./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:52:46,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:52:46,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:52:46,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:52:46,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:52:46,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:52:46,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:52:46,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:52:46,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:52:46,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:52:46,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:52:46,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:52:46,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:52:46,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:52:46,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:52:46,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:52:46,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:52:46,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:52:46,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:52:46,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:52:46,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:52:46,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:52:46,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:52:46,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:52:46,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:52:46,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:52:46,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:52:46,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:52:46,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:52:46,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:52:46,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:52:46,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:52:46,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:52:46,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:52:46,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:52:46,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:52:46,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:52:46,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:52:46,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:52:46,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:52:46,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:52:46,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:52:46,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-22 13:52:46,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:52:46,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:52:46,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:52:46,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:52:46,777 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:52:46,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-22 13:52:48,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:52:48,384 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:52:48,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-22 13:52:48,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b75f8f0d/70772e7202b8414e8653b3ac124e75f7/FLAG9699343f4 [2024-11-22 13:52:48,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b75f8f0d/70772e7202b8414e8653b3ac124e75f7 [2024-11-22 13:52:48,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:52:48,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:52:48,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:52:48,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:52:48,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:52:48,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:48" (1/1) ... [2024-11-22 13:52:48,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d9d1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:48, skipping insertion in model container [2024-11-22 13:52:48,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:48" (1/1) ... [2024-11-22 13:52:48,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:52:49,030 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4541,4554] [2024-11-22 13:52:49,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:52:49,057 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:52:49,095 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4541,4554] [2024-11-22 13:52:49,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:52:49,122 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:52:49,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49 WrapperNode [2024-11-22 13:52:49,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:52:49,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:52:49,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:52:49,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:52:49,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,187 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 405 [2024-11-22 13:52:49,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:52:49,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:52:49,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:52:49,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:52:49,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,240 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 16, 3, 3]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 4, 1, 1]. [2024-11-22 13:52:49,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:52:49,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:52:49,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:52:49,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:52:49,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (1/1) ... [2024-11-22 13:52:49,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:52:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:49,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:52:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:52:49,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:52:49,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 13:52:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 13:52:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 13:52:49,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 13:52:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:52:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:52:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:52:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 13:52:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:52:49,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:52:49,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:52:49,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:52:49,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 13:52:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:52:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:52:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:52:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:52:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:52:49,379 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:52:49,529 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:52:49,531 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:52:50,190 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:52:50,190 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:52:50,696 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:52:50,697 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-22 13:52:50,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:50 BoogieIcfgContainer [2024-11-22 13:52:50,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:52:50,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:52:50,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:52:50,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:52:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:52:48" (1/3) ... [2024-11-22 13:52:50,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be0ff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:50, skipping insertion in model container [2024-11-22 13:52:50,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:49" (2/3) ... [2024-11-22 13:52:50,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be0ff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:50, skipping insertion in model container [2024-11-22 13:52:50,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:50" (3/3) ... [2024-11-22 13:52:50,708 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-22 13:52:50,727 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:52:50,728 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:52:50,728 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:52:50,802 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:52:50,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 107 flow [2024-11-22 13:52:50,881 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2024-11-22 13:52:50,881 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:52:50,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 9/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-22 13:52:50,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 107 flow [2024-11-22 13:52:50,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 39 transitions, 96 flow [2024-11-22 13:52:50,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:52:50,909 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;@2049cc1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:52:50,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:52:50,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:52:50,930 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2024-11-22 13:52:50,930 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:52:50,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:50,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:50,932 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:50,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -934428735, now seen corresponding path program 1 times [2024-11-22 13:52:50,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:50,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223450912] [2024-11-22 13:52:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:50,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223450912] [2024-11-22 13:52:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223450912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:51,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:52:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120840271] [2024-11-22 13:52:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:51,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:52:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:52:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:52:51,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:51,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:51,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:51,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:51,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:51,675 INFO L124 PetriNetUnfolderBase]: 503/794 cut-off events. [2024-11-22 13:52:51,675 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-22 13:52:51,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 794 events. 503/794 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3554 event pairs, 91 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 1402. Up to 493 conditions per place. [2024-11-22 13:52:51,684 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 41 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-22 13:52:51,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 226 flow [2024-11-22 13:52:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:52:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:52:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-22 13:52:51,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-22 13:52:51,698 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 96 flow. Second operand 3 states and 79 transitions. [2024-11-22 13:52:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 226 flow [2024-11-22 13:52:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:52:51,705 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 103 flow [2024-11-22 13:52:51,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2024-11-22 13:52:51,712 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-22 13:52:51,713 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 103 flow [2024-11-22 13:52:51,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:51,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:51,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:51,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:52:51,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:51,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash 407451453, now seen corresponding path program 1 times [2024-11-22 13:52:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529228417] [2024-11-22 13:52:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:51,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529228417] [2024-11-22 13:52:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529228417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:51,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:51,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:52:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529969844] [2024-11-22 13:52:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:51,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:52:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:52:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:52:52,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:52,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:52,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:52,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:52,270 INFO L124 PetriNetUnfolderBase]: 557/892 cut-off events. [2024-11-22 13:52:52,270 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-22 13:52:52,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 892 events. 557/892 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4539 event pairs, 341 based on Foata normal form. 46/886 useless extension candidates. Maximal degree in co-relation 633. Up to 652 conditions per place. [2024-11-22 13:52:52,280 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-22 13:52:52,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 290 flow [2024-11-22 13:52:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:52:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:52:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-22 13:52:52,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2024-11-22 13:52:52,283 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 103 flow. Second operand 4 states and 103 transitions. [2024-11-22 13:52:52,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 290 flow [2024-11-22 13:52:52,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:52:52,287 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 124 flow [2024-11-22 13:52:52,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2024-11-22 13:52:52,290 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-22 13:52:52,291 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 124 flow [2024-11-22 13:52:52,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:52,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:52,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:52,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:52:52,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:52,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:52,294 INFO L85 PathProgramCache]: Analyzing trace with hash 709740762, now seen corresponding path program 1 times [2024-11-22 13:52:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:52,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523654610] [2024-11-22 13:52:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:52:52,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:52,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523654610] [2024-11-22 13:52:52,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523654610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:52,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:52,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:52:52,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409923216] [2024-11-22 13:52:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:52,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:52:52,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:52,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:52:52,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:52:52,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:52,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:52,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:52,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:52,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:52,864 INFO L124 PetriNetUnfolderBase]: 801/1374 cut-off events. [2024-11-22 13:52:52,864 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-22 13:52:52,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 1374 events. 801/1374 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8168 event pairs, 537 based on Foata normal form. 56/1333 useless extension candidates. Maximal degree in co-relation 2297. Up to 826 conditions per place. [2024-11-22 13:52:52,873 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 55 selfloop transitions, 9 changer transitions 1/73 dead transitions. [2024-11-22 13:52:52,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 328 flow [2024-11-22 13:52:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:52:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:52:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-22 13:52:52,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441860465116279 [2024-11-22 13:52:52,877 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 124 flow. Second operand 5 states and 117 transitions. [2024-11-22 13:52:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 328 flow [2024-11-22 13:52:52,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 73 transitions, 324 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:52:52,881 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 187 flow [2024-11-22 13:52:52,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2024-11-22 13:52:52,883 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-22 13:52:52,883 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 187 flow [2024-11-22 13:52:52,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:52,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:52,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:52,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:52:52,884 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:52,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1836157674, now seen corresponding path program 1 times [2024-11-22 13:52:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462086272] [2024-11-22 13:52:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:52:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462086272] [2024-11-22 13:52:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462086272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:52,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:52,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:52:52,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823604161] [2024-11-22 13:52:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:52,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:52:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:52:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:52:53,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:53,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:53,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:53,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:53,199 INFO L124 PetriNetUnfolderBase]: 632/1124 cut-off events. [2024-11-22 13:52:53,199 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-11-22 13:52:53,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2713 conditions, 1124 events. 632/1124 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6132 event pairs, 200 based on Foata normal form. 50/1128 useless extension candidates. Maximal degree in co-relation 2307. Up to 621 conditions per place. [2024-11-22 13:52:53,205 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 48 selfloop transitions, 2 changer transitions 7/65 dead transitions. [2024-11-22 13:52:53,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 352 flow [2024-11-22 13:52:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:52:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:52:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-22 13:52:53,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-22 13:52:53,207 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 187 flow. Second operand 3 states and 79 transitions. [2024-11-22 13:52:53,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 352 flow [2024-11-22 13:52:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 347 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:52:53,210 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 154 flow [2024-11-22 13:52:53,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-11-22 13:52:53,211 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-22 13:52:53,211 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 154 flow [2024-11-22 13:52:53,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:53,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:53,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:53,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:52:53,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:53,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1368630862, now seen corresponding path program 1 times [2024-11-22 13:52:53,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540023347] [2024-11-22 13:52:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:53,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:52:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540023347] [2024-11-22 13:52:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540023347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050089432] [2024-11-22 13:52:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:53,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:53,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:53,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:52:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:53,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 13:52:53,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:52:53,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:52:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:52:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050089432] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:52:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-22 13:52:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955960795] [2024-11-22 13:52:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:53,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:52:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:52:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:52:53,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:53,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:53,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:53,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:53,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:53,844 INFO L124 PetriNetUnfolderBase]: 457/747 cut-off events. [2024-11-22 13:52:53,845 INFO L125 PetriNetUnfolderBase]: For 824/830 co-relation queries the response was YES. [2024-11-22 13:52:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 747 events. 457/747 cut-off events. For 824/830 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3675 event pairs, 300 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 2009. Up to 675 conditions per place. [2024-11-22 13:52:53,851 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-22 13:52:53,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 230 flow [2024-11-22 13:52:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:52:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:52:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-22 13:52:53,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413953488372093 [2024-11-22 13:52:53,854 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 154 flow. Second operand 5 states and 89 transitions. [2024-11-22 13:52:53,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 230 flow [2024-11-22 13:52:53,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 218 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-22 13:52:53,857 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 158 flow [2024-11-22 13:52:53,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-22 13:52:53,859 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-22 13:52:53,860 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 158 flow [2024-11-22 13:52:53,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:53,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:53,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:53,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:52:54,061 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 [2024-11-22 13:52:54,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:54,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash 595104580, now seen corresponding path program 1 times [2024-11-22 13:52:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689852221] [2024-11-22 13:52:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:52:54,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689852221] [2024-11-22 13:52:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689852221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:52:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042889108] [2024-11-22 13:52:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:54,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:52:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:52:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:52:54,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:54,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:54,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:54,406 INFO L124 PetriNetUnfolderBase]: 585/998 cut-off events. [2024-11-22 13:52:54,407 INFO L125 PetriNetUnfolderBase]: For 1168/1172 co-relation queries the response was YES. [2024-11-22 13:52:54,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 998 events. 585/998 cut-off events. For 1168/1172 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5372 event pairs, 415 based on Foata normal form. 48/1017 useless extension candidates. Maximal degree in co-relation 2550. Up to 675 conditions per place. [2024-11-22 13:52:54,413 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 38 selfloop transitions, 2 changer transitions 17/65 dead transitions. [2024-11-22 13:52:54,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 328 flow [2024-11-22 13:52:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:52:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:52:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-22 13:52:54,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-22 13:52:54,415 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 158 flow. Second operand 4 states and 96 transitions. [2024-11-22 13:52:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 328 flow [2024-11-22 13:52:54,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 320 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 13:52:54,418 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 166 flow [2024-11-22 13:52:54,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-22 13:52:54,419 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-11-22 13:52:54,419 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 166 flow [2024-11-22 13:52:54,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:54,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:54,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:54,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:52:54,420 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:54,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1417140612, now seen corresponding path program 1 times [2024-11-22 13:52:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962021396] [2024-11-22 13:52:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:52:54,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:54,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962021396] [2024-11-22 13:52:54,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962021396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:54,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:54,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:52:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527064171] [2024-11-22 13:52:54,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:54,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:52:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:54,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:52:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:52:54,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:54,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:54,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:54,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:54,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:54,770 INFO L124 PetriNetUnfolderBase]: 566/879 cut-off events. [2024-11-22 13:52:54,770 INFO L125 PetriNetUnfolderBase]: For 1137/1143 co-relation queries the response was YES. [2024-11-22 13:52:54,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 879 events. 566/879 cut-off events. For 1137/1143 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4216 event pairs, 117 based on Foata normal form. 21/878 useless extension candidates. Maximal degree in co-relation 2475. Up to 549 conditions per place. [2024-11-22 13:52:54,776 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 49 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-22 13:52:54,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 322 flow [2024-11-22 13:52:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:52:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:52:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-22 13:52:54,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5968992248062015 [2024-11-22 13:52:54,777 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 166 flow. Second operand 3 states and 77 transitions. [2024-11-22 13:52:54,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 322 flow [2024-11-22 13:52:54,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 312 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:52:54,781 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 172 flow [2024-11-22 13:52:54,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-22 13:52:54,781 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-11-22 13:52:54,782 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 172 flow [2024-11-22 13:52:54,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:54,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:54,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:54,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:52:54,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:54,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash 407620107, now seen corresponding path program 1 times [2024-11-22 13:52:54,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:54,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776380141] [2024-11-22 13:52:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:54,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:52:54,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776380141] [2024-11-22 13:52:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776380141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:52:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818952186] [2024-11-22 13:52:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:54,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:52:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:52:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:52:54,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:54,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:54,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:54,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:54,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:55,215 INFO L124 PetriNetUnfolderBase]: 587/940 cut-off events. [2024-11-22 13:52:55,215 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2024-11-22 13:52:55,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 940 events. 587/940 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4535 event pairs, 380 based on Foata normal form. 20/942 useless extension candidates. Maximal degree in co-relation 2683. Up to 817 conditions per place. [2024-11-22 13:52:55,221 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 38 selfloop transitions, 2 changer transitions 22/70 dead transitions. [2024-11-22 13:52:55,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 375 flow [2024-11-22 13:52:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:52:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:52:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-22 13:52:55,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930232558139535 [2024-11-22 13:52:55,223 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 172 flow. Second operand 5 states and 106 transitions. [2024-11-22 13:52:55,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 375 flow [2024-11-22 13:52:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:52:55,225 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 192 flow [2024-11-22 13:52:55,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-22 13:52:55,226 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-11-22 13:52:55,226 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 192 flow [2024-11-22 13:52:55,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:55,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:55,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:55,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:52:55,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:55,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:55,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1310941219, now seen corresponding path program 1 times [2024-11-22 13:52:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:55,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751649996] [2024-11-22 13:52:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:52:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751649996] [2024-11-22 13:52:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751649996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:52:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281465127] [2024-11-22 13:52:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:55,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:52:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:52:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:52:55,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:55,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:55,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:55,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:55,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:55,798 INFO L124 PetriNetUnfolderBase]: 710/1161 cut-off events. [2024-11-22 13:52:55,798 INFO L125 PetriNetUnfolderBase]: For 1477/1481 co-relation queries the response was YES. [2024-11-22 13:52:55,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 1161 events. 710/1161 cut-off events. For 1477/1481 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6169 event pairs, 497 based on Foata normal form. 63/1201 useless extension candidates. Maximal degree in co-relation 3241. Up to 818 conditions per place. [2024-11-22 13:52:55,806 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 2 changer transitions 22/71 dead transitions. [2024-11-22 13:52:55,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 406 flow [2024-11-22 13:52:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:52:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:52:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-22 13:52:55,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2024-11-22 13:52:55,807 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 192 flow. Second operand 5 states and 109 transitions. [2024-11-22 13:52:55,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 406 flow [2024-11-22 13:52:55,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 380 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-22 13:52:55,812 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 200 flow [2024-11-22 13:52:55,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-11-22 13:52:55,813 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-11-22 13:52:55,813 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 200 flow [2024-11-22 13:52:55,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:55,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:55,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:55,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:52:55,814 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:55,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash 780239998, now seen corresponding path program 1 times [2024-11-22 13:52:55,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:55,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533672107] [2024-11-22 13:52:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:52:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:56,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533672107] [2024-11-22 13:52:56,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533672107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:52:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429274559] [2024-11-22 13:52:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:56,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:52:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:52:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:52:56,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-11-22 13:52:56,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:56,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:56,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-11-22 13:52:56,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:56,424 INFO L124 PetriNetUnfolderBase]: 1178/1809 cut-off events. [2024-11-22 13:52:56,425 INFO L125 PetriNetUnfolderBase]: For 2337/2339 co-relation queries the response was YES. [2024-11-22 13:52:56,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 1809 events. 1178/1809 cut-off events. For 2337/2339 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8634 event pairs, 242 based on Foata normal form. 123/1929 useless extension candidates. Maximal degree in co-relation 5175. Up to 564 conditions per place. [2024-11-22 13:52:56,437 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 75 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-11-22 13:52:56,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 545 flow [2024-11-22 13:52:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:52:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:52:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-22 13:52:56,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2024-11-22 13:52:56,439 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 200 flow. Second operand 5 states and 109 transitions. [2024-11-22 13:52:56,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 545 flow [2024-11-22 13:52:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 521 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-22 13:52:56,442 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 260 flow [2024-11-22 13:52:56,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-11-22 13:52:56,443 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-22 13:52:56,443 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 260 flow [2024-11-22 13:52:56,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:56,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:56,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:56,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:52:56,444 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1491314598, now seen corresponding path program 2 times [2024-11-22 13:52:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145770385] [2024-11-22 13:52:56,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:52:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:56,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:52:56,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:52:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:52:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145770385] [2024-11-22 13:52:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145770385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:52:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259832172] [2024-11-22 13:52:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:56,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:52:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:52:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:52:56,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-22 13:52:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:56,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:56,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-22 13:52:56,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:57,247 INFO L124 PetriNetUnfolderBase]: 2125/3230 cut-off events. [2024-11-22 13:52:57,247 INFO L125 PetriNetUnfolderBase]: For 5230/5238 co-relation queries the response was YES. [2024-11-22 13:52:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 3230 events. 2125/3230 cut-off events. For 5230/5238 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16592 event pairs, 165 based on Foata normal form. 69/3297 useless extension candidates. Maximal degree in co-relation 10721. Up to 908 conditions per place. [2024-11-22 13:52:57,269 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 89 selfloop transitions, 16 changer transitions 0/113 dead transitions. [2024-11-22 13:52:57,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 759 flow [2024-11-22 13:52:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:52:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:52:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-22 13:52:57,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2024-11-22 13:52:57,271 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 260 flow. Second operand 6 states and 130 transitions. [2024-11-22 13:52:57,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 759 flow [2024-11-22 13:52:57,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 755 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-22 13:52:57,278 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 415 flow [2024-11-22 13:52:57,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-22 13:52:57,279 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-11-22 13:52:57,279 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 415 flow [2024-11-22 13:52:57,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:57,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:57,279 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:57,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:52:57,280 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:57,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -654038087, now seen corresponding path program 1 times [2024-11-22 13:52:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784342456] [2024-11-22 13:52:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 13:52:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784342456] [2024-11-22 13:52:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784342456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:52:57,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:52:57,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:52:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780217306] [2024-11-22 13:52:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:52:57,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:52:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:52:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:52:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:52:57,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:52:57,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:57,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:52:57,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:52:57,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:52:57,887 INFO L124 PetriNetUnfolderBase]: 1497/2385 cut-off events. [2024-11-22 13:52:57,887 INFO L125 PetriNetUnfolderBase]: For 7969/8171 co-relation queries the response was YES. [2024-11-22 13:52:57,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9573 conditions, 2385 events. 1497/2385 cut-off events. For 7969/8171 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12203 event pairs, 393 based on Foata normal form. 283/2611 useless extension candidates. Maximal degree in co-relation 9533. Up to 1154 conditions per place. [2024-11-22 13:52:57,914 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 63 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-22 13:52:57,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 679 flow [2024-11-22 13:52:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:52:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:52:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-22 13:52:57,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-22 13:52:57,915 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 415 flow. Second operand 3 states and 75 transitions. [2024-11-22 13:52:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 679 flow [2024-11-22 13:52:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 674 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:52:57,925 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 433 flow [2024-11-22 13:52:57,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=433, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-22 13:52:57,926 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-11-22 13:52:57,926 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 433 flow [2024-11-22 13:52:57,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:52:57,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:52:57,926 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:52:57,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:52:57,926 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:52:57,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:52:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 775990521, now seen corresponding path program 1 times [2024-11-22 13:52:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:52:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85913058] [2024-11-22 13:52:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:52:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:52:59,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:52:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85913058] [2024-11-22 13:52:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85913058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:52:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429918083] [2024-11-22 13:52:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:52:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:52:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:52:59,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:52:59,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:52:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:52:59,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-22 13:52:59,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:52:59,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:52:59,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-22 13:53:00,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2024-11-22 13:53:00,295 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:53:00,296 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 42 treesize of output 21 [2024-11-22 13:53:00,323 INFO L349 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2024-11-22 13:53:00,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2024-11-22 13:53:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:53:00,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:00,941 INFO L349 Elim1Store]: treesize reduction 26, result has 91.8 percent of original size [2024-11-22 13:53:00,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 337 [2024-11-22 13:53:07,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-22 13:53:07,696 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:53:07,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-22 13:53:07,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-22 13:53:07,735 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 13:53:07,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2024-11-22 13:53:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:53:07,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429918083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:53:07,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:53:07,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2024-11-22 13:53:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506437842] [2024-11-22 13:53:07,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:53:07,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 13:53:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:53:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 13:53:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:53:08,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-22 13:53:08,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 433 flow. Second operand has 26 states, 26 states have (on average 14.26923076923077) internal successors, (371), 26 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:53:08,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:53:08,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-22 13:53:08,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:53:09,949 INFO L124 PetriNetUnfolderBase]: 3262/5084 cut-off events. [2024-11-22 13:53:09,949 INFO L125 PetriNetUnfolderBase]: For 19620/20242 co-relation queries the response was YES. [2024-11-22 13:53:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21842 conditions, 5084 events. 3262/5084 cut-off events. For 19620/20242 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 28342 event pairs, 308 based on Foata normal form. 282/5203 useless extension candidates. Maximal degree in co-relation 21800. Up to 2157 conditions per place. [2024-11-22 13:53:10,004 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 146 selfloop transitions, 39 changer transitions 1/206 dead transitions. [2024-11-22 13:53:10,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 206 transitions, 1656 flow [2024-11-22 13:53:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:53:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 13:53:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 323 transitions. [2024-11-22 13:53:10,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-11-22 13:53:10,007 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 433 flow. Second operand 17 states and 323 transitions. [2024-11-22 13:53:10,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 206 transitions, 1656 flow [2024-11-22 13:53:10,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 206 transitions, 1650 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:53:10,026 INFO L231 Difference]: Finished difference. Result has 95 places, 101 transitions, 849 flow [2024-11-22 13:53:10,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=849, PETRI_PLACES=95, PETRI_TRANSITIONS=101} [2024-11-22 13:53:10,027 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 55 predicate places. [2024-11-22 13:53:10,027 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 101 transitions, 849 flow [2024-11-22 13:53:10,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.26923076923077) internal successors, (371), 26 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:53:10,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:53:10,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:53:10,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:53:10,232 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,SelfDestructingSolverStorable12 [2024-11-22 13:53:10,233 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:53:10,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:53:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash 195384677, now seen corresponding path program 2 times [2024-11-22 13:53:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:53:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751512254] [2024-11-22 13:53:10,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:53:10,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:10,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:53:14,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:53:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751512254] [2024-11-22 13:53:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751512254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:53:14,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665758562] [2024-11-22 13:53:14,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:53:14,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:53:14,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:53:14,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:53:14,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:53:14,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:53:14,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:53:14,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-22 13:53:14,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:53:14,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 13:53:14,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:53:14,728 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-22 13:53:14,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-22 13:53:14,817 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-22 13:53:14,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-11-22 13:53:14,903 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-22 13:53:14,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-22 13:53:14,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:53:15,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:53:15,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 13:53:15,887 INFO L349 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2024-11-22 13:53:15,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 41 [2024-11-22 13:53:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-22 13:53:15,912 INFO L349 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2024-11-22 13:53:15,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2024-11-22 13:53:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:53:15,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:53:17,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2024-11-22 13:53:17,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:53:17,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 298 [2024-11-22 13:53:17,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2024-11-22 13:53:17,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:53:17,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 718