./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:58:05,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:58:05,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:58:05,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:58:05,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:58:05,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:58:05,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:58:05,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:58:05,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:58:05,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:58:05,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:58:05,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:58:05,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:58:05,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:58:05,508 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:58:05,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:58:05,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:58:05,509 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:58:05,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:58:05,511 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:58:05,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:05,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:05,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:05,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:05,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:58:05,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:05,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:05,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:58:05,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:58:05,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:58:05,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:58:05,514 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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/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 -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-28 02:58:05,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:58:05,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:58:05,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:58:05,873 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:58:05,874 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:58:05,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-28 02:58:09,099 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/data/d79d79f44/e28eef7d6b96461da325c0fb4171c0d5/FLAGfda849e5b [2024-11-28 02:58:09,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:58:09,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-28 02:58:09,445 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/data/d79d79f44/e28eef7d6b96461da325c0fb4171c0d5/FLAGfda849e5b [2024-11-28 02:58:09,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/data/d79d79f44/e28eef7d6b96461da325c0fb4171c0d5 [2024-11-28 02:58:09,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:58:09,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:58:09,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:09,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:58:09,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:58:09,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:09" (1/1) ... [2024-11-28 02:58:09,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52731dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:09, skipping insertion in model container [2024-11-28 02:58:09,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:09" (1/1) ... [2024-11-28 02:58:09,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:58:09,772 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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-28 02:58:09,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:10,005 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:58:10,016 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_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-28 02:58:10,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:10,096 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:58:10,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10 WrapperNode [2024-11-28 02:58:10,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:10,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:10,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:58:10,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:58:10,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,172 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 116 [2024-11-28 02:58:10,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:10,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:58:10,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:58:10,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:58:10,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,210 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-28 02:58:10,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:58:10,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:58:10,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:58:10,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:58:10,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (1/1) ... [2024-11-28 02:58:10,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:10,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:58:10,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-28 02:58:10,329 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:58:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:58:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:58:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:58:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:58:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:58:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:58:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:58:10,332 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:58:10,527 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:58:10,530 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:58:10,841 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:58:10,841 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:58:11,124 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:58:11,124 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:58:11,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11 BoogieIcfgContainer [2024-11-28 02:58:11,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:58:11,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:58:11,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:58:11,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:58:11,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:09" (1/3) ... [2024-11-28 02:58:11,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb49fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:11, skipping insertion in model container [2024-11-28 02:58:11,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10" (2/3) ... [2024-11-28 02:58:11,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb49fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:11, skipping insertion in model container [2024-11-28 02:58:11,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11" (3/3) ... [2024-11-28 02:58:11,141 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-28 02:58:11,162 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:58:11,166 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-28 02:58:11,166 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:58:11,238 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:58:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-11-28 02:58:11,348 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-28 02:58:11,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:58:11,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-28 02:58:11,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-11-28 02:58:11,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-11-28 02:58:11,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:58:11,402 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;@748f3566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:58:11,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:58:11,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:58:11,428 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-28 02:58:11,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:58:11,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:11,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:11,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:11,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1886817449, now seen corresponding path program 1 times [2024-11-28 02:58:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:11,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437116269] [2024-11-28 02:58:11,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437116269] [2024-11-28 02:58:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437116269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711486283] [2024-11-28 02:58:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:11,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:58:11,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:11,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:58:11,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:58:11,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-28 02:58:11,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:11,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:11,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-28 02:58:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:11,966 INFO L124 PetriNetUnfolderBase]: 102/244 cut-off events. [2024-11-28 02:58:11,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:58:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 244 events. 102/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 942 event pairs, 66 based on Foata normal form. 21/221 useless extension candidates. Maximal degree in co-relation 421. Up to 182 conditions per place. [2024-11-28 02:58:11,976 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2024-11-28 02:58:11,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 109 flow [2024-11-28 02:58:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:58:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:58:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2024-11-28 02:58:11,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-28 02:58:11,994 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 2 states and 49 transitions. [2024-11-28 02:58:11,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 109 flow [2024-11-28 02:58:12,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:58:12,003 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 66 flow [2024-11-28 02:58:12,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-28 02:58:12,011 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-11-28 02:58:12,011 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 66 flow [2024-11-28 02:58:12,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:12,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:12,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:12,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:58:12,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:12,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1886849227, now seen corresponding path program 1 times [2024-11-28 02:58:12,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:12,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059966536] [2024-11-28 02:58:12,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:12,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059966536] [2024-11-28 02:58:12,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059966536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:12,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:12,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357700598] [2024-11-28 02:58:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:12,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:12,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:12,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:12,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:12,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-28 02:58:12,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-28 02:58:12,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:12,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-28 02:58:12,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:12,983 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-11-28 02:58:12,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:58:12,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1934 event pairs, 20 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 857. Up to 241 conditions per place. [2024-11-28 02:58:12,988 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-11-28 02:58:12,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 264 flow [2024-11-28 02:58:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:58:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-28 02:58:12,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-11-28 02:58:12,992 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 66 flow. Second operand 6 states and 112 transitions. [2024-11-28 02:58:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 264 flow [2024-11-28 02:58:12,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:58:12,996 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 168 flow [2024-11-28 02:58:12,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-11-28 02:58:12,997 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-28 02:58:12,997 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 168 flow [2024-11-28 02:58:12,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-28 02:58:12,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:12,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:12,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:58:12,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:12,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1637250564, now seen corresponding path program 1 times [2024-11-28 02:58:12,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:12,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827142779] [2024-11-28 02:58:12,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827142779] [2024-11-28 02:58:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827142779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:13,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:13,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:58:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278308307] [2024-11-28 02:58:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:13,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:13,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:13,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:13,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:13,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-28 02:58:13,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:13,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:13,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:13,543 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-11-28 02:58:13,543 INFO L125 PetriNetUnfolderBase]: For 184/186 co-relation queries the response was YES. [2024-11-28 02:58:13,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 559 events. 278/559 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2453 event pairs, 60 based on Foata normal form. 20/538 useless extension candidates. Maximal degree in co-relation 1390. Up to 303 conditions per place. [2024-11-28 02:58:13,554 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-11-28 02:58:13,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 89 transitions, 474 flow [2024-11-28 02:58:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:58:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-28 02:58:13,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-28 02:58:13,557 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-11-28 02:58:13,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 89 transitions, 474 flow [2024-11-28 02:58:13,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:58:13,572 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 366 flow [2024-11-28 02:58:13,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-11-28 02:58:13,575 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-28 02:58:13,576 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 366 flow [2024-11-28 02:58:13,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-28 02:58:13,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:13,576 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:13,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:58:13,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:13,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash 783858626, now seen corresponding path program 1 times [2024-11-28 02:58:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863829976] [2024-11-28 02:58:13,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:14,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863829976] [2024-11-28 02:58:14,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863829976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:14,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:14,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:58:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127999369] [2024-11-28 02:58:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:14,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:58:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:14,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:58:14,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:58:14,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-28 02:58:14,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:14,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:14,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-28 02:58:14,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:14,695 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-11-28 02:58:14,696 INFO L125 PetriNetUnfolderBase]: For 1245/1262 co-relation queries the response was YES. [2024-11-28 02:58:14,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 859 events. 399/859 cut-off events. For 1245/1262 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4788 event pairs, 86 based on Foata normal form. 16/819 useless extension candidates. Maximal degree in co-relation 2730. Up to 360 conditions per place. [2024-11-28 02:58:14,704 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-11-28 02:58:14,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 942 flow [2024-11-28 02:58:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:58:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:58:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-28 02:58:14,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-11-28 02:58:14,708 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-11-28 02:58:14,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 942 flow [2024-11-28 02:58:14,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:58:14,725 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 588 flow [2024-11-28 02:58:14,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2024-11-28 02:58:14,727 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-11-28 02:58:14,727 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 588 flow [2024-11-28 02:58:14,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:14,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:14,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:14,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:58:14,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:14,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1461957722, now seen corresponding path program 2 times [2024-11-28 02:58:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723723468] [2024-11-28 02:58:14,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:14,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:14,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:58:14,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:15,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723723468] [2024-11-28 02:58:15,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723723468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:15,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:15,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:58:15,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802844696] [2024-11-28 02:58:15,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:15,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:15,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:15,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:15,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-28 02:58:15,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:15,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:15,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-28 02:58:15,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:16,470 INFO L124 PetriNetUnfolderBase]: 468/945 cut-off events. [2024-11-28 02:58:16,471 INFO L125 PetriNetUnfolderBase]: For 1980/2011 co-relation queries the response was YES. [2024-11-28 02:58:16,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 945 events. 468/945 cut-off events. For 1980/2011 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4965 event pairs, 104 based on Foata normal form. 32/971 useless extension candidates. Maximal degree in co-relation 3452. Up to 583 conditions per place. [2024-11-28 02:58:16,482 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 67 selfloop transitions, 61 changer transitions 0/136 dead transitions. [2024-11-28 02:58:16,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 1241 flow [2024-11-28 02:58:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:58:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 02:58:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-11-28 02:58:16,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-11-28 02:58:16,485 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 588 flow. Second operand 13 states and 196 transitions. [2024-11-28 02:58:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 1241 flow [2024-11-28 02:58:16,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:58:16,504 INFO L231 Difference]: Finished difference. Result has 74 places, 108 transitions, 999 flow [2024-11-28 02:58:16,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=999, PETRI_PLACES=74, PETRI_TRANSITIONS=108} [2024-11-28 02:58:16,505 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-11-28 02:58:16,507 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 108 transitions, 999 flow [2024-11-28 02:58:16,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:16,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:16,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:16,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:58:16,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:16,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 274750052, now seen corresponding path program 3 times [2024-11-28 02:58:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890073790] [2024-11-28 02:58:16,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:16,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:58:16,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:16,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890073790] [2024-11-28 02:58:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890073790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:58:16,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718172303] [2024-11-28 02:58:16,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:16,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:58:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:16,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:58:16,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:58:16,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-28 02:58:16,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 108 transitions, 999 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:16,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:16,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-28 02:58:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:17,500 INFO L124 PetriNetUnfolderBase]: 663/1434 cut-off events. [2024-11-28 02:58:17,500 INFO L125 PetriNetUnfolderBase]: For 3723/3748 co-relation queries the response was YES. [2024-11-28 02:58:17,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 1434 events. 663/1434 cut-off events. For 3723/3748 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8215 event pairs, 138 based on Foata normal form. 16/1448 useless extension candidates. Maximal degree in co-relation 5509. Up to 531 conditions per place. [2024-11-28 02:58:17,516 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 128 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-11-28 02:58:17,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1809 flow [2024-11-28 02:58:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:58:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:58:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-11-28 02:58:17,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-28 02:58:17,518 INFO L175 Difference]: Start difference. First operand has 74 places, 108 transitions, 999 flow. Second operand 7 states and 168 transitions. [2024-11-28 02:58:17,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1809 flow [2024-11-28 02:58:17,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1737 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 02:58:17,545 INFO L231 Difference]: Finished difference. Result has 80 places, 118 transitions, 1153 flow [2024-11-28 02:58:17,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1153, PETRI_PLACES=80, PETRI_TRANSITIONS=118} [2024-11-28 02:58:17,546 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-11-28 02:58:17,547 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 118 transitions, 1153 flow [2024-11-28 02:58:17,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:17,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:17,547 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:17,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:58:17,547 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:17,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash -658982458, now seen corresponding path program 4 times [2024-11-28 02:58:17,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:17,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027663281] [2024-11-28 02:58:17,548 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:58:17,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:17,562 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:58:17,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:17,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:17,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027663281] [2024-11-28 02:58:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027663281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:58:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760201786] [2024-11-28 02:58:17,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:17,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:17,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:17,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:17,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:17,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-28 02:58:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 118 transitions, 1153 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 02:58:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-28 02:58:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:18,282 INFO L124 PetriNetUnfolderBase]: 803/1743 cut-off events. [2024-11-28 02:58:18,283 INFO L125 PetriNetUnfolderBase]: For 5476/5557 co-relation queries the response was YES. [2024-11-28 02:58:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1743 events. 803/1743 cut-off events. For 5476/5557 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10618 event pairs, 136 based on Foata normal form. 75/1804 useless extension candidates. Maximal degree in co-relation 7027. Up to 709 conditions per place. [2024-11-28 02:58:18,303 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 169 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-11-28 02:58:18,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 2384 flow [2024-11-28 02:58:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:58:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:58:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-28 02:58:18,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2024-11-28 02:58:18,305 INFO L175 Difference]: Start difference. First operand has 80 places, 118 transitions, 1153 flow. Second operand 5 states and 123 transitions. [2024-11-28 02:58:18,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 2384 flow [2024-11-28 02:58:18,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 2267 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-11-28 02:58:18,335 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 1280 flow [2024-11-28 02:58:18,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2024-11-28 02:58:18,338 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-11-28 02:58:18,339 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 1280 flow [2024-11-28 02:58:18,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 02:58:18,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:18,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:18,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:58:18,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:18,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1635116866, now seen corresponding path program 5 times [2024-11-28 02:58:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897428201] [2024-11-28 02:58:18,342 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:58:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:18,362 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:58:18,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897428201] [2024-11-28 02:58:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897428201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:58:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734028273] [2024-11-28 02:58:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:18,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:58:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:18,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:58:18,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:58:18,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-28 02:58:18,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 1280 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:18,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-28 02:58:18,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:19,448 INFO L124 PetriNetUnfolderBase]: 822/1812 cut-off events. [2024-11-28 02:58:19,448 INFO L125 PetriNetUnfolderBase]: For 7100/7140 co-relation queries the response was YES. [2024-11-28 02:58:19,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 1812 events. 822/1812 cut-off events. For 7100/7140 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11002 event pairs, 223 based on Foata normal form. 20/1826 useless extension candidates. Maximal degree in co-relation 8238. Up to 1065 conditions per place. [2024-11-28 02:58:19,473 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 144 selfloop transitions, 40 changer transitions 0/199 dead transitions. [2024-11-28 02:58:19,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 199 transitions, 2158 flow [2024-11-28 02:58:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:58:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:58:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-28 02:58:19,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2024-11-28 02:58:19,475 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 1280 flow. Second operand 7 states and 166 transitions. [2024-11-28 02:58:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 199 transitions, 2158 flow [2024-11-28 02:58:19,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 199 transitions, 2135 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-28 02:58:19,519 INFO L231 Difference]: Finished difference. Result has 92 places, 139 transitions, 1495 flow [2024-11-28 02:58:19,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=92, PETRI_TRANSITIONS=139} [2024-11-28 02:58:19,520 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-11-28 02:58:19,521 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 139 transitions, 1495 flow [2024-11-28 02:58:19,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-11-28 02:58:19,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:19,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:19,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:58:19,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:19,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash -61344554, now seen corresponding path program 6 times [2024-11-28 02:58:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450021497] [2024-11-28 02:58:19,523 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:58:19,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:19,548 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:58:19,548 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450021497] [2024-11-28 02:58:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450021497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:58:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761064851] [2024-11-28 02:58:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:20,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:20,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:20,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:20,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:20,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-28 02:58:20,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 139 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:20,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:20,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-28 02:58:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:20,844 INFO L124 PetriNetUnfolderBase]: 921/1915 cut-off events. [2024-11-28 02:58:20,845 INFO L125 PetriNetUnfolderBase]: For 8293/8367 co-relation queries the response was YES. [2024-11-28 02:58:20,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 1915 events. 921/1915 cut-off events. For 8293/8367 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11112 event pairs, 234 based on Foata normal form. 66/1966 useless extension candidates. Maximal degree in co-relation 8839. Up to 1354 conditions per place. [2024-11-28 02:58:20,893 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 103 selfloop transitions, 66 changer transitions 0/179 dead transitions. [2024-11-28 02:58:20,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 2114 flow [2024-11-28 02:58:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:58:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:58:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-11-28 02:58:20,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-28 02:58:20,895 INFO L175 Difference]: Start difference. First operand has 92 places, 139 transitions, 1495 flow. Second operand 9 states and 150 transitions. [2024-11-28 02:58:20,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 2114 flow [2024-11-28 02:58:20,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 2004 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-28 02:58:20,932 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1761 flow [2024-11-28 02:58:20,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1761, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-11-28 02:58:20,934 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2024-11-28 02:58:20,935 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1761 flow [2024-11-28 02:58:20,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:20,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:20,936 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:20,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:58:20,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:20,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:20,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1539984146, now seen corresponding path program 7 times [2024-11-28 02:58:20,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:20,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306738010] [2024-11-28 02:58:20,937 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:58:20,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:21,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306738010] [2024-11-28 02:58:21,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306738010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:21,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:58:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325920961] [2024-11-28 02:58:21,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:21,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:21,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:21,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:21,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-28 02:58:21,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1761 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:21,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:21,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-28 02:58:21,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:22,090 INFO L124 PetriNetUnfolderBase]: 776/1629 cut-off events. [2024-11-28 02:58:22,091 INFO L125 PetriNetUnfolderBase]: For 7074/7135 co-relation queries the response was YES. [2024-11-28 02:58:22,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1629 events. 776/1629 cut-off events. For 7074/7135 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9279 event pairs, 212 based on Foata normal form. 55/1668 useless extension candidates. Maximal degree in co-relation 7631. Up to 1192 conditions per place. [2024-11-28 02:58:22,108 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2024-11-28 02:58:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 162 transitions, 1875 flow [2024-11-28 02:58:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:58:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:58:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-11-28 02:58:22,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-11-28 02:58:22,111 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1761 flow. Second operand 10 states and 166 transitions. [2024-11-28 02:58:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 162 transitions, 1875 flow [2024-11-28 02:58:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1808 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-28 02:58:22,141 INFO L231 Difference]: Finished difference. Result has 106 places, 137 transitions, 1504 flow [2024-11-28 02:58:22,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1504, PETRI_PLACES=106, PETRI_TRANSITIONS=137} [2024-11-28 02:58:22,145 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2024-11-28 02:58:22,146 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 137 transitions, 1504 flow [2024-11-28 02:58:22,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:22,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:22,146 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:22,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:58:22,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:22,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1769826712, now seen corresponding path program 1 times [2024-11-28 02:58:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814156566] [2024-11-28 02:58:22,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:22,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814156566] [2024-11-28 02:58:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814156566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:22,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:58:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679371765] [2024-11-28 02:58:22,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:22,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:58:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:22,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:58:22,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:58:22,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-28 02:58:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 137 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2024-11-28 02:58:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-28 02:58:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:24,028 INFO L124 PetriNetUnfolderBase]: 1448/2956 cut-off events. [2024-11-28 02:58:24,029 INFO L125 PetriNetUnfolderBase]: For 14274/14389 co-relation queries the response was YES. [2024-11-28 02:58:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14152 conditions, 2956 events. 1448/2956 cut-off events. For 14274/14389 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17659 event pairs, 309 based on Foata normal form. 159/3090 useless extension candidates. Maximal degree in co-relation 14117. Up to 1284 conditions per place. [2024-11-28 02:58:24,057 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 211 selfloop transitions, 157 changer transitions 0/378 dead transitions. [2024-11-28 02:58:24,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 378 transitions, 4384 flow [2024-11-28 02:58:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:58:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:58:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-11-28 02:58:24,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5423423423423424 [2024-11-28 02:58:24,059 INFO L175 Difference]: Start difference. First operand has 106 places, 137 transitions, 1504 flow. Second operand 15 states and 301 transitions. [2024-11-28 02:58:24,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 378 transitions, 4384 flow [2024-11-28 02:58:24,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 378 transitions, 4221 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-28 02:58:24,102 INFO L231 Difference]: Finished difference. Result has 127 places, 267 transitions, 3439 flow [2024-11-28 02:58:24,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3439, PETRI_PLACES=127, PETRI_TRANSITIONS=267} [2024-11-28 02:58:24,103 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-11-28 02:58:24,104 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 267 transitions, 3439 flow [2024-11-28 02:58:24,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2024-11-28 02:58:24,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:24,104 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:24,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:58:24,104 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:24,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1407839246, now seen corresponding path program 2 times [2024-11-28 02:58:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738732518] [2024-11-28 02:58:24,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:24,127 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:58:24,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:58:24,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738732518] [2024-11-28 02:58:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738732518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:58:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689666036] [2024-11-28 02:58:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:24,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:24,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:24,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:24,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:24,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 267 transitions, 3439 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:24,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:24,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:24,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:25,942 INFO L124 PetriNetUnfolderBase]: 1836/3702 cut-off events. [2024-11-28 02:58:25,943 INFO L125 PetriNetUnfolderBase]: For 30882/30912 co-relation queries the response was YES. [2024-11-28 02:58:25,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21229 conditions, 3702 events. 1836/3702 cut-off events. For 30882/30912 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 22840 event pairs, 273 based on Foata normal form. 44/3745 useless extension candidates. Maximal degree in co-relation 21182. Up to 1297 conditions per place. [2024-11-28 02:58:25,984 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 276 selfloop transitions, 261 changer transitions 0/543 dead transitions. [2024-11-28 02:58:25,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 543 transitions, 7705 flow [2024-11-28 02:58:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:58:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:58:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2024-11-28 02:58:25,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42277992277992277 [2024-11-28 02:58:25,987 INFO L175 Difference]: Start difference. First operand has 127 places, 267 transitions, 3439 flow. Second operand 14 states and 219 transitions. [2024-11-28 02:58:25,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 543 transitions, 7705 flow [2024-11-28 02:58:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 543 transitions, 7619 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-11-28 02:58:26,156 INFO L231 Difference]: Finished difference. Result has 152 places, 431 transitions, 6635 flow [2024-11-28 02:58:26,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6635, PETRI_PLACES=152, PETRI_TRANSITIONS=431} [2024-11-28 02:58:26,158 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-11-28 02:58:26,159 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 431 transitions, 6635 flow [2024-11-28 02:58:26,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:26,160 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:26,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:58:26,160 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:26,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1398008216, now seen corresponding path program 3 times [2024-11-28 02:58:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:26,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147570403] [2024-11-28 02:58:26,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:26,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:26,185 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:58:26,185 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:58:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147570403] [2024-11-28 02:58:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147570403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:26,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:26,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:58:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293435474] [2024-11-28 02:58:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:26,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:26,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:26,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:26,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:26,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 431 transitions, 6635 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:26,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:26,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:28,380 INFO L124 PetriNetUnfolderBase]: 1924/3884 cut-off events. [2024-11-28 02:58:28,380 INFO L125 PetriNetUnfolderBase]: For 48350/48360 co-relation queries the response was YES. [2024-11-28 02:58:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25852 conditions, 3884 events. 1924/3884 cut-off events. For 48350/48360 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24240 event pairs, 131 based on Foata normal form. 28/3911 useless extension candidates. Maximal degree in co-relation 25793. Up to 978 conditions per place. [2024-11-28 02:58:28,418 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 228 selfloop transitions, 399 changer transitions 0/633 dead transitions. [2024-11-28 02:58:28,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 633 transitions, 10410 flow [2024-11-28 02:58:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:58:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:58:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 259 transitions. [2024-11-28 02:58:28,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-28 02:58:28,422 INFO L175 Difference]: Start difference. First operand has 152 places, 431 transitions, 6635 flow. Second operand 17 states and 259 transitions. [2024-11-28 02:58:28,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 633 transitions, 10410 flow [2024-11-28 02:58:28,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 633 transitions, 10091 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-11-28 02:58:28,771 INFO L231 Difference]: Finished difference. Result has 177 places, 551 transitions, 9520 flow [2024-11-28 02:58:28,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9520, PETRI_PLACES=177, PETRI_TRANSITIONS=551} [2024-11-28 02:58:28,773 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 144 predicate places. [2024-11-28 02:58:28,774 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 551 transitions, 9520 flow [2024-11-28 02:58:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:28,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:28,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:28,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:58:28,775 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:28,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash 575301424, now seen corresponding path program 4 times [2024-11-28 02:58:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002343661] [2024-11-28 02:58:28,777 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:58:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:28,797 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:58:28,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:28,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002343661] [2024-11-28 02:58:28,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002343661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:28,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:28,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:58:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244257577] [2024-11-28 02:58:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:28,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:58:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:28,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:58:28,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:28,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-28 02:58:28,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 551 transitions, 9520 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-11-28 02:58:28,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:28,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-28 02:58:28,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:30,574 INFO L124 PetriNetUnfolderBase]: 2250/4725 cut-off events. [2024-11-28 02:58:30,575 INFO L125 PetriNetUnfolderBase]: For 66904/67108 co-relation queries the response was YES. [2024-11-28 02:58:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 4725 events. 2250/4725 cut-off events. For 66904/67108 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32483 event pairs, 150 based on Foata normal form. 173/4829 useless extension candidates. Maximal degree in co-relation 34092. Up to 1750 conditions per place. [2024-11-28 02:58:30,624 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 462 selfloop transitions, 258 changer transitions 0/796 dead transitions. [2024-11-28 02:58:30,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 796 transitions, 14932 flow [2024-11-28 02:58:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:58:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:58:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-11-28 02:58:30,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777027027027027 [2024-11-28 02:58:30,626 INFO L175 Difference]: Start difference. First operand has 177 places, 551 transitions, 9520 flow. Second operand 8 states and 171 transitions. [2024-11-28 02:58:30,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 796 transitions, 14932 flow [2024-11-28 02:58:31,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 796 transitions, 14546 flow, removed 171 selfloop flow, removed 2 redundant places. [2024-11-28 02:58:31,241 INFO L231 Difference]: Finished difference. Result has 184 places, 603 transitions, 10564 flow [2024-11-28 02:58:31,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9246, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10564, PETRI_PLACES=184, PETRI_TRANSITIONS=603} [2024-11-28 02:58:31,242 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 151 predicate places. [2024-11-28 02:58:31,243 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 603 transitions, 10564 flow [2024-11-28 02:58:31,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-11-28 02:58:31,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:31,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:31,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:58:31,243 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:31,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1549711700, now seen corresponding path program 5 times [2024-11-28 02:58:31,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108430872] [2024-11-28 02:58:31,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:58:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:31,262 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:58:31,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108430872] [2024-11-28 02:58:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108430872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:58:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413167582] [2024-11-28 02:58:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:31,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:58:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:31,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:58:31,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:58:32,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:32,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 603 transitions, 10564 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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) [2024-11-28 02:58:32,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:32,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:32,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:36,228 INFO L124 PetriNetUnfolderBase]: 4544/9115 cut-off events. [2024-11-28 02:58:36,228 INFO L125 PetriNetUnfolderBase]: For 135419/135463 co-relation queries the response was YES. [2024-11-28 02:58:36,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69610 conditions, 9115 events. 4544/9115 cut-off events. For 135419/135463 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 67970 event pairs, 731 based on Foata normal form. 36/9117 useless extension candidates. Maximal degree in co-relation 69539. Up to 4169 conditions per place. [2024-11-28 02:58:36,325 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 799 selfloop transitions, 563 changer transitions 0/1368 dead transitions. [2024-11-28 02:58:36,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1368 transitions, 25748 flow [2024-11-28 02:58:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:58:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:58:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 326 transitions. [2024-11-28 02:58:36,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-11-28 02:58:36,328 INFO L175 Difference]: Start difference. First operand has 184 places, 603 transitions, 10564 flow. Second operand 18 states and 326 transitions. [2024-11-28 02:58:36,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1368 transitions, 25748 flow [2024-11-28 02:58:37,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1368 transitions, 25166 flow, removed 134 selfloop flow, removed 3 redundant places. [2024-11-28 02:58:37,626 INFO L231 Difference]: Finished difference. Result has 212 places, 1074 transitions, 21314 flow [2024-11-28 02:58:37,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10290, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21314, PETRI_PLACES=212, PETRI_TRANSITIONS=1074} [2024-11-28 02:58:37,627 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 179 predicate places. [2024-11-28 02:58:37,627 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 1074 transitions, 21314 flow [2024-11-28 02:58:37,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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) [2024-11-28 02:58:37,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:37,628 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:37,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:58:37,628 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:37,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash 651054908, now seen corresponding path program 6 times [2024-11-28 02:58:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616873491] [2024-11-28 02:58:37,629 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:58:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:37,647 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:58:37,648 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:58:37,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616873491] [2024-11-28 02:58:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616873491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:37,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941732922] [2024-11-28 02:58:37,868 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:58:37,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:37,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:37,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:58:37,984 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:58:37,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:37,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:58:37,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:38,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-28 02:58:38,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:58:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:58:38,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:38,603 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:58:38,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2024-11-28 02:58:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:58:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941732922] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:58:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2024-11-28 02:58:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979727617] [2024-11-28 02:58:38,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:38,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:58:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:38,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:58:38,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:58:38,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:38,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1074 transitions, 21314 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:38,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:38,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:38,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:44,611 INFO L124 PetriNetUnfolderBase]: 6082/12109 cut-off events. [2024-11-28 02:58:44,611 INFO L125 PetriNetUnfolderBase]: For 230033/230083 co-relation queries the response was YES. [2024-11-28 02:58:44,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101096 conditions, 12109 events. 6082/12109 cut-off events. For 230033/230083 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 93991 event pairs, 394 based on Foata normal form. 38/12128 useless extension candidates. Maximal degree in co-relation 101014. Up to 6070 conditions per place. [2024-11-28 02:58:44,755 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 771 selfloop transitions, 726 changer transitions 0/1503 dead transitions. [2024-11-28 02:58:44,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1503 transitions, 32372 flow [2024-11-28 02:58:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:58:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:58:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-28 02:58:44,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-11-28 02:58:44,756 INFO L175 Difference]: Start difference. First operand has 212 places, 1074 transitions, 21314 flow. Second operand 8 states and 141 transitions. [2024-11-28 02:58:44,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1503 transitions, 32372 flow [2024-11-28 02:58:47,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1503 transitions, 31820 flow, removed 276 selfloop flow, removed 0 redundant places. [2024-11-28 02:58:47,571 INFO L231 Difference]: Finished difference. Result has 225 places, 1383 transitions, 30447 flow [2024-11-28 02:58:47,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20954, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30447, PETRI_PLACES=225, PETRI_TRANSITIONS=1383} [2024-11-28 02:58:47,572 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 192 predicate places. [2024-11-28 02:58:47,572 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 1383 transitions, 30447 flow [2024-11-28 02:58:47,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:47,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:47,572 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:47,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:58:47,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:58:47,773 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:58:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1523289602, now seen corresponding path program 7 times [2024-11-28 02:58:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791655480] [2024-11-28 02:58:47,774 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:58:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:48,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791655480] [2024-11-28 02:58:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791655480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130190086] [2024-11-28 02:58:48,282 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:58:48,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:48,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:48,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:58:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:48,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:58:48,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:48,652 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-28 02:58:48,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2024-11-28 02:58:49,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:58:49,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 90 [2024-11-28 02:58:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:58:49,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:58:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130190086] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:49,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:58:49,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-11-28 02:58:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548449131] [2024-11-28 02:58:49,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:49,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:49,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:49,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:58:49,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:58:49,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1383 transitions, 30447 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-28 02:58:49,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:49,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:58:49,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:56,612 INFO L124 PetriNetUnfolderBase]: 6037/12016 cut-off events. [2024-11-28 02:58:56,612 INFO L125 PetriNetUnfolderBase]: For 265134/265154 co-relation queries the response was YES. [2024-11-28 02:58:56,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107961 conditions, 12016 events. 6037/12016 cut-off events. For 265134/265154 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 92522 event pairs, 492 based on Foata normal form. 48/12061 useless extension candidates. Maximal degree in co-relation 107873. Up to 4616 conditions per place. [2024-11-28 02:58:56,763 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 821 selfloop transitions, 622 changer transitions 0/1448 dead transitions. [2024-11-28 02:58:56,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1448 transitions, 34219 flow [2024-11-28 02:58:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:58:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-28 02:58:56,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-11-28 02:58:56,764 INFO L175 Difference]: Start difference. First operand has 225 places, 1383 transitions, 30447 flow. Second operand 6 states and 97 transitions. [2024-11-28 02:58:56,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1448 transitions, 34219 flow [2024-11-28 02:59:00,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1448 transitions, 32496 flow, removed 146 selfloop flow, removed 11 redundant places. [2024-11-28 02:59:00,326 INFO L231 Difference]: Finished difference. Result has 218 places, 1385 transitions, 30593 flow [2024-11-28 02:59:00,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28704, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=618, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=30593, PETRI_PLACES=218, PETRI_TRANSITIONS=1385} [2024-11-28 02:59:00,327 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2024-11-28 02:59:00,327 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 1385 transitions, 30593 flow [2024-11-28 02:59:00,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-28 02:59:00,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:00,327 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:00,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:00,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:59:00,528 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:59:00,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1477972128, now seen corresponding path program 1 times [2024-11-28 02:59:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054740575] [2024-11-28 02:59:00,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054740575] [2024-11-28 02:59:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054740575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:00,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:00,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101078495] [2024-11-28 02:59:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:00,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:00,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:00,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:00,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:00,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-28 02:59:00,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1385 transitions, 30593 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-28 02:59:00,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:00,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-28 02:59:00,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:08,105 INFO L124 PetriNetUnfolderBase]: 5524/11253 cut-off events. [2024-11-28 02:59:08,106 INFO L125 PetriNetUnfolderBase]: For 242194/242432 co-relation queries the response was YES. [2024-11-28 02:59:08,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102756 conditions, 11253 events. 5524/11253 cut-off events. For 242194/242432 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 88976 event pairs, 1209 based on Foata normal form. 14/11170 useless extension candidates. Maximal degree in co-relation 102677. Up to 9866 conditions per place. [2024-11-28 02:59:08,238 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 1168 selfloop transitions, 8 changer transitions 26/1353 dead transitions. [2024-11-28 02:59:08,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1353 transitions, 31973 flow [2024-11-28 02:59:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-28 02:59:08,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-28 02:59:08,240 INFO L175 Difference]: Start difference. First operand has 218 places, 1385 transitions, 30593 flow. Second operand 5 states and 95 transitions. [2024-11-28 02:59:08,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1353 transitions, 31973 flow [2024-11-28 02:59:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1353 transitions, 30868 flow, removed 201 selfloop flow, removed 5 redundant places. [2024-11-28 02:59:10,711 INFO L231 Difference]: Finished difference. Result has 219 places, 1326 transitions, 28005 flow [2024-11-28 02:59:10,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28399, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=28005, PETRI_PLACES=219, PETRI_TRANSITIONS=1326} [2024-11-28 02:59:10,713 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-11-28 02:59:10,713 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 1326 transitions, 28005 flow [2024-11-28 02:59:10,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-28 02:59:10,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:10,713 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:10,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:59:10,713 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:59:10,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1280400519, now seen corresponding path program 1 times [2024-11-28 02:59:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:10,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410915853] [2024-11-28 02:59:10,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:10,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:11,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410915853] [2024-11-28 02:59:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410915853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220391009] [2024-11-28 02:59:11,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:11,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:11,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:11,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:11,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:59:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:11,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:59:11,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:11,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:59:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:59:11,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220391009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:11,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:11,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-11-28 02:59:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49925255] [2024-11-28 02:59:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:11,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:11,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:11,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:59:11,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-28 02:59:11,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1326 transitions, 28005 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-28 02:59:11,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:11,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-28 02:59:11,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:16,963 INFO L124 PetriNetUnfolderBase]: 5344/11048 cut-off events. [2024-11-28 02:59:16,963 INFO L125 PetriNetUnfolderBase]: For 228593/229015 co-relation queries the response was YES. [2024-11-28 02:59:17,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96647 conditions, 11048 events. 5344/11048 cut-off events. For 228593/229015 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 88442 event pairs, 534 based on Foata normal form. 156/11100 useless extension candidates. Maximal degree in co-relation 96567. Up to 3895 conditions per place. [2024-11-28 02:59:17,276 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 1071 selfloop transitions, 392 changer transitions 0/1629 dead transitions. [2024-11-28 02:59:17,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1629 transitions, 37694 flow [2024-11-28 02:59:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-28 02:59:17,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2024-11-28 02:59:17,277 INFO L175 Difference]: Start difference. First operand has 219 places, 1326 transitions, 28005 flow. Second operand 6 states and 122 transitions. [2024-11-28 02:59:17,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1629 transitions, 37694 flow [2024-11-28 02:59:18,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1629 transitions, 36828 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-11-28 02:59:18,921 INFO L231 Difference]: Finished difference. Result has 205 places, 1322 transitions, 27926 flow [2024-11-28 02:59:18,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26957, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=27926, PETRI_PLACES=205, PETRI_TRANSITIONS=1322} [2024-11-28 02:59:18,923 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 172 predicate places. [2024-11-28 02:59:18,923 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 1322 transitions, 27926 flow [2024-11-28 02:59:18,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-28 02:59:18,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:18,923 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:18,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:19,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:19,124 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:59:19,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -441529031, now seen corresponding path program 2 times [2024-11-28 02:59:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749299816] [2024-11-28 02:59:19,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:19,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:19,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:19,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:19,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749299816] [2024-11-28 02:59:19,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749299816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:19,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67171402] [2024-11-28 02:59:19,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:19,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:19,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:19,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:59:19,794 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:19,795 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:19,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:59:19,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:19,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:59:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:59:19,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67171402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:19,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:19,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-28 02:59:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803953224] [2024-11-28 02:59:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:19,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:19,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:19,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:59:19,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-28 02:59:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1322 transitions, 27926 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-28 02:59:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:19,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-28 02:59:19,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:22,283 INFO L124 PetriNetUnfolderBase]: 1449/3495 cut-off events. [2024-11-28 02:59:22,284 INFO L125 PetriNetUnfolderBase]: For 87307/87465 co-relation queries the response was YES. [2024-11-28 02:59:22,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32119 conditions, 3495 events. 1449/3495 cut-off events. For 87307/87465 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24669 event pairs, 96 based on Foata normal form. 144/3601 useless extension candidates. Maximal degree in co-relation 32044. Up to 1005 conditions per place. [2024-11-28 02:59:22,331 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 378 selfloop transitions, 387 changer transitions 0/864 dead transitions. [2024-11-28 02:59:22,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 864 transitions, 21047 flow [2024-11-28 02:59:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:59:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:59:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-28 02:59:22,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-11-28 02:59:22,332 INFO L175 Difference]: Start difference. First operand has 205 places, 1322 transitions, 27926 flow. Second operand 7 states and 134 transitions. [2024-11-28 02:59:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 864 transitions, 21047 flow [2024-11-28 02:59:22,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 864 transitions, 17472 flow, removed 178 selfloop flow, removed 29 redundant places. [2024-11-28 02:59:22,871 INFO L231 Difference]: Finished difference. Result has 182 places, 851 transitions, 16893 flow [2024-11-28 02:59:22,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14391, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16893, PETRI_PLACES=182, PETRI_TRANSITIONS=851} [2024-11-28 02:59:22,873 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2024-11-28 02:59:22,873 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 851 transitions, 16893 flow [2024-11-28 02:59:22,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-28 02:59:22,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:22,874 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:22,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:59:23,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:23,077 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:59:23,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 531075098, now seen corresponding path program 1 times [2024-11-28 02:59:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594821295] [2024-11-28 02:59:23,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594821295] [2024-11-28 02:59:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594821295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016657366] [2024-11-28 02:59:23,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:23,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:23,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:59:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:23,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:59:23,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:23,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 02:59:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:23,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:24,201 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:59:24,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2024-11-28 02:59:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016657366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:24,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-28 02:59:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927155909] [2024-11-28 02:59:24,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:24,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:59:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:24,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:59:24,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:59:24,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-28 02:59:24,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 851 transitions, 16893 flow. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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) [2024-11-28 02:59:24,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:24,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-28 02:59:24,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:26,252 INFO L124 PetriNetUnfolderBase]: 1549/3602 cut-off events. [2024-11-28 02:59:26,252 INFO L125 PetriNetUnfolderBase]: For 57973/58003 co-relation queries the response was YES. [2024-11-28 02:59:26,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30188 conditions, 3602 events. 1549/3602 cut-off events. For 57973/58003 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 24905 event pairs, 55 based on Foata normal form. 42/3643 useless extension candidates. Maximal degree in co-relation 30124. Up to 1325 conditions per place. [2024-11-28 02:59:26,276 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 0 selfloop transitions, 0 changer transitions 934/934 dead transitions. [2024-11-28 02:59:26,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 934 transitions, 20090 flow [2024-11-28 02:59:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:59:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:59:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-11-28 02:59:26,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34864864864864864 [2024-11-28 02:59:26,277 INFO L175 Difference]: Start difference. First operand has 182 places, 851 transitions, 16893 flow. Second operand 10 states and 129 transitions. [2024-11-28 02:59:26,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 934 transitions, 20090 flow [2024-11-28 02:59:26,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 934 transitions, 19110 flow, removed 264 selfloop flow, removed 6 redundant places. [2024-11-28 02:59:26,614 INFO L231 Difference]: Finished difference. Result has 183 places, 0 transitions, 0 flow [2024-11-28 02:59:26,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15990, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=183, PETRI_TRANSITIONS=0} [2024-11-28 02:59:26,615 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 150 predicate places. [2024-11-28 02:59:26,615 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 0 transitions, 0 flow [2024-11-28 02:59:26,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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) [2024-11-28 02:59:26,618 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 02:59:26,618 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-28 02:59:26,618 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-28 02:59:26,618 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 02:59:26,619 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 02:59:26,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:59:26,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:59:26,819 INFO L422 BasicCegarLoop]: Path program histogram: [7, 7, 2, 1, 1, 1, 1, 1] [2024-11-28 02:59:26,826 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:59:26,826 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:59:26,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:26 BasicIcfg [2024-11-28 02:59:26,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:59:26,834 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:59:26,834 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:59:26,835 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:59:26,836 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11" (3/4) ... [2024-11-28 02:59:26,838 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:59:26,843 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-28 02:59:26,851 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-28 02:59:26,851 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-28 02:59:26,851 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-28 02:59:26,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:59:26,961 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:59:26,961 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:59:26,961 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:59:26,962 INFO L158 Benchmark]: Toolchain (without parser) took 77485.98ms. Allocated memory was 117.4MB in the beginning and 7.6GB in the end (delta: 7.5GB). Free memory was 91.7MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 02:59:26,964 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:59:26,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.50ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.0MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:59:26,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.98ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:59:26,965 INFO L158 Benchmark]: Boogie Preprocessor took 64.11ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:59:26,966 INFO L158 Benchmark]: RCFGBuilder took 887.41ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 89.9MB in the end (delta: -22.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2024-11-28 02:59:26,966 INFO L158 Benchmark]: TraceAbstraction took 75706.31ms. Allocated memory was 117.4MB in the beginning and 7.6GB in the end (delta: 7.5GB). Free memory was 89.3MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 02:59:26,967 INFO L158 Benchmark]: Witness Printer took 127.40ms. Allocated memory is still 7.6GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:59:26,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.50ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 71.0MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.98ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.11ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 887.41ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 89.9MB in the end (delta: -22.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 75706.31ms. Allocated memory was 117.4MB in the beginning and 7.6GB in the end (delta: 7.5GB). Free memory was 89.3MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 127.40ms. Allocated memory is still 7.6GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 5 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: 75.5s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 62.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1489 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1437 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 349 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4921 IncrementalHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 72 mSDtfsCounter, 4921 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 200 SyntacticMatches, 6 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30593occurred in iteration=17, InterpolantAutomatonStates: 186, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 489 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 527 ConstructedInterpolants, 2 QuantifiedInterpolants, 3896 SizeOfPredicates, 63 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 31/56 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:59:26,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dea5b89-4c27-4ee6-b397-aa1f274b3e92/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE