./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:15:02,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:02,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:15:02,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:02,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:02,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:02,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:02,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:02,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:02,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:02,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:02,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:02,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:02,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:02,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:02,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:02,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:15:02,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:15:02,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:15:02,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:15:02,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:02,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:15:02,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:02,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:15:02,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:15:02,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:15:02,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:02,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:02,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:02,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:02,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:02,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:02,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:02,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:02,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:15:02,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:15:02,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:15:02,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:02,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:02,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:02,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:02,963 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2024-11-27 20:15:03,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:03,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:03,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:03,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:03,321 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:03,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:15:07,033 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/data/03d4ed352/09323daba24f49d98d334144fcaea5a9/FLAGfffc9f43f [2024-11-27 20:15:07,600 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:07,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:15:07,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/data/03d4ed352/09323daba24f49d98d334144fcaea5a9/FLAGfffc9f43f [2024-11-27 20:15:07,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/data/03d4ed352/09323daba24f49d98d334144fcaea5a9 [2024-11-27 20:15:07,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:07,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:07,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:07,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:07,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:07,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:07" (1/1) ... [2024-11-27 20:15:07,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50b7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:07, skipping insertion in model container [2024-11-27 20:15:07,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:07" (1/1) ... [2024-11-27 20:15:07,738 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:08,291 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2024-11-27 20:15:08,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:08,311 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:08,368 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2024-11-27 20:15:08,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:08,417 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:08,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08 WrapperNode [2024-11-27 20:15:08,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:08,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:08,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:08,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:08,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,480 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-27 20:15:08,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:08,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:08,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:08,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:08,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,511 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:15:08,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,517 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:08,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:08,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:08,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:08,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (1/1) ... [2024-11-27 20:15:08,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:08,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:08,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-27 20:15:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-27 20:15:08,636 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-27 20:15:08,636 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-27 20:15:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:15:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:15:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:15:08,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:08,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:08,639 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:15:08,845 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:08,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:09,054 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:15:09,055 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:09,155 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:09,155 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:15:09,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:09 BoogieIcfgContainer [2024-11-27 20:15:09,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:09,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:09,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:09,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:09,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:07" (1/3) ... [2024-11-27 20:15:09,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53df3932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:09, skipping insertion in model container [2024-11-27 20:15:09,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:08" (2/3) ... [2024-11-27 20:15:09,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53df3932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:09, skipping insertion in model container [2024-11-27 20:15:09,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:09" (3/3) ... [2024-11-27 20:15:09,169 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2024-11-27 20:15:09,187 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:09,189 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-2.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 20:15:09,189 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:15:09,257 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:15:09,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-27 20:15:09,346 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-27 20:15:09,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:15:09,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-27 20:15:09,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-27 20:15:09,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-27 20:15:09,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:09,383 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;@70acc421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:09,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-27 20:15:09,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:15:09,395 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-27 20:15:09,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:15:09,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:09,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:09,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:09,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1043373254, now seen corresponding path program 1 times [2024-11-27 20:15:09,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:09,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369714048] [2024-11-27 20:15:09,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369714048] [2024-11-27 20:15:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369714048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:10,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188330528] [2024-11-27 20:15:10,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:10,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:10,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:10,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:10,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:10,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:10,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:10,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:10,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:10,548 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-27 20:15:10,548 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 20:15:10,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2162 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-11-27 20:15:10,556 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-27 20:15:10,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-27 20:15:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:15:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:15:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-27 20:15:10,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-27 20:15:10,592 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-27 20:15:10,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-27 20:15:10,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:15:10,604 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-27 20:15:10,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-27 20:15:10,612 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-27 20:15:10,612 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-27 20:15:10,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:10,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:10,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:10,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:15:10,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:10,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1573568646, now seen corresponding path program 1 times [2024-11-27 20:15:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:10,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283460089] [2024-11-27 20:15:10,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283460089] [2024-11-27 20:15:10,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283460089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:10,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:15:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997149847] [2024-11-27 20:15:10,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:15:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:10,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:15:10,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:10,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:10,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:10,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:10,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:10,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:11,395 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-27 20:15:11,396 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-27 20:15:11,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2921 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-11-27 20:15:11,408 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-27 20:15:11,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-27 20:15:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:15:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:15:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-27 20:15:11,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-27 20:15:11,415 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-27 20:15:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-27 20:15:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-27 20:15:11,425 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-27 20:15:11,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-27 20:15:11,428 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-27 20:15:11,428 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-27 20:15:11,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:11,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:11,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:15:11,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1590549516, now seen corresponding path program 2 times [2024-11-27 20:15:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886672570] [2024-11-27 20:15:11,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:11,448 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:15:11,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886672570] [2024-11-27 20:15:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886672570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:11,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:15:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556812790] [2024-11-27 20:15:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:11,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:15:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:11,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:15:11,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:11,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:11,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:11,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:11,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:12,017 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-27 20:15:12,018 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-27 20:15:12,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2530 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-11-27 20:15:12,025 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-27 20:15:12,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-27 20:15:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:15:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:15:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-27 20:15:12,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-27 20:15:12,030 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-27 20:15:12,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-27 20:15:12,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-27 20:15:12,044 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-27 20:15:12,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-11-27 20:15:12,046 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-27 20:15:12,047 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-27 20:15:12,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:12,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:12,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:12,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:15:12,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:12,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2116420421, now seen corresponding path program 1 times [2024-11-27 20:15:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341665988] [2024-11-27 20:15:12,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341665988] [2024-11-27 20:15:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341665988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:12,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:12,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:15:12,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445851353] [2024-11-27 20:15:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:12,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:15:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:12,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:15:12,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:12,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:12,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:12,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:12,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:12,709 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-11-27 20:15:12,709 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-11-27 20:15:12,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2875 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-11-27 20:15:12,718 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-11-27 20:15:12,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-11-27 20:15:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:15:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:15:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-27 20:15:12,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-27 20:15:12,720 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-11-27 20:15:12,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-11-27 20:15:12,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-27 20:15:12,740 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-11-27 20:15:12,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-27 20:15:12,742 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-27 20:15:12,743 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-11-27 20:15:12,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:12,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:12,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:12,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:15:12,745 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:12,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1571665463, now seen corresponding path program 2 times [2024-11-27 20:15:12,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:12,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146990848] [2024-11-27 20:15:12,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:12,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:12,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:15:12,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:13,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146990848] [2024-11-27 20:15:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146990848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:15:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715296953] [2024-11-27 20:15:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:13,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:15:13,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:13,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:15:13,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:13,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:13,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:13,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:13,522 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-11-27 20:15:13,522 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-11-27 20:15:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4534 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-11-27 20:15:13,535 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-11-27 20:15:13,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-11-27 20:15:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:15:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:15:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-27 20:15:13,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-27 20:15:13,539 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-11-27 20:15:13,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-11-27 20:15:13,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-27 20:15:13,556 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-11-27 20:15:13,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-11-27 20:15:13,560 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-27 20:15:13,560 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-11-27 20:15:13,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:13,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:13,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:13,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:15:13,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:13,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1789935611, now seen corresponding path program 3 times [2024-11-27 20:15:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940532267] [2024-11-27 20:15:13,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:15:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:13,592 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:15:13,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940532267] [2024-11-27 20:15:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940532267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:15:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083159807] [2024-11-27 20:15:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:13,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:15:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:13,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:15:13,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:13,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:13,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:13,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:13,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:13,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:14,343 INFO L124 PetriNetUnfolderBase]: 499/926 cut-off events. [2024-11-27 20:15:14,343 INFO L125 PetriNetUnfolderBase]: For 5506/5518 co-relation queries the response was YES. [2024-11-27 20:15:14,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 926 events. 499/926 cut-off events. For 5506/5518 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4318 event pairs, 59 based on Foata normal form. 57/980 useless extension candidates. Maximal degree in co-relation 3487. Up to 157 conditions per place. [2024-11-27 20:15:14,355 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 27 changer transitions 33/108 dead transitions. [2024-11-27 20:15:14,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 999 flow [2024-11-27 20:15:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:15:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:15:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-11-27 20:15:14,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-27 20:15:14,358 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 11 states and 138 transitions. [2024-11-27 20:15:14,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 999 flow [2024-11-27 20:15:14,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 931 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-27 20:15:14,381 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 514 flow [2024-11-27 20:15:14,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=514, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-27 20:15:14,382 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-27 20:15:14,382 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 514 flow [2024-11-27 20:15:14,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:14,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:14,383 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:14,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:15:14,383 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:14,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash -214764279, now seen corresponding path program 1 times [2024-11-27 20:15:14,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:14,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678219630] [2024-11-27 20:15:14,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:14,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678219630] [2024-11-27 20:15:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678219630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:14,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:15:14,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048873255] [2024-11-27 20:15:14,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:14,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:15:14,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:14,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:15:14,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:15:14,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:14,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:14,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:14,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:14,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:15,180 INFO L124 PetriNetUnfolderBase]: 499/932 cut-off events. [2024-11-27 20:15:15,180 INFO L125 PetriNetUnfolderBase]: For 7553/7565 co-relation queries the response was YES. [2024-11-27 20:15:15,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 932 events. 499/932 cut-off events. For 7553/7565 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4329 event pairs, 149 based on Foata normal form. 39/970 useless extension candidates. Maximal degree in co-relation 3796. Up to 522 conditions per place. [2024-11-27 20:15:15,189 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 55 selfloop transitions, 15 changer transitions 31/104 dead transitions. [2024-11-27 20:15:15,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 1062 flow [2024-11-27 20:15:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:15:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:15:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-11-27 20:15:15,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-27 20:15:15,192 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 514 flow. Second operand 11 states and 135 transitions. [2024-11-27 20:15:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 1062 flow [2024-11-27 20:15:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 977 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-11-27 20:15:15,220 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 530 flow [2024-11-27 20:15:15,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-11-27 20:15:15,221 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 50 predicate places. [2024-11-27 20:15:15,223 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 530 flow [2024-11-27 20:15:15,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:15,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:15,223 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:15,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:15:15,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:15,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1884795689, now seen corresponding path program 2 times [2024-11-27 20:15:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341926334] [2024-11-27 20:15:15,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:15,241 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:15,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:15,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:15,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341926334] [2024-11-27 20:15:15,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341926334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639605560] [2024-11-27 20:15:15,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:15,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:15,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:15,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:15:15,503 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:15,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:15,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:15:15,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:15,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639605560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:15,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-27 20:15:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231777399] [2024-11-27 20:15:15,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:15,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:15:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:15,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:15:15,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:15:15,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:15,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 530 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:15,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:15,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:15,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:17,043 INFO L124 PetriNetUnfolderBase]: 859/1567 cut-off events. [2024-11-27 20:15:17,043 INFO L125 PetriNetUnfolderBase]: For 18715/18727 co-relation queries the response was YES. [2024-11-27 20:15:17,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 1567 events. 859/1567 cut-off events. For 18715/18727 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7462 event pairs, 64 based on Foata normal form. 84/1650 useless extension candidates. Maximal degree in co-relation 7386. Up to 291 conditions per place. [2024-11-27 20:15:17,066 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 45 changer transitions 80/216 dead transitions. [2024-11-27 20:15:17,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 216 transitions, 2304 flow [2024-11-27 20:15:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:15:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-27 20:15:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-27 20:15:17,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-27 20:15:17,072 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 530 flow. Second operand 27 states and 334 transitions. [2024-11-27 20:15:17,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 216 transitions, 2304 flow [2024-11-27 20:15:17,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 216 transitions, 2017 flow, removed 131 selfloop flow, removed 8 redundant places. [2024-11-27 20:15:17,111 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 936 flow [2024-11-27 20:15:17,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=936, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2024-11-27 20:15:17,112 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-11-27 20:15:17,113 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 936 flow [2024-11-27 20:15:17,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:17,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:17,114 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:17,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:15:17,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:17,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:17,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1490366984, now seen corresponding path program 1 times [2024-11-27 20:15:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911118688] [2024-11-27 20:15:17,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911118688] [2024-11-27 20:15:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911118688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593759995] [2024-11-27 20:15:17,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:17,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:17,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:17,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:17,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:15:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:17,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:15:17,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:17,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593759995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:18,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-27 20:15:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008325303] [2024-11-27 20:15:18,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:18,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:15:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:18,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:15:18,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:15:18,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:18,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 936 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-27 20:15:18,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:18,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:18,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:19,249 INFO L124 PetriNetUnfolderBase]: 1129/2124 cut-off events. [2024-11-27 20:15:19,249 INFO L125 PetriNetUnfolderBase]: For 70496/70502 co-relation queries the response was YES. [2024-11-27 20:15:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13727 conditions, 2124 events. 1129/2124 cut-off events. For 70496/70502 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11102 event pairs, 153 based on Foata normal form. 69/2190 useless extension candidates. Maximal degree in co-relation 13672. Up to 490 conditions per place. [2024-11-27 20:15:19,278 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 53 changer transitions 67/222 dead transitions. [2024-11-27 20:15:19,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 222 transitions, 3427 flow [2024-11-27 20:15:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:15:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:15:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-27 20:15:19,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-27 20:15:19,284 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 936 flow. Second operand 25 states and 309 transitions. [2024-11-27 20:15:19,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 222 transitions, 3427 flow [2024-11-27 20:15:19,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 222 transitions, 2842 flow, removed 276 selfloop flow, removed 13 redundant places. [2024-11-27 20:15:19,412 INFO L231 Difference]: Finished difference. Result has 128 places, 83 transitions, 1269 flow [2024-11-27 20:15:19,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1269, PETRI_PLACES=128, PETRI_TRANSITIONS=83} [2024-11-27 20:15:19,414 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 102 predicate places. [2024-11-27 20:15:19,414 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 83 transitions, 1269 flow [2024-11-27 20:15:19,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-27 20:15:19,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:19,415 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:19,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:19,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 20:15:19,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:19,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash -815630932, now seen corresponding path program 2 times [2024-11-27 20:15:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:19,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065943065] [2024-11-27 20:15:19,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:19,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:19,644 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:19,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065943065] [2024-11-27 20:15:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065943065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118842843] [2024-11-27 20:15:19,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:19,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:19,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:19,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:19,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:19,933 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:19,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:19,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:15:19,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:20,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118842843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:20,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:20,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-27 20:15:20,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204449450] [2024-11-27 20:15:20,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:20,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:15:20,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:20,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:15:20,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:15:20,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:20,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 83 transitions, 1269 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-27 20:15:20,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:20,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:20,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:21,774 INFO L124 PetriNetUnfolderBase]: 1246/2377 cut-off events. [2024-11-27 20:15:21,775 INFO L125 PetriNetUnfolderBase]: For 115976/115982 co-relation queries the response was YES. [2024-11-27 20:15:21,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16680 conditions, 2377 events. 1246/2377 cut-off events. For 115976/115982 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12709 event pairs, 65 based on Foata normal form. 141/2515 useless extension candidates. Maximal degree in co-relation 16619. Up to 501 conditions per place. [2024-11-27 20:15:21,812 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 78 changer transitions 98/268 dead transitions. [2024-11-27 20:15:21,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 268 transitions, 4859 flow [2024-11-27 20:15:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:15:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-27 20:15:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 345 transitions. [2024-11-27 20:15:21,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-11-27 20:15:21,818 INFO L175 Difference]: Start difference. First operand has 128 places, 83 transitions, 1269 flow. Second operand 28 states and 345 transitions. [2024-11-27 20:15:21,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 268 transitions, 4859 flow [2024-11-27 20:15:22,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 268 transitions, 4124 flow, removed 335 selfloop flow, removed 17 redundant places. [2024-11-27 20:15:22,059 INFO L231 Difference]: Finished difference. Result has 150 places, 104 transitions, 1869 flow [2024-11-27 20:15:22,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1869, PETRI_PLACES=150, PETRI_TRANSITIONS=104} [2024-11-27 20:15:22,061 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 124 predicate places. [2024-11-27 20:15:22,062 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 104 transitions, 1869 flow [2024-11-27 20:15:22,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-27 20:15:22,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:22,063 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:22,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:15:22,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:15:22,264 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash 999547424, now seen corresponding path program 3 times [2024-11-27 20:15:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183509426] [2024-11-27 20:15:22,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:15:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:22,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:15:22,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183509426] [2024-11-27 20:15:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183509426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980771596] [2024-11-27 20:15:22,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:15:22,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:22,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:22,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:22,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:15:22,671 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:15:22,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:22,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:15:22,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:22,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980771596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:23,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-27 20:15:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205313622] [2024-11-27 20:15:23,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:23,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:15:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:23,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:15:23,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:15:23,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:23,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 104 transitions, 1869 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:23,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:23,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:25,777 INFO L124 PetriNetUnfolderBase]: 1714/3171 cut-off events. [2024-11-27 20:15:25,777 INFO L125 PetriNetUnfolderBase]: For 224193/224199 co-relation queries the response was YES. [2024-11-27 20:15:25,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26044 conditions, 3171 events. 1714/3171 cut-off events. For 224193/224199 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16008 event pairs, 42 based on Foata normal form. 96/3266 useless extension candidates. Maximal degree in co-relation 25972. Up to 678 conditions per place. [2024-11-27 20:15:25,829 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 114 changer transitions 135/394 dead transitions. [2024-11-27 20:15:25,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 394 transitions, 7947 flow [2024-11-27 20:15:25,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 20:15:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-27 20:15:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-11-27 20:15:25,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-11-27 20:15:25,833 INFO L175 Difference]: Start difference. First operand has 150 places, 104 transitions, 1869 flow. Second operand 46 states and 565 transitions. [2024-11-27 20:15:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 394 transitions, 7947 flow [2024-11-27 20:15:26,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 394 transitions, 6719 flow, removed 586 selfloop flow, removed 18 redundant places. [2024-11-27 20:15:26,217 INFO L231 Difference]: Finished difference. Result has 197 places, 138 transitions, 2959 flow [2024-11-27 20:15:26,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2959, PETRI_PLACES=197, PETRI_TRANSITIONS=138} [2024-11-27 20:15:26,219 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2024-11-27 20:15:26,219 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 138 transitions, 2959 flow [2024-11-27 20:15:26,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:26,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:26,220 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:26,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:15:26,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:26,424 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:26,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 423422231, now seen corresponding path program 4 times [2024-11-27 20:15:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704143931] [2024-11-27 20:15:26,426 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:15:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:26,445 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:15:26,445 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:27,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704143931] [2024-11-27 20:15:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704143931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:27,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507865420] [2024-11-27 20:15:27,042 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:15:27,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:27,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:27,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:27,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:15:27,138 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:15:27,138 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:27,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:15:27,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:27,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507865420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:28,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-27 20:15:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050055252] [2024-11-27 20:15:28,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:28,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:15:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:28,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:15:28,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:15:28,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:28,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 138 transitions, 2959 flow. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:28,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:28,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:31,818 INFO L124 PetriNetUnfolderBase]: 2218/4260 cut-off events. [2024-11-27 20:15:31,818 INFO L125 PetriNetUnfolderBase]: For 524178/524184 co-relation queries the response was YES. [2024-11-27 20:15:31,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43669 conditions, 4260 events. 2218/4260 cut-off events. For 524178/524184 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 22181 event pairs, 421 based on Foata normal form. 159/4416 useless extension candidates. Maximal degree in co-relation 43579. Up to 1483 conditions per place. [2024-11-27 20:15:31,890 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 190 selfloop transitions, 101 changer transitions 189/483 dead transitions. [2024-11-27 20:15:31,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 483 transitions, 13150 flow [2024-11-27 20:15:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-27 20:15:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-27 20:15:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 653 transitions. [2024-11-27 20:15:31,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4946969696969697 [2024-11-27 20:15:31,894 INFO L175 Difference]: Start difference. First operand has 197 places, 138 transitions, 2959 flow. Second operand 55 states and 653 transitions. [2024-11-27 20:15:31,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 483 transitions, 13150 flow [2024-11-27 20:15:33,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 483 transitions, 10118 flow, removed 1476 selfloop flow, removed 27 redundant places. [2024-11-27 20:15:33,015 INFO L231 Difference]: Finished difference. Result has 247 places, 180 transitions, 3971 flow [2024-11-27 20:15:33,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3971, PETRI_PLACES=247, PETRI_TRANSITIONS=180} [2024-11-27 20:15:33,016 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-11-27 20:15:33,016 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 180 transitions, 3971 flow [2024-11-27 20:15:33,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:33,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:33,017 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:33,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:15:33,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:33,221 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:33,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash -789169585, now seen corresponding path program 5 times [2024-11-27 20:15:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:33,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990217323] [2024-11-27 20:15:33,222 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:15:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:33,248 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 20:15:33,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:33,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990217323] [2024-11-27 20:15:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990217323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812041596] [2024-11-27 20:15:33,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:15:33,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:33,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:33,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:15:33,919 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 20:15:33,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:33,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:15:33,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:34,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812041596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:34,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:34,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-27 20:15:34,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224941063] [2024-11-27 20:15:34,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:34,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 20:15:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:34,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 20:15:34,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:15:34,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:34,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 180 transitions, 3971 flow. Second operand has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:34,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:34,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:34,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:38,724 INFO L124 PetriNetUnfolderBase]: 2767/5513 cut-off events. [2024-11-27 20:15:38,724 INFO L125 PetriNetUnfolderBase]: For 986744/986750 co-relation queries the response was YES. [2024-11-27 20:15:38,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61535 conditions, 5513 events. 2767/5513 cut-off events. For 986744/986750 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31234 event pairs, 194 based on Foata normal form. 159/5671 useless extension candidates. Maximal degree in co-relation 61428. Up to 1380 conditions per place. [2024-11-27 20:15:38,796 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 180 selfloop transitions, 193 changer transitions 201/577 dead transitions. [2024-11-27 20:15:38,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 577 transitions, 16565 flow [2024-11-27 20:15:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-27 20:15:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-27 20:15:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 730 transitions. [2024-11-27 20:15:38,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49863387978142076 [2024-11-27 20:15:38,806 INFO L175 Difference]: Start difference. First operand has 247 places, 180 transitions, 3971 flow. Second operand 61 states and 730 transitions. [2024-11-27 20:15:38,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 577 transitions, 16565 flow [2024-11-27 20:15:41,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 577 transitions, 14039 flow, removed 1228 selfloop flow, removed 29 redundant places. [2024-11-27 20:15:41,353 INFO L231 Difference]: Finished difference. Result has 297 places, 241 transitions, 6004 flow [2024-11-27 20:15:41,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=6004, PETRI_PLACES=297, PETRI_TRANSITIONS=241} [2024-11-27 20:15:41,354 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 271 predicate places. [2024-11-27 20:15:41,354 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 241 transitions, 6004 flow [2024-11-27 20:15:41,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:41,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:41,355 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:41,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:15:41,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:15:41,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:41,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash -478855033, now seen corresponding path program 6 times [2024-11-27 20:15:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334489912] [2024-11-27 20:15:41,556 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:15:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:41,576 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:15:41,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:42,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:42,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334489912] [2024-11-27 20:15:42,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334489912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:42,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126252303] [2024-11-27 20:15:42,303 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:15:42,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:42,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:42,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:15:42,431 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 20:15:42,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:42,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:15:42,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:42,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126252303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:43,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-27 20:15:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640613830] [2024-11-27 20:15:43,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:43,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:15:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:43,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:15:43,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:15:43,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:43,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 241 transitions, 6004 flow. Second operand has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:43,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:43,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:48,341 INFO L124 PetriNetUnfolderBase]: 3694/7306 cut-off events. [2024-11-27 20:15:48,341 INFO L125 PetriNetUnfolderBase]: For 1943353/1943359 co-relation queries the response was YES. [2024-11-27 20:15:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95719 conditions, 7306 events. 3694/7306 cut-off events. For 1943353/1943359 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 42756 event pairs, 83 based on Foata normal form. 159/7462 useless extension candidates. Maximal degree in co-relation 95592. Up to 1827 conditions per place. [2024-11-27 20:15:48,476 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 226 selfloop transitions, 274 changer transitions 205/708 dead transitions. [2024-11-27 20:15:48,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 708 transitions, 23660 flow [2024-11-27 20:15:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-27 20:15:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-27 20:15:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 868 transitions. [2024-11-27 20:15:48,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5093896713615024 [2024-11-27 20:15:48,482 INFO L175 Difference]: Start difference. First operand has 297 places, 241 transitions, 6004 flow. Second operand 71 states and 868 transitions. [2024-11-27 20:15:48,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 708 transitions, 23660 flow [2024-11-27 20:15:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 708 transitions, 19798 flow, removed 1883 selfloop flow, removed 31 redundant places. [2024-11-27 20:15:51,401 INFO L231 Difference]: Finished difference. Result has 361 places, 302 transitions, 8514 flow [2024-11-27 20:15:51,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8514, PETRI_PLACES=361, PETRI_TRANSITIONS=302} [2024-11-27 20:15:51,402 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 335 predicate places. [2024-11-27 20:15:51,402 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 302 transitions, 8514 flow [2024-11-27 20:15:51,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:51,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:51,402 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:51,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:15:51,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:51,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:15:51,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1215894555, now seen corresponding path program 7 times [2024-11-27 20:15:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635404986] [2024-11-27 20:15:51,604 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:15:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:52,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635404986] [2024-11-27 20:15:52,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635404986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524583910] [2024-11-27 20:15:52,069 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:15:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:52,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:52,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:15:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:52,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 20:15:52,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:52,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524583910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:53,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-27 20:15:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742704835] [2024-11-27 20:15:53,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:53,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 20:15:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:53,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 20:15:53,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:15:53,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:15:53,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 302 transitions, 8514 flow. Second operand has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:53,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:53,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:15:53,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:16:01,894 INFO L124 PetriNetUnfolderBase]: 5170/10176 cut-off events. [2024-11-27 20:16:01,894 INFO L125 PetriNetUnfolderBase]: For 4206640/4206646 co-relation queries the response was YES. [2024-11-27 20:16:01,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160041 conditions, 10176 events. 5170/10176 cut-off events. For 4206640/4206646 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 59629 event pairs, 52 based on Foata normal form. 330/10505 useless extension candidates. Maximal degree in co-relation 159889. Up to 2574 conditions per place. [2024-11-27 20:16:02,036 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 314 selfloop transitions, 388 changer transitions 335/1040 dead transitions. [2024-11-27 20:16:02,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1040 transitions, 42796 flow [2024-11-27 20:16:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-27 20:16:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-27 20:16:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1297 transitions. [2024-11-27 20:16:02,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5098270440251572 [2024-11-27 20:16:02,041 INFO L175 Difference]: Start difference. First operand has 361 places, 302 transitions, 8514 flow. Second operand 106 states and 1297 transitions. [2024-11-27 20:16:02,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1040 transitions, 42796 flow [2024-11-27 20:16:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1040 transitions, 34197 flow, removed 4215 selfloop flow, removed 35 redundant places. [2024-11-27 20:16:09,152 INFO L231 Difference]: Finished difference. Result has 479 places, 416 transitions, 13701 flow [2024-11-27 20:16:09,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6131, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=13701, PETRI_PLACES=479, PETRI_TRANSITIONS=416} [2024-11-27 20:16:09,153 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 453 predicate places. [2024-11-27 20:16:09,153 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 416 transitions, 13701 flow [2024-11-27 20:16:09,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:09,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:16:09,153 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:09,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:16:09,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:09,354 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:16:09,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1745731689, now seen corresponding path program 8 times [2024-11-27 20:16:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648609557] [2024-11-27 20:16:09,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:09,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:09,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:11,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648609557] [2024-11-27 20:16:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648609557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:11,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90087389] [2024-11-27 20:16:11,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:11,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:11,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:11,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:11,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:16:11,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:11,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:11,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 20:16:11,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:11,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90087389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:12,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 47 [2024-11-27 20:16:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986126392] [2024-11-27 20:16:12,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:12,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 20:16:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:12,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 20:16:12,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1787, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:16:12,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 20:16:12,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 416 transitions, 13701 flow. Second operand has 48 states, 48 states have (on average 7.0625) internal successors, (339), 48 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:12,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:16:12,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 20:16:12,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:16:22,620 INFO L124 PetriNetUnfolderBase]: 5692/11178 cut-off events. [2024-11-27 20:16:22,620 INFO L125 PetriNetUnfolderBase]: For 6361409/6361415 co-relation queries the response was YES. [2024-11-27 20:16:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186484 conditions, 11178 events. 5692/11178 cut-off events. For 6361409/6361415 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 65270 event pairs, 38 based on Foata normal form. 42/11219 useless extension candidates. Maximal degree in co-relation 186285. Up to 2661 conditions per place. [2024-11-27 20:16:23,041 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 311 selfloop transitions, 456 changer transitions 185/955 dead transitions. [2024-11-27 20:16:23,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 955 transitions, 38322 flow [2024-11-27 20:16:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-27 20:16:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-27 20:16:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1039 transitions. [2024-11-27 20:16:23,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5033914728682171 [2024-11-27 20:16:23,046 INFO L175 Difference]: Start difference. First operand has 479 places, 416 transitions, 13701 flow. Second operand 86 states and 1039 transitions. [2024-11-27 20:16:23,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 955 transitions, 38322 flow [2024-11-27 20:16:47,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 955 transitions, 27948 flow, removed 5029 selfloop flow, removed 54 redundant places. [2024-11-27 20:16:47,953 INFO L231 Difference]: Finished difference. Result has 499 places, 488 transitions, 11932 flow [2024-11-27 20:16:47,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8754, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=11932, PETRI_PLACES=499, PETRI_TRANSITIONS=488} [2024-11-27 20:16:47,955 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 473 predicate places. [2024-11-27 20:16:47,955 INFO L471 AbstractCegarLoop]: Abstraction has has 499 places, 488 transitions, 11932 flow [2024-11-27 20:16:47,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.0625) internal successors, (339), 48 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:47,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:16:47,955 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:47,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:16:48,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:16:48,156 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:16:48,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2004750322, now seen corresponding path program 9 times [2024-11-27 20:16:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386241057] [2024-11-27 20:16:48,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:48,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:48,227 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 20:16:48,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:16:48,227 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:16:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:16:48,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:16:48,349 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:16:48,351 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-27 20:16:48,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-27 20:16:48,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-27 20:16:48,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:16:48,354 INFO L422 BasicCegarLoop]: Path program histogram: [9, 3, 2, 2, 1] [2024-11-27 20:16:48,578 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:16:48,579 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:16:48,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:16:48 BasicIcfg [2024-11-27 20:16:48,590 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:16:48,591 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:16:48,591 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:16:48,592 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:16:48,593 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:09" (3/4) ... [2024-11-27 20:16:48,594 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 20:16:48,755 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 42. [2024-11-27 20:16:48,864 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:16:48,865 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:16:48,865 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:16:48,866 INFO L158 Benchmark]: Toolchain (without parser) took 101202.79ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 104.1MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 925.0MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,867 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:16:48,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 753.25ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 84.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.55ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:16:48,868 INFO L158 Benchmark]: Boogie Preprocessor took 55.23ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.3MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,868 INFO L158 Benchmark]: RCFGBuilder took 618.85ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 64.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,869 INFO L158 Benchmark]: TraceAbstraction took 99432.04ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 63.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 849.5MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,869 INFO L158 Benchmark]: Witness Printer took 274.04ms. Allocated memory is still 2.5GB. Free memory was 1.6GB in the beginning and 1.5GB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 20:16:48,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 753.25ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 84.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.55ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.23ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.3MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 618.85ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 64.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 99432.04ms. Allocated memory was 142.6MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 63.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 849.5MB. Max. memory is 16.1GB. * Witness Printer took 274.04ms. Allocated memory is still 2.5GB. Free memory was 1.6GB in the beginning and 1.5GB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, argc=51, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, argc=51, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, i=43, id1=-2, id2=-1, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=45, id1=-2, id2=-1, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=45, id1=-2, id2=-1, j=46, k=19, k=19] [L722] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=45, id1=-2, id2=-1, j=46, k=19, k=19] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 99.1s, OverallIterations: 17, TraceHistogramMax: 20, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 82.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8577 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8546 mSDsluCounter, 397 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 392 mSDsCounter, 480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7930 IncrementalHoareTripleChecker+Invalid, 8410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 480 mSolverCounterUnsat, 5 mSDtfsCounter, 7930 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1525 GetRequests, 723 SyntacticMatches, 35 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22334 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13701occurred in iteration=15, InterpolantAutomatonStates: 570, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 1089 NumberOfCodeBlocks, 1089 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1358 ConstructedInterpolants, 0 QuantifiedInterpolants, 5459 SizeOfPredicates, 126 NumberOfNonLiveVariables, 1251 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 34 InterpolantComputations, 7 PerfectInterpolantSequences, 2/3897 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:16:48,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee07ae2c-b00c-43f7-8d5a-1a6b20ee1d3b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE