash 343215040, now seen corresponding path program 14 times [2024-11-20 09:46:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:46:43,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294192075] [2024-11-20 09:46:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:46:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:46:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:46:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 09:46:43,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:46:43,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294192075] [2024-11-20 09:46:43,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294192075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:46:43,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951034922] [2024-11-20 09:46:43,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:46:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:46:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:46:43,589 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:46:43,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 09:46:43,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:46:43,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:46:43,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 09:46:43,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:46:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 09:46:43,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:46:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 09:46:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951034922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:46:44,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:46:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-20 09:46:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339706825] [2024-11-20 09:46:44,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:46:44,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 09:46:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:46:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 09:46:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2024-11-20 09:46:44,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-11-20 09:46:44,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 523 transitions, 8734 flow. Second operand has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 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) [2024-11-20 09:46:44,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:46:44,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-11-20 09:46:44,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand