./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 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:27:56,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:27:56,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:27:56,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:27:56,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:27:56,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:27:56,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:27:56,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:27:56,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:27:56,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:27:56,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:27:56,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:27:56,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:27:56,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:27:56,882 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:27:56,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:27:56,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:27:56,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:27:56,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:27:56,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:27:56,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:27:56,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:27:56,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:27:56,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:27:56,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:27:56,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:27:56,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:27:56,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:27:56,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:27:56,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:27:56,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:27:56,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:27:56,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:27:56,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:27:56,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:27:56,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:27:56,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:27:56,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-12 08:27:57,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:27:57,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:27:57,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:27:57,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:27:57,115 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:27:57,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-12 08:27:58,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:27:58,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:27:58,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-12 08:27:58,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39da5f7e2/e0ce7c5f87734f18a4e409de24a067b4/FLAG6a287cf58 [2024-11-12 08:27:58,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39da5f7e2/e0ce7c5f87734f18a4e409de24a067b4 [2024-11-12 08:27:58,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:27:58,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:27:58,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:27:58,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:27:58,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:27:58,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:58" (1/1) ... [2024-11-12 08:27:58,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c17f597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:58, skipping insertion in model container [2024-11-12 08:27:58,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:58" (1/1) ... [2024-11-12 08:27:58,975 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:27:59,133 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] [2024-11-12 08:27:59,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:27:59,156 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:27:59,185 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] [2024-11-12 08:27:59,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:27:59,205 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:27:59,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59 WrapperNode [2024-11-12 08:27:59,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:27:59,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:27:59,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:27:59,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:27:59,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,269 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 405 [2024-11-12 08:27:59,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:27:59,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:27:59,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:27:59,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:27:59,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,319 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 3, 16, 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, 1, 4, 1]. [2024-11-12 08:27:59,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:27:59,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:27:59,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:27:59,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:27:59,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (1/1) ... [2024-11-12 08:27:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:27:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:27:59,397 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) [2024-11-12 08:27:59,399 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 [2024-11-12 08:27:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:27:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 08:27:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 08:27:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 08:27:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-12 08:27:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:27:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:27:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:27:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 08:27:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:27:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-12 08:27:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:27:59,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:27:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:27:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:27:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:27:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:27:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:27:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:27:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:27:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 08:27:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:27:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:27:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:27:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:27:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:27:59,442 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:27:59,553 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:27:59,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:28:00,059 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:28:00,061 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:28:00,406 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:28:00,406 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-12 08:28:00,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:00 BoogieIcfgContainer [2024-11-12 08:28:00,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:28:00,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:28:00,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:28:00,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:28:00,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:27:58" (1/3) ... [2024-11-12 08:28:00,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4235bc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:00, skipping insertion in model container [2024-11-12 08:28:00,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:59" (2/3) ... [2024-11-12 08:28:00,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4235bc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:00, skipping insertion in model container [2024-11-12 08:28:00,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:00" (3/3) ... [2024-11-12 08:28:00,414 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-12 08:28:00,427 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:28:00,428 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:28:00,428 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:28:00,478 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:28:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 107 flow [2024-11-12 08:28:00,558 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2024-11-12 08:28:00,559 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:28:00,562 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. [2024-11-12 08:28:00,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 107 flow [2024-11-12 08:28:00,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 39 transitions, 96 flow [2024-11-12 08:28:00,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:28:00,582 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;@3687f1a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:28:00,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:28:00,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:28:00,596 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2024-11-12 08:28:00,596 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:28:00,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:00,597 INFO L206 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] [2024-11-12 08:28:00,597 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)] === [2024-11-12 08:28:00,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash -934428735, now seen corresponding path program 1 times [2024-11-12 08:28:00,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606715734] [2024-11-12 08:28:00,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606715734] [2024-11-12 08:28:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606715734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:00,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353171729] [2024-11-12 08:28:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:00,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:28:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:28:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:28:00,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:00,974 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) [2024-11-12 08:28:00,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:00,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:01,201 INFO L124 PetriNetUnfolderBase]: 503/794 cut-off events. [2024-11-12 08:28:01,202 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-12 08:28:01,206 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. [2024-11-12 08:28:01,212 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 41 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-12 08:28:01,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 226 flow [2024-11-12 08:28:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:28:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:28:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-12 08:28:01,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-12 08:28:01,225 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 96 flow. Second operand 3 states and 79 transitions. [2024-11-12 08:28:01,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 226 flow [2024-11-12 08:28:01,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:28:01,233 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 103 flow [2024-11-12 08:28:01,234 INFO L262 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} [2024-11-12 08:28:01,238 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-12 08:28:01,239 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 103 flow [2024-11-12 08:28:01,239 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) [2024-11-12 08:28:01,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:01,240 INFO L206 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] [2024-11-12 08:28:01,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:28:01,240 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)] === [2024-11-12 08:28:01,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash 407451453, now seen corresponding path program 1 times [2024-11-12 08:28:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236355263] [2024-11-12 08:28:01,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:01,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236355263] [2024-11-12 08:28:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236355263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:01,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:28:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671425176] [2024-11-12 08:28:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:01,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:01,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:01,481 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) [2024-11-12 08:28:01,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:01,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:01,649 INFO L124 PetriNetUnfolderBase]: 557/892 cut-off events. [2024-11-12 08:28:01,649 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-12 08:28:01,651 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. [2024-11-12 08:28:01,655 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-12 08:28:01,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 290 flow [2024-11-12 08:28:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:28:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:28:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-12 08:28:01,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2024-11-12 08:28:01,657 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 103 flow. Second operand 4 states and 103 transitions. [2024-11-12 08:28:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 290 flow [2024-11-12 08:28:01,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:01,658 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 124 flow [2024-11-12 08:28:01,659 INFO L262 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} [2024-11-12 08:28:01,660 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-12 08:28:01,660 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 124 flow [2024-11-12 08:28:01,661 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) [2024-11-12 08:28:01,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:01,661 INFO L206 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] [2024-11-12 08:28:01,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:28:01,663 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)] === [2024-11-12 08:28:01,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 709740762, now seen corresponding path program 1 times [2024-11-12 08:28:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678150259] [2024-11-12 08:28:01,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:28:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:01,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678150259] [2024-11-12 08:28:01,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678150259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:01,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:01,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:28:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745359499] [2024-11-12 08:28:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:01,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:01,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:01,828 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) [2024-11-12 08:28:01,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:01,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:01,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:02,075 INFO L124 PetriNetUnfolderBase]: 801/1374 cut-off events. [2024-11-12 08:28:02,075 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-12 08:28:02,077 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. [2024-11-12 08:28:02,082 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 55 selfloop transitions, 9 changer transitions 1/73 dead transitions. [2024-11-12 08:28:02,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 328 flow [2024-11-12 08:28:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-12 08:28:02,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5441860465116279 [2024-11-12 08:28:02,083 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 124 flow. Second operand 5 states and 117 transitions. [2024-11-12 08:28:02,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 328 flow [2024-11-12 08:28:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 73 transitions, 324 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:02,086 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 187 flow [2024-11-12 08:28:02,086 INFO L262 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} [2024-11-12 08:28:02,087 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-12 08:28:02,087 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 187 flow [2024-11-12 08:28:02,087 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) [2024-11-12 08:28:02,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:02,087 INFO L206 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] [2024-11-12 08:28:02,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:28:02,088 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)] === [2024-11-12 08:28:02,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1836157674, now seen corresponding path program 1 times [2024-11-12 08:28:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810388371] [2024-11-12 08:28:02,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810388371] [2024-11-12 08:28:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810388371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893680359] [2024-11-12 08:28:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:02,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:28:02,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:28:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:28:02,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:02,175 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) [2024-11-12 08:28:02,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:02,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:02,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:02,306 INFO L124 PetriNetUnfolderBase]: 632/1124 cut-off events. [2024-11-12 08:28:02,307 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-11-12 08:28:02,323 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. [2024-11-12 08:28:02,326 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 48 selfloop transitions, 2 changer transitions 7/65 dead transitions. [2024-11-12 08:28:02,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 352 flow [2024-11-12 08:28:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:28:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:28:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-12 08:28:02,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-12 08:28:02,327 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 187 flow. Second operand 3 states and 79 transitions. [2024-11-12 08:28:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 352 flow [2024-11-12 08:28:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 347 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:02,330 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 154 flow [2024-11-12 08:28:02,330 INFO L262 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} [2024-11-12 08:28:02,331 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-12 08:28:02,331 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 154 flow [2024-11-12 08:28:02,331 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) [2024-11-12 08:28:02,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:02,332 INFO L206 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] [2024-11-12 08:28:02,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:28:02,332 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)] === [2024-11-12 08:28:02,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1368630862, now seen corresponding path program 1 times [2024-11-12 08:28:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234134439] [2024-11-12 08:28:02,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:28:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234134439] [2024-11-12 08:28:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234134439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898335856] [2024-11-12 08:28:02,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:02,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:02,523 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) [2024-11-12 08:28:02,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:28:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:02,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 08:28:02,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:28:02,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:28:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898335856] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:02,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:28:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-12 08:28:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162476519] [2024-11-12 08:28:02,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:02,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:28:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:28:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:28:02,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:02,748 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) [2024-11-12 08:28:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:02,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:02,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:02,865 INFO L124 PetriNetUnfolderBase]: 457/747 cut-off events. [2024-11-12 08:28:02,865 INFO L125 PetriNetUnfolderBase]: For 824/830 co-relation queries the response was YES. [2024-11-12 08:28:02,866 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. [2024-11-12 08:28:02,869 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-12 08:28:02,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 230 flow [2024-11-12 08:28:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-12 08:28:02,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.413953488372093 [2024-11-12 08:28:02,870 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 154 flow. Second operand 5 states and 89 transitions. [2024-11-12 08:28:02,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 230 flow [2024-11-12 08:28:02,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 218 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-12 08:28:02,871 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 158 flow [2024-11-12 08:28:02,872 INFO L262 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} [2024-11-12 08:28:02,872 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-12 08:28:02,872 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 158 flow [2024-11-12 08:28:02,872 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) [2024-11-12 08:28:02,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:02,873 INFO L206 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] [2024-11-12 08:28:02,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:28:03,073 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 [2024-11-12 08:28:03,074 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)] === [2024-11-12 08:28:03,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 595104580, now seen corresponding path program 1 times [2024-11-12 08:28:03,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424487554] [2024-11-12 08:28:03,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:28:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:03,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424487554] [2024-11-12 08:28:03,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424487554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:03,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:03,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:28:03,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137780583] [2024-11-12 08:28:03,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:03,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:03,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:03,161 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) [2024-11-12 08:28:03,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:03,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:03,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:03,306 INFO L124 PetriNetUnfolderBase]: 585/998 cut-off events. [2024-11-12 08:28:03,306 INFO L125 PetriNetUnfolderBase]: For 1168/1172 co-relation queries the response was YES. [2024-11-12 08:28:03,308 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. [2024-11-12 08:28:03,311 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 38 selfloop transitions, 2 changer transitions 17/65 dead transitions. [2024-11-12 08:28:03,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 328 flow [2024-11-12 08:28:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:28:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:28:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-12 08:28:03,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-12 08:28:03,312 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 158 flow. Second operand 4 states and 96 transitions. [2024-11-12 08:28:03,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 328 flow [2024-11-12 08:28:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 320 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-12 08:28:03,314 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 166 flow [2024-11-12 08:28:03,315 INFO L262 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} [2024-11-12 08:28:03,315 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-11-12 08:28:03,316 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 166 flow [2024-11-12 08:28:03,317 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) [2024-11-12 08:28:03,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:03,317 INFO L206 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] [2024-11-12 08:28:03,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:28:03,318 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)] === [2024-11-12 08:28:03,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1417140612, now seen corresponding path program 1 times [2024-11-12 08:28:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560736709] [2024-11-12 08:28:03,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:03,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 08:28:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:03,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560736709] [2024-11-12 08:28:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560736709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:03,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690781763] [2024-11-12 08:28:03,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:03,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:28:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:28:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:28:03,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:03,480 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) [2024-11-12 08:28:03,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:03,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:03,602 INFO L124 PetriNetUnfolderBase]: 566/879 cut-off events. [2024-11-12 08:28:03,602 INFO L125 PetriNetUnfolderBase]: For 1137/1143 co-relation queries the response was YES. [2024-11-12 08:28:03,604 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. [2024-11-12 08:28:03,607 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 49 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-12 08:28:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 322 flow [2024-11-12 08:28:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:28:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:28:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-12 08:28:03,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5968992248062015 [2024-11-12 08:28:03,608 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 166 flow. Second operand 3 states and 77 transitions. [2024-11-12 08:28:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 322 flow [2024-11-12 08:28:03,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 312 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-12 08:28:03,610 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 172 flow [2024-11-12 08:28:03,610 INFO L262 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} [2024-11-12 08:28:03,610 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-11-12 08:28:03,611 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 172 flow [2024-11-12 08:28:03,611 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) [2024-11-12 08:28:03,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:03,611 INFO L206 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] [2024-11-12 08:28:03,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 08:28:03,612 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)] === [2024-11-12 08:28:03,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 407620107, now seen corresponding path program 1 times [2024-11-12 08:28:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638655251] [2024-11-12 08:28:03,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 08:28:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638655251] [2024-11-12 08:28:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638655251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:03,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:03,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:28:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701495329] [2024-11-12 08:28:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:03,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:03,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:03,750 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) [2024-11-12 08:28:03,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:03,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:03,903 INFO L124 PetriNetUnfolderBase]: 587/940 cut-off events. [2024-11-12 08:28:03,903 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2024-11-12 08:28:03,905 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. [2024-11-12 08:28:03,908 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 38 selfloop transitions, 2 changer transitions 22/70 dead transitions. [2024-11-12 08:28:03,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 375 flow [2024-11-12 08:28:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-12 08:28:03,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930232558139535 [2024-11-12 08:28:03,909 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 172 flow. Second operand 5 states and 106 transitions. [2024-11-12 08:28:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 375 flow [2024-11-12 08:28:03,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:03,911 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 192 flow [2024-11-12 08:28:03,912 INFO L262 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} [2024-11-12 08:28:03,912 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-11-12 08:28:03,912 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 192 flow [2024-11-12 08:28:03,913 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) [2024-11-12 08:28:03,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:03,913 INFO L206 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] [2024-11-12 08:28:03,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:28:03,913 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)] === [2024-11-12 08:28:03,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1310941219, now seen corresponding path program 1 times [2024-11-12 08:28:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728470452] [2024-11-12 08:28:03,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 08:28:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728470452] [2024-11-12 08:28:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728470452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:28:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520833871] [2024-11-12 08:28:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:04,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:04,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-11-12 08:28:04,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:04,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:04,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-11-12 08:28:04,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:04,344 INFO L124 PetriNetUnfolderBase]: 1178/1807 cut-off events. [2024-11-12 08:28:04,344 INFO L125 PetriNetUnfolderBase]: For 1948/1950 co-relation queries the response was YES. [2024-11-12 08:28:04,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 1807 events. 1178/1807 cut-off events. For 1948/1950 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8634 event pairs, 242 based on Foata normal form. 123/1927 useless extension candidates. Maximal degree in co-relation 5049. Up to 562 conditions per place. [2024-11-12 08:28:04,352 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 74 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-11-12 08:28:04,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 525 flow [2024-11-12 08:28:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-12 08:28:04,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2024-11-12 08:28:04,353 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 192 flow. Second operand 5 states and 109 transitions. [2024-11-12 08:28:04,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 525 flow [2024-11-12 08:28:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 89 transitions, 509 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-12 08:28:04,356 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 250 flow [2024-11-12 08:28:04,357 INFO L262 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-12 08:28:04,357 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2024-11-12 08:28:04,357 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 250 flow [2024-11-12 08:28:04,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:04,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:04,358 INFO L206 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] [2024-11-12 08:28:04,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:28:04,358 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)] === [2024-11-12 08:28:04,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -960613377, now seen corresponding path program 2 times [2024-11-12 08:28:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106053570] [2024-11-12 08:28:04,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 08:28:04,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:04,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106053570] [2024-11-12 08:28:04,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106053570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:04,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:28:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313146126] [2024-11-12 08:28:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:04,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:28:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:28:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:28:04,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-11-12 08:28:04,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-12 08:28:04,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:04,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-11-12 08:28:04,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:05,109 INFO L124 PetriNetUnfolderBase]: 2422/3602 cut-off events. [2024-11-12 08:28:05,110 INFO L125 PetriNetUnfolderBase]: For 5724/5726 co-relation queries the response was YES. [2024-11-12 08:28:05,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12035 conditions, 3602 events. 2422/3602 cut-off events. For 5724/5726 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18296 event pairs, 91 based on Foata normal form. 75/3676 useless extension candidates. Maximal degree in co-relation 12002. Up to 940 conditions per place. [2024-11-12 08:28:05,132 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 106 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-11-12 08:28:05,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 138 transitions, 935 flow [2024-11-12 08:28:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:28:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:28:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-11-12 08:28:05,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4738372093023256 [2024-11-12 08:28:05,133 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 250 flow. Second operand 8 states and 163 transitions. [2024-11-12 08:28:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 138 transitions, 935 flow [2024-11-12 08:28:05,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 931 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-12 08:28:05,140 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 517 flow [2024-11-12 08:28:05,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=517, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-11-12 08:28:05,141 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2024-11-12 08:28:05,141 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 517 flow [2024-11-12 08:28:05,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-12 08:28:05,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:05,142 INFO L206 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] [2024-11-12 08:28:05,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 08:28:05,143 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)] === [2024-11-12 08:28:05,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1203937290, now seen corresponding path program 1 times [2024-11-12 08:28:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:05,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101810282] [2024-11-12 08:28:05,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 08:28:05,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:05,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101810282] [2024-11-12 08:28:05,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101810282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:05,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:05,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820651362] [2024-11-12 08:28:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:05,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:28:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:28:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:28:05,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:05,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:05,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:05,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:05,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:05,609 INFO L124 PetriNetUnfolderBase]: 1586/2508 cut-off events. [2024-11-12 08:28:05,610 INFO L125 PetriNetUnfolderBase]: For 9091/9292 co-relation queries the response was YES. [2024-11-12 08:28:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 2508 events. 1586/2508 cut-off events. For 9091/9292 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12989 event pairs, 398 based on Foata normal form. 260/2679 useless extension candidates. Maximal degree in co-relation 10344. Up to 1251 conditions per place. [2024-11-12 08:28:05,629 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 73 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-11-12 08:28:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 854 flow [2024-11-12 08:28:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:28:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:28:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-12 08:28:05,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-12 08:28:05,630 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 517 flow. Second operand 3 states and 75 transitions. [2024-11-12 08:28:05,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 854 flow [2024-11-12 08:28:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 823 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:05,638 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 521 flow [2024-11-12 08:28:05,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-11-12 08:28:05,639 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2024-11-12 08:28:05,639 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 521 flow [2024-11-12 08:28:05,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:05,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:05,639 INFO L206 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] [2024-11-12 08:28:05,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 08:28:05,639 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)] === [2024-11-12 08:28:05,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1584195628, now seen corresponding path program 1 times [2024-11-12 08:28:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355215409] [2024-11-12 08:28:05,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 08:28:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355215409] [2024-11-12 08:28:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355215409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:05,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:05,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:28:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820806231] [2024-11-12 08:28:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:05,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:05,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:05,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-12 08:28:05,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:05,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:05,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:06,350 INFO L124 PetriNetUnfolderBase]: 1638/2715 cut-off events. [2024-11-12 08:28:06,351 INFO L125 PetriNetUnfolderBase]: For 9882/9956 co-relation queries the response was YES. [2024-11-12 08:28:06,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11293 conditions, 2715 events. 1638/2715 cut-off events. For 9882/9956 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14678 event pairs, 775 based on Foata normal form. 121/2791 useless extension candidates. Maximal degree in co-relation 11251. Up to 2018 conditions per place. [2024-11-12 08:28:06,373 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 52 selfloop transitions, 2 changer transitions 22/102 dead transitions. [2024-11-12 08:28:06,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 782 flow [2024-11-12 08:28:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-11-12 08:28:06,374 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-12 08:28:06,374 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 521 flow. Second operand 5 states and 105 transitions. [2024-11-12 08:28:06,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 782 flow [2024-11-12 08:28:06,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 779 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:06,385 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 540 flow [2024-11-12 08:28:06,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=540, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-11-12 08:28:06,387 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2024-11-12 08:28:06,387 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 540 flow [2024-11-12 08:28:06,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-12 08:28:06,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:06,388 INFO L206 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] [2024-11-12 08:28:06,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 08:28:06,388 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)] === [2024-11-12 08:28:06,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1003223795, now seen corresponding path program 1 times [2024-11-12 08:28:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847503525] [2024-11-12 08:28:06,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 08:28:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847503525] [2024-11-12 08:28:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847503525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639416368] [2024-11-12 08:28:07,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:07,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:07,483 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) [2024-11-12 08:28:07,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:28:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:07,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 08:28:07,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:07,782 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 [2024-11-12 08:28:07,786 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 [2024-11-12 08:28:08,076 INFO L349 Elim1Store]: treesize reduction 61, result has 40.8 percent of original size [2024-11-12 08:28:08,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 73 [2024-11-12 08:28:08,086 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 55 treesize of output 47 [2024-11-12 08:28:08,089 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 39 [2024-11-12 08:28:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 08:28:08,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:08,473 INFO L349 Elim1Store]: treesize reduction 26, result has 91.8 percent of original size [2024-11-12 08:28:08,473 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 91 treesize of output 329 [2024-11-12 08:28:15,572 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 [2024-11-12 08:28:15,586 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 08:28:15,587 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 [2024-11-12 08:28:15,602 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 [2024-11-12 08:28:15,606 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-12 08:28:15,607 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 [2024-11-12 08:28:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 08:28:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639416368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:28:15,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:28:15,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2024-11-12 08:28:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190043369] [2024-11-12 08:28:15,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:28:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 08:28:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 08:28:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-12 08:28:15,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-12 08:28:15,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 540 flow. Second operand has 22 states, 22 states have (on average 14.772727272727273) internal successors, (325), 22 states have internal predecessors, (325), 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) [2024-11-12 08:28:15,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:15,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-12 08:28:15,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:17,114 INFO L124 PetriNetUnfolderBase]: 3077/4860 cut-off events. [2024-11-12 08:28:17,114 INFO L125 PetriNetUnfolderBase]: For 17303/17783 co-relation queries the response was YES. [2024-11-12 08:28:17,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20252 conditions, 4860 events. 3077/4860 cut-off events. For 17303/17783 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 27329 event pairs, 313 based on Foata normal form. 229/4947 useless extension candidates. Maximal degree in co-relation 20207. Up to 2350 conditions per place. [2024-11-12 08:28:17,154 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 167 selfloop transitions, 46 changer transitions 1/240 dead transitions. [2024-11-12 08:28:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 240 transitions, 1901 flow [2024-11-12 08:28:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 08:28:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 08:28:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 403 transitions. [2024-11-12 08:28:17,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074823053589484 [2024-11-12 08:28:17,156 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 540 flow. Second operand 23 states and 403 transitions. [2024-11-12 08:28:17,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 240 transitions, 1901 flow [2024-11-12 08:28:17,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 240 transitions, 1855 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-11-12 08:28:17,171 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 970 flow [2024-11-12 08:28:17,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=970, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2024-11-12 08:28:17,172 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-11-12 08:28:17,172 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 970 flow [2024-11-12 08:28:17,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.772727272727273) internal successors, (325), 22 states have internal predecessors, (325), 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) [2024-11-12 08:28:17,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:17,172 INFO L206 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] [2024-11-12 08:28:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:28:17,376 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 [2024-11-12 08:28:17,377 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)] === [2024-11-12 08:28:17,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -142416603, now seen corresponding path program 2 times [2024-11-12 08:28:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:17,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685125265] [2024-11-12 08:28:17,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:17,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 08:28:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685125265] [2024-11-12 08:28:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685125265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735742838] [2024-11-12 08:28:18,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:28:18,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:18,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:18,276 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) [2024-11-12 08:28:18,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:28:18,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:28:18,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:28:18,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 08:28:18,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:18,476 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 [2024-11-12 08:28:18,502 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 [2024-11-12 08:28:18,505 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 [2024-11-12 08:28:18,704 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 31 treesize of output 23 [2024-11-12 08:28:18,708 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 23 treesize of output 15 [2024-11-12 08:28:18,728 INFO L349 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2024-11-12 08:28:18,728 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 [2024-11-12 08:28:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 08:28:18,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:19,360 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 95 treesize of output 91 [2024-11-12 08:28:19,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:19,370 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 [2024-11-12 08:28:19,376 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 [2024-11-12 08:28:19,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:19,389 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 [2024-11-12 08:28:22,450 INFO L349 Elim1Store]: treesize reduction 4, result has 97.3 percent of original size [2024-11-12 08:28:22,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 902 treesize of output 815 [2024-11-12 08:28:38,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:38,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1395 treesize of output 1337 [2024-11-12 08:28:38,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 64 treesize of output 52