./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:45:06,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:45:06,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:45:06,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:45:06,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:45:06,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:45:06,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:45:06,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:45:06,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:45:06,380 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:45:06,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:45:06,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:45:06,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:45:06,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:45:06,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:45:06,382 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:45:06,383 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:45:06,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:06,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:06,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:45:06,384 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:45:06,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:45:06,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:45:06,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2025-01-09 16:45:06,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:45:06,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:45:06,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:45:06,693 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:45:06,693 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:45:06,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-01-09 16:45:07,926 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86b4eeef6/fc743da5365e4ff98d08c7ee07d84625/FLAG6344f3eab [2025-01-09 16:45:08,167 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:45:08,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-01-09 16:45:08,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86b4eeef6/fc743da5365e4ff98d08c7ee07d84625/FLAG6344f3eab [2025-01-09 16:45:08,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86b4eeef6/fc743da5365e4ff98d08c7ee07d84625 [2025-01-09 16:45:08,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:45:08,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:45:08,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:45:08,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:45:08,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:45:08,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19211522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08, skipping insertion in model container [2025-01-09 16:45:08,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:45:08,405 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2025-01-09 16:45:08,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:45:08,430 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:45:08,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2025-01-09 16:45:08,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:45:08,489 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:45:08,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08 WrapperNode [2025-01-09 16:45:08,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:45:08,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:45:08,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:45:08,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:45:08,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,546 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 278 [2025-01-09 16:45:08,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:45:08,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:45:08,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:45:08,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:45:08,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,583 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-09 16:45:08,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,590 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:45:08,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:45:08,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:45:08,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:45:08,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (1/1) ... [2025-01-09 16:45:08,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:45:08,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:45:08,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:45:08,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:45:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:45:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:45:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:45:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-09 16:45:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:45:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:45:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:45:08,672 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:45:08,772 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:45:08,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:45:09,275 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:45:09,276 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:45:09,634 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:45:09,634 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:45:09,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:45:09 BoogieIcfgContainer [2025-01-09 16:45:09,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:45:09,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:45:09,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:45:09,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:45:09,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:45:08" (1/3) ... [2025-01-09 16:45:09,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402266bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:45:09, skipping insertion in model container [2025-01-09 16:45:09,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:45:08" (2/3) ... [2025-01-09 16:45:09,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402266bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:45:09, skipping insertion in model container [2025-01-09 16:45:09,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:45:09" (3/3) ... [2025-01-09 16:45:09,645 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2025-01-09 16:45:09,660 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:45:09,662 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 45 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 16:45:09,662 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:45:09,737 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-09 16:45:09,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2025-01-09 16:45:09,819 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2025-01-09 16:45:09,822 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 16:45:09,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-01-09 16:45:09,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2025-01-09 16:45:09,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2025-01-09 16:45:09,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:45:09,854 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;@37188949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:45:09,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-09 16:45:09,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:45:09,880 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2025-01-09 16:45:09,880 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 16:45:09,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:09,881 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] [2025-01-09 16:45:09,881 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 2 more)] === [2025-01-09 16:45:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -219375534, now seen corresponding path program 1 times [2025-01-09 16:45:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181147247] [2025-01-09 16:45:09,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:09,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 16:45:10,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 16:45:10,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:10,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:45:10,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181147247] [2025-01-09 16:45:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181147247] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:10,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:10,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:45:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64727775] [2025-01-09 16:45:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:10,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:45:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:10,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:45:10,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:45:10,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2025-01-09 16:45:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-01-09 16:45:10,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:10,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2025-01-09 16:45:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:10,938 INFO L124 PetriNetUnfolderBase]: 2407/3722 cut-off events. [2025-01-09 16:45:10,938 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-01-09 16:45:10,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 3722 events. 2407/3722 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21427 event pairs, 472 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 6303. Up to 2067 conditions per place. [2025-01-09 16:45:10,977 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2025-01-09 16:45:10,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 253 flow [2025-01-09 16:45:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:45:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:45:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-01-09 16:45:10,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2025-01-09 16:45:10,996 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 3 states and 109 transitions. [2025-01-09 16:45:10,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 253 flow [2025-01-09 16:45:11,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-09 16:45:11,011 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 117 flow [2025-01-09 16:45:11,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-01-09 16:45:11,017 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2025-01-09 16:45:11,020 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 117 flow [2025-01-09 16:45:11,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-01-09 16:45:11,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:11,021 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] [2025-01-09 16:45:11,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:45:11,022 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 2 more)] === [2025-01-09 16:45:11,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1690262137, now seen corresponding path program 1 times [2025-01-09 16:45:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:11,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342406315] [2025-01-09 16:45:11,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:11,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 16:45:11,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 16:45:11,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:11,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:45:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342406315] [2025-01-09 16:45:11,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342406315] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:11,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:11,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:45:11,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819565918] [2025-01-09 16:45:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:11,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:45:11,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:11,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:45:11,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:45:11,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2025-01-09 16:45:11,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-01-09 16:45:11,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:11,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2025-01-09 16:45:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:11,753 INFO L124 PetriNetUnfolderBase]: 2668/4085 cut-off events. [2025-01-09 16:45:11,753 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2025-01-09 16:45:11,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 4085 events. 2668/4085 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24315 event pairs, 761 based on Foata normal form. 116/3972 useless extension candidates. Maximal degree in co-relation 3131. Up to 2321 conditions per place. [2025-01-09 16:45:11,784 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-01-09 16:45:11,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 279 flow [2025-01-09 16:45:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:45:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:45:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2025-01-09 16:45:11,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2025-01-09 16:45:11,787 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 117 flow. Second operand 3 states and 113 transitions. [2025-01-09 16:45:11,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 279 flow [2025-01-09 16:45:11,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:11,791 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 128 flow [2025-01-09 16:45:11,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=3, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2025-01-09 16:45:11,792 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2025-01-09 16:45:11,792 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 128 flow [2025-01-09 16:45:11,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-01-09 16:45:11,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:11,793 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] [2025-01-09 16:45:11,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:45:11,794 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 2 more)] === [2025-01-09 16:45:11,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2063322799, now seen corresponding path program 1 times [2025-01-09 16:45:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:11,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92549259] [2025-01-09 16:45:11,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:11,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:11,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 16:45:11,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 16:45:11,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:11,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:45:11,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92549259] [2025-01-09 16:45:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92549259] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:11,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:45:11,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44848064] [2025-01-09 16:45:11,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:11,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:45:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:11,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:45:11,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:45:11,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2025-01-09 16:45:11,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-01-09 16:45:11,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:11,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2025-01-09 16:45:11,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:12,447 INFO L124 PetriNetUnfolderBase]: 2976/4754 cut-off events. [2025-01-09 16:45:12,447 INFO L125 PetriNetUnfolderBase]: For 1581/1613 co-relation queries the response was YES. [2025-01-09 16:45:12,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10200 conditions, 4754 events. 2976/4754 cut-off events. For 1581/1613 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30385 event pairs, 955 based on Foata normal form. 77/4655 useless extension candidates. Maximal degree in co-relation 4642. Up to 2600 conditions per place. [2025-01-09 16:45:12,486 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-01-09 16:45:12,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 295 flow [2025-01-09 16:45:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:45:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:45:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-01-09 16:45:12,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.74 [2025-01-09 16:45:12,490 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 128 flow. Second operand 3 states and 111 transitions. [2025-01-09 16:45:12,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 295 flow [2025-01-09 16:45:12,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:12,494 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 140 flow [2025-01-09 16:45:12,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2025-01-09 16:45:12,495 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2025-01-09 16:45:12,496 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 140 flow [2025-01-09 16:45:12,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-01-09 16:45:12,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:12,496 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] [2025-01-09 16:45:12,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:45:12,497 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 2 more)] === [2025-01-09 16:45:12,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:12,497 INFO L85 PathProgramCache]: Analyzing trace with hash -389411758, now seen corresponding path program 1 times [2025-01-09 16:45:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167179479] [2025-01-09 16:45:12,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:12,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:45:12,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:45:12,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:12,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:45:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167179479] [2025-01-09 16:45:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167179479] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:45:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068096705] [2025-01-09 16:45:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:12,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:45:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:12,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:45:12,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:45:12,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2025-01-09 16:45:12,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-01-09 16:45:12,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:12,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2025-01-09 16:45:12,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:13,230 INFO L124 PetriNetUnfolderBase]: 3553/5584 cut-off events. [2025-01-09 16:45:13,230 INFO L125 PetriNetUnfolderBase]: For 2409/2492 co-relation queries the response was YES. [2025-01-09 16:45:13,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12767 conditions, 5584 events. 3553/5584 cut-off events. For 2409/2492 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 36888 event pairs, 2675 based on Foata normal form. 107/5340 useless extension candidates. Maximal degree in co-relation 6208. Up to 4009 conditions per place. [2025-01-09 16:45:13,262 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2025-01-09 16:45:13,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 331 flow [2025-01-09 16:45:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:45:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:45:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2025-01-09 16:45:13,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.685 [2025-01-09 16:45:13,266 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 140 flow. Second operand 4 states and 137 transitions. [2025-01-09 16:45:13,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 331 flow [2025-01-09 16:45:13,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:13,269 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 158 flow [2025-01-09 16:45:13,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2025-01-09 16:45:13,270 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2025-01-09 16:45:13,270 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 158 flow [2025-01-09 16:45:13,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-01-09 16:45:13,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:13,271 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] [2025-01-09 16:45:13,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:45:13,271 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 2 more)] === [2025-01-09 16:45:13,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:13,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1115981730, now seen corresponding path program 1 times [2025-01-09 16:45:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645136654] [2025-01-09 16:45:13,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:13,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:13,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:45:13,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:45:13,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:13,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:45:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645136654] [2025-01-09 16:45:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645136654] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:45:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622936342] [2025-01-09 16:45:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:13,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:45:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:13,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:45:13,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:45:13,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2025-01-09 16:45:13,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-01-09 16:45:13,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:13,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2025-01-09 16:45:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:14,078 INFO L124 PetriNetUnfolderBase]: 4269/6973 cut-off events. [2025-01-09 16:45:14,079 INFO L125 PetriNetUnfolderBase]: For 3095/3187 co-relation queries the response was YES. [2025-01-09 16:45:14,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 6973 events. 4269/6973 cut-off events. For 3095/3187 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 49474 event pairs, 3295 based on Foata normal form. 146/6691 useless extension candidates. Maximal degree in co-relation 13257. Up to 4867 conditions per place. [2025-01-09 16:45:14,126 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 54 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2025-01-09 16:45:14,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 346 flow [2025-01-09 16:45:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:45:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:45:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-01-09 16:45:14,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-01-09 16:45:14,128 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 158 flow. Second operand 4 states and 135 transitions. [2025-01-09 16:45:14,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 346 flow [2025-01-09 16:45:14,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:14,133 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2025-01-09 16:45:14,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-01-09 16:45:14,134 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2025-01-09 16:45:14,135 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2025-01-09 16:45:14,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-01-09 16:45:14,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:14,135 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] [2025-01-09 16:45:14,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:45:14,136 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 2 more)] === [2025-01-09 16:45:14,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1337296650, now seen corresponding path program 1 times [2025-01-09 16:45:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:14,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712258551] [2025-01-09 16:45:14,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:14,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 16:45:14,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:14,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:14,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712258551] [2025-01-09 16:45:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712258551] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:14,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:45:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562010471] [2025-01-09 16:45:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:14,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:45:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:14,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:45:14,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:45:14,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:14,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2025-01-09 16:45:14,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:14,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:14,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:16,233 INFO L124 PetriNetUnfolderBase]: 10517/16212 cut-off events. [2025-01-09 16:45:16,233 INFO L125 PetriNetUnfolderBase]: For 6388/6420 co-relation queries the response was YES. [2025-01-09 16:45:16,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37418 conditions, 16212 events. 10517/16212 cut-off events. For 6388/6420 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 113998 event pairs, 897 based on Foata normal form. 372/15755 useless extension candidates. Maximal degree in co-relation 30766. Up to 7997 conditions per place. [2025-01-09 16:45:16,326 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 13 changer transitions 3/145 dead transitions. [2025-01-09 16:45:16,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 145 transitions, 697 flow [2025-01-09 16:45:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:45:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:45:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2025-01-09 16:45:16,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6275 [2025-01-09 16:45:16,329 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 8 states and 251 transitions. [2025-01-09 16:45:16,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 145 transitions, 697 flow [2025-01-09 16:45:16,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 145 transitions, 692 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:16,335 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 275 flow [2025-01-09 16:45:16,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=275, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2025-01-09 16:45:16,337 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2025-01-09 16:45:16,337 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 275 flow [2025-01-09 16:45:16,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2025-01-09 16:45:16,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:16,338 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] [2025-01-09 16:45:16,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:45:16,339 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 2 more)] === [2025-01-09 16:45:16,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash 590853102, now seen corresponding path program 2 times [2025-01-09 16:45:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313014169] [2025-01-09 16:45:16,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:45:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:16,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:16,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:16,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:45:16,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313014169] [2025-01-09 16:45:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313014169] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:16,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:45:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155636600] [2025-01-09 16:45:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:16,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:45:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:16,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:45:16,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:45:16,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:16,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:16,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:16,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:16,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:18,199 INFO L124 PetriNetUnfolderBase]: 10657/16664 cut-off events. [2025-01-09 16:45:18,200 INFO L125 PetriNetUnfolderBase]: For 15878/15920 co-relation queries the response was YES. [2025-01-09 16:45:18,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45131 conditions, 16664 events. 10657/16664 cut-off events. For 15878/15920 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 119025 event pairs, 2595 based on Foata normal form. 60/16581 useless extension candidates. Maximal degree in co-relation 36640. Up to 12299 conditions per place. [2025-01-09 16:45:18,304 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 12 changer transitions 19/116 dead transitions. [2025-01-09 16:45:18,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 636 flow [2025-01-09 16:45:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:45:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:45:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2025-01-09 16:45:18,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2025-01-09 16:45:18,306 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 275 flow. Second operand 6 states and 186 transitions. [2025-01-09 16:45:18,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 636 flow [2025-01-09 16:45:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 634 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-09 16:45:18,328 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 336 flow [2025-01-09 16:45:18,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2025-01-09 16:45:18,329 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2025-01-09 16:45:18,329 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 336 flow [2025-01-09 16:45:18,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:18,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:18,329 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] [2025-01-09 16:45:18,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:45:18,330 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 2 more)] === [2025-01-09 16:45:18,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -934797998, now seen corresponding path program 3 times [2025-01-09 16:45:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231460050] [2025-01-09 16:45:18,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:45:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:18,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:18,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 33 of 37 statements. [2025-01-09 16:45:18,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:45:18,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231460050] [2025-01-09 16:45:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231460050] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:45:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352164108] [2025-01-09 16:45:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:18,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:45:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:18,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:45:18,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:45:18,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:18,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:18,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:20,411 INFO L124 PetriNetUnfolderBase]: 11313/17736 cut-off events. [2025-01-09 16:45:20,412 INFO L125 PetriNetUnfolderBase]: For 23557/23583 co-relation queries the response was YES. [2025-01-09 16:45:20,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50696 conditions, 17736 events. 11313/17736 cut-off events. For 23557/23583 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 128263 event pairs, 2891 based on Foata normal form. 62/17691 useless extension candidates. Maximal degree in co-relation 39992. Up to 12499 conditions per place. [2025-01-09 16:45:20,502 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 92 selfloop transitions, 19 changer transitions 7/130 dead transitions. [2025-01-09 16:45:20,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 795 flow [2025-01-09 16:45:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:45:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:45:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2025-01-09 16:45:20,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2025-01-09 16:45:20,504 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 336 flow. Second operand 7 states and 214 transitions. [2025-01-09 16:45:20,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 795 flow [2025-01-09 16:45:20,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 130 transitions, 761 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-01-09 16:45:20,585 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 444 flow [2025-01-09 16:45:20,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2025-01-09 16:45:20,588 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2025-01-09 16:45:20,588 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 444 flow [2025-01-09 16:45:20,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:20,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:20,588 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] [2025-01-09 16:45:20,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:45:20,589 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 2 more)] === [2025-01-09 16:45:20,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -754813208, now seen corresponding path program 4 times [2025-01-09 16:45:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866025533] [2025-01-09 16:45:20,592 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:45:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:20,608 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:20,630 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:20,631 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:45:20,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:20,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866025533] [2025-01-09 16:45:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866025533] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:20,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944620986] [2025-01-09 16:45:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:20,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:20,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:20,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:20,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2025-01-09 16:45:20,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2025-01-09 16:45:20,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:20,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2025-01-09 16:45:20,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:22,896 INFO L124 PetriNetUnfolderBase]: 17683/25796 cut-off events. [2025-01-09 16:45:22,897 INFO L125 PetriNetUnfolderBase]: For 34332/34378 co-relation queries the response was YES. [2025-01-09 16:45:22,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74069 conditions, 25796 events. 17683/25796 cut-off events. For 34332/34378 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 180472 event pairs, 1393 based on Foata normal form. 364/26017 useless extension candidates. Maximal degree in co-relation 60500. Up to 10015 conditions per place. [2025-01-09 16:45:23,055 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 136 selfloop transitions, 26 changer transitions 3/176 dead transitions. [2025-01-09 16:45:23,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 1184 flow [2025-01-09 16:45:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:45:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:45:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2025-01-09 16:45:23,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2025-01-09 16:45:23,057 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 444 flow. Second operand 7 states and 228 transitions. [2025-01-09 16:45:23,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 1184 flow [2025-01-09 16:45:23,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 176 transitions, 1159 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-01-09 16:45:23,166 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 596 flow [2025-01-09 16:45:23,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2025-01-09 16:45:23,166 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2025-01-09 16:45:23,167 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 596 flow [2025-01-09 16:45:23,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2025-01-09 16:45:23,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:23,167 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] [2025-01-09 16:45:23,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 16:45:23,167 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 2 more)] === [2025-01-09 16:45:23,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -734094084, now seen corresponding path program 5 times [2025-01-09 16:45:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941283362] [2025-01-09 16:45:23,168 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:45:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:23,181 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:23,194 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:23,195 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:45:23,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:45:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:23,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941283362] [2025-01-09 16:45:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941283362] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:23,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:23,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393345377] [2025-01-09 16:45:23,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:23,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:23,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:23,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:23,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:26,142 INFO L124 PetriNetUnfolderBase]: 21248/32634 cut-off events. [2025-01-09 16:45:26,142 INFO L125 PetriNetUnfolderBase]: For 77887/78913 co-relation queries the response was YES. [2025-01-09 16:45:26,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105875 conditions, 32634 events. 21248/32634 cut-off events. For 77887/78913 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 258199 event pairs, 4064 based on Foata normal form. 986/32989 useless extension candidates. Maximal degree in co-relation 86438. Up to 21008 conditions per place. [2025-01-09 16:45:26,516 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 131 selfloop transitions, 47 changer transitions 5/201 dead transitions. [2025-01-09 16:45:26,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 201 transitions, 1643 flow [2025-01-09 16:45:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:45:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:45:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2025-01-09 16:45:26,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6275 [2025-01-09 16:45:26,518 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 596 flow. Second operand 8 states and 251 transitions. [2025-01-09 16:45:26,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 201 transitions, 1643 flow [2025-01-09 16:45:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 201 transitions, 1606 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-01-09 16:45:27,016 INFO L231 Difference]: Finished difference. Result has 104 places, 118 transitions, 1078 flow [2025-01-09 16:45:27,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1078, PETRI_PLACES=104, PETRI_TRANSITIONS=118} [2025-01-09 16:45:27,017 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2025-01-09 16:45:27,017 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 118 transitions, 1078 flow [2025-01-09 16:45:27,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:27,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:27,017 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] [2025-01-09 16:45:27,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 16:45:27,017 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 2 more)] === [2025-01-09 16:45:27,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -765894006, now seen corresponding path program 6 times [2025-01-09 16:45:27,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:27,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104880519] [2025-01-09 16:45:27,018 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:45:27,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:27,036 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:27,063 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:27,063 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:45:27,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104880519] [2025-01-09 16:45:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104880519] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:27,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:27,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950715499] [2025-01-09 16:45:27,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:27,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:27,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:27,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:27,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:27,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 118 transitions, 1078 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:27,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:27,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:27,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:30,547 INFO L124 PetriNetUnfolderBase]: 22130/34554 cut-off events. [2025-01-09 16:45:30,547 INFO L125 PetriNetUnfolderBase]: For 114753/116204 co-relation queries the response was YES. [2025-01-09 16:45:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124690 conditions, 34554 events. 22130/34554 cut-off events. For 114753/116204 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 282869 event pairs, 7205 based on Foata normal form. 1092/34821 useless extension candidates. Maximal degree in co-relation 100449. Up to 25433 conditions per place. [2025-01-09 16:45:30,851 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 90 selfloop transitions, 65 changer transitions 37/210 dead transitions. [2025-01-09 16:45:30,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 210 transitions, 2325 flow [2025-01-09 16:45:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:45:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:45:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2025-01-09 16:45:30,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2025-01-09 16:45:30,853 INFO L175 Difference]: Start difference. First operand has 104 places, 118 transitions, 1078 flow. Second operand 7 states and 208 transitions. [2025-01-09 16:45:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 210 transitions, 2325 flow [2025-01-09 16:45:31,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 210 transitions, 2262 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-09 16:45:31,184 INFO L231 Difference]: Finished difference. Result has 113 places, 146 transitions, 1658 flow [2025-01-09 16:45:31,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1658, PETRI_PLACES=113, PETRI_TRANSITIONS=146} [2025-01-09 16:45:31,185 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2025-01-09 16:45:31,186 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 146 transitions, 1658 flow [2025-01-09 16:45:31,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:31,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:31,187 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] [2025-01-09 16:45:31,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 16:45:31,187 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 2 more)] === [2025-01-09 16:45:31,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -188807270, now seen corresponding path program 7 times [2025-01-09 16:45:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336056483] [2025-01-09 16:45:31,188 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:45:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:31,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 16:45:31,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:31,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:31,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336056483] [2025-01-09 16:45:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336056483] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:31,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560322705] [2025-01-09 16:45:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:31,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:31,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:31,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:31,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:31,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 146 transitions, 1658 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:31,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:31,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:31,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:35,090 INFO L124 PetriNetUnfolderBase]: 22546/34643 cut-off events. [2025-01-09 16:45:35,090 INFO L125 PetriNetUnfolderBase]: For 118665/119743 co-relation queries the response was YES. [2025-01-09 16:45:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131352 conditions, 34643 events. 22546/34643 cut-off events. For 118665/119743 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 275058 event pairs, 6134 based on Foata normal form. 448/34167 useless extension candidates. Maximal degree in co-relation 113372. Up to 25131 conditions per place. [2025-01-09 16:45:35,567 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 135 selfloop transitions, 70 changer transitions 12/234 dead transitions. [2025-01-09 16:45:35,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 234 transitions, 2412 flow [2025-01-09 16:45:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:45:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:45:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2025-01-09 16:45:35,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2025-01-09 16:45:35,569 INFO L175 Difference]: Start difference. First operand has 113 places, 146 transitions, 1658 flow. Second operand 9 states and 276 transitions. [2025-01-09 16:45:35,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 234 transitions, 2412 flow [2025-01-09 16:45:36,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 234 transitions, 2338 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-01-09 16:45:36,182 INFO L231 Difference]: Finished difference. Result has 121 places, 149 transitions, 1799 flow [2025-01-09 16:45:36,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1799, PETRI_PLACES=121, PETRI_TRANSITIONS=149} [2025-01-09 16:45:36,183 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2025-01-09 16:45:36,183 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 149 transitions, 1799 flow [2025-01-09 16:45:36,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:36,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:36,184 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] [2025-01-09 16:45:36,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 16:45:36,184 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 2 more)] === [2025-01-09 16:45:36,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1650805944, now seen corresponding path program 8 times [2025-01-09 16:45:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416631200] [2025-01-09 16:45:36,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:45:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:36,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:36,199 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 33 of 37 statements. [2025-01-09 16:45:36,200 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:45:36,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416631200] [2025-01-09 16:45:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416631200] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427249928] [2025-01-09 16:45:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:36,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:36,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:36,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:36,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:36,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 149 transitions, 1799 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:36,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:36,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:36,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:40,354 INFO L124 PetriNetUnfolderBase]: 24404/38474 cut-off events. [2025-01-09 16:45:40,355 INFO L125 PetriNetUnfolderBase]: For 161299/162942 co-relation queries the response was YES. [2025-01-09 16:45:40,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148511 conditions, 38474 events. 24404/38474 cut-off events. For 161299/162942 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 325447 event pairs, 8231 based on Foata normal form. 1500/39085 useless extension candidates. Maximal degree in co-relation 126812. Up to 26217 conditions per place. [2025-01-09 16:45:40,732 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 125 selfloop transitions, 64 changer transitions 20/229 dead transitions. [2025-01-09 16:45:40,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 229 transitions, 2811 flow [2025-01-09 16:45:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:45:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:45:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2025-01-09 16:45:40,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2025-01-09 16:45:40,735 INFO L175 Difference]: Start difference. First operand has 121 places, 149 transitions, 1799 flow. Second operand 7 states and 215 transitions. [2025-01-09 16:45:40,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 229 transitions, 2811 flow [2025-01-09 16:45:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 229 transitions, 2687 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-01-09 16:45:41,394 INFO L231 Difference]: Finished difference. Result has 128 places, 153 transitions, 1975 flow [2025-01-09 16:45:41,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1975, PETRI_PLACES=128, PETRI_TRANSITIONS=153} [2025-01-09 16:45:41,394 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2025-01-09 16:45:41,395 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 153 transitions, 1975 flow [2025-01-09 16:45:41,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:41,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:41,395 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] [2025-01-09 16:45:41,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 16:45:41,395 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 2 more)] === [2025-01-09 16:45:41,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 858889610, now seen corresponding path program 9 times [2025-01-09 16:45:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691770302] [2025-01-09 16:45:41,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:45:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:41,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:41,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 36 of 37 statements. [2025-01-09 16:45:41,416 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:45:41,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:45:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691770302] [2025-01-09 16:45:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691770302] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:45:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814568434] [2025-01-09 16:45:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:41,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:45:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:41,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:45:41,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:45:41,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:41,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 153 transitions, 1975 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:41,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:41,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:41,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:45,957 INFO L124 PetriNetUnfolderBase]: 24445/38308 cut-off events. [2025-01-09 16:45:45,957 INFO L125 PetriNetUnfolderBase]: For 158556/159786 co-relation queries the response was YES. [2025-01-09 16:45:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151337 conditions, 38308 events. 24445/38308 cut-off events. For 158556/159786 co-relation queries the response was YES. Maximal size of possible extension queue 2434. Compared 321223 event pairs, 6939 based on Foata normal form. 680/37741 useless extension candidates. Maximal degree in co-relation 135452. Up to 26687 conditions per place. [2025-01-09 16:45:46,408 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 137 selfloop transitions, 73 changer transitions 9/236 dead transitions. [2025-01-09 16:45:46,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 236 transitions, 2784 flow [2025-01-09 16:45:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:45:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:45:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2025-01-09 16:45:46,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-01-09 16:45:46,410 INFO L175 Difference]: Start difference. First operand has 128 places, 153 transitions, 1975 flow. Second operand 9 states and 270 transitions. [2025-01-09 16:45:46,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 236 transitions, 2784 flow [2025-01-09 16:45:47,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 236 transitions, 2696 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-01-09 16:45:47,832 INFO L231 Difference]: Finished difference. Result has 135 places, 160 transitions, 2129 flow [2025-01-09 16:45:47,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2129, PETRI_PLACES=135, PETRI_TRANSITIONS=160} [2025-01-09 16:45:47,833 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2025-01-09 16:45:47,833 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 160 transitions, 2129 flow [2025-01-09 16:45:47,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2025-01-09 16:45:47,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:47,833 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] [2025-01-09 16:45:47,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 16:45:47,834 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:45:47,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1150722710, now seen corresponding path program 10 times [2025-01-09 16:45:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-01-09 16:45:47,834 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:45:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:47,843 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:45:47,852 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:47,853 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:45:47,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-01-09 16:45:48,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860809661] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:48,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:48,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:45:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354634405] [2025-01-09 16:45:48,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:48,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:45:48,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:48,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:45:48,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:45:48,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:48,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 160 transitions, 2129 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:48,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:48,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:52,687 INFO L124 PetriNetUnfolderBase]: 27148/42510 cut-off events. [2025-01-09 16:45:52,688 INFO L125 PetriNetUnfolderBase]: For 207115/208098 co-relation queries the response was YES. [2025-01-09 16:45:53,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174788 conditions, 42510 events. 27148/42510 cut-off events. For 207115/208098 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 362961 event pairs, 3511 based on Foata normal form. 378/41853 useless extension candidates. Maximal degree in co-relation 159140. Up to 15835 conditions per place. [2025-01-09 16:45:53,211 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 179 selfloop transitions, 75 changer transitions 17/288 dead transitions. [2025-01-09 16:45:53,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 288 transitions, 3334 flow [2025-01-09 16:45:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:45:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:45:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2025-01-09 16:45:53,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6288888888888889 [2025-01-09 16:45:53,213 INFO L175 Difference]: Start difference. First operand has 135 places, 160 transitions, 2129 flow. Second operand 9 states and 283 transitions. [2025-01-09 16:45:53,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 288 transitions, 3334 flow [2025-01-09 16:45:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 288 transitions, 3265 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-01-09 16:45:55,728 INFO L231 Difference]: Finished difference. Result has 145 places, 168 transitions, 2314 flow [2025-01-09 16:45:55,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2314, PETRI_PLACES=145, PETRI_TRANSITIONS=168} [2025-01-09 16:45:55,729 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2025-01-09 16:45:55,729 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 168 transitions, 2314 flow [2025-01-09 16:45:55,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:55,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:45:55,729 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] [2025-01-09 16:45:55,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 16:45:55,729 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:45:55,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:45:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1700662997, now seen corresponding path program 1 times [2025-01-09 16:45:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:45:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984974326] [2025-01-09 16:45:55,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:45:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:45:55,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 16:45:55,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:45:55,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:45:55,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:45:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:45:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:45:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984974326] [2025-01-09 16:45:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984974326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:45:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:45:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:45:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108719423] [2025-01-09 16:45:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:45:55,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:45:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:45:55,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:45:55,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:45:56,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-01-09 16:45:56,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 168 transitions, 2314 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:45:56,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:45:56,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-01-09 16:45:56,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:45:59,697 INFO L124 PetriNetUnfolderBase]: 23394/35098 cut-off events. [2025-01-09 16:45:59,698 INFO L125 PetriNetUnfolderBase]: For 208297/209052 co-relation queries the response was YES. [2025-01-09 16:46:00,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151123 conditions, 35098 events. 23394/35098 cut-off events. For 208297/209052 co-relation queries the response was YES. Maximal size of possible extension queue 2256. Compared 272378 event pairs, 7441 based on Foata normal form. 227/34172 useless extension candidates. Maximal degree in co-relation 144846. Up to 30297 conditions per place. [2025-01-09 16:46:00,108 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 110 selfloop transitions, 63 changer transitions 16/208 dead transitions. [2025-01-09 16:46:00,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 208 transitions, 2825 flow [2025-01-09 16:46:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:46:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:46:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2025-01-09 16:46:00,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2025-01-09 16:46:00,109 INFO L175 Difference]: Start difference. First operand has 145 places, 168 transitions, 2314 flow. Second operand 6 states and 178 transitions. [2025-01-09 16:46:00,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 208 transitions, 2825 flow [2025-01-09 16:46:01,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 208 transitions, 2651 flow, removed 57 selfloop flow, removed 5 redundant places. [2025-01-09 16:46:01,726 INFO L231 Difference]: Finished difference. Result has 144 places, 163 transitions, 2204 flow [2025-01-09 16:46:01,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2204, PETRI_PLACES=144, PETRI_TRANSITIONS=163} [2025-01-09 16:46:01,727 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2025-01-09 16:46:01,727 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 163 transitions, 2204 flow [2025-01-09 16:46:01,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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) [2025-01-09 16:46:01,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:46:01,727 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] [2025-01-09 16:46:01,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 16:46:01,728 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:46:01,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:46:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -951298213, now seen corresponding path program 2 times [2025-01-09 16:46:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:46:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820586524] [2025-01-09 16:46:01,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:46:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:46:01,736 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:46:01,751 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 33 of 37 statements. [2025-01-09 16:46:01,751 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:46:01,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat