./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/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_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/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_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:02:17,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:02:17,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:02:17,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:02:17,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:02:17,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:02:17,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:02:17,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:02:17,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:02:17,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:02:17,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:02:17,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:02:17,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:02:17,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:02:17,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:02:17,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:02:17,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:02:17,672 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:02:17,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:02:17,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:02:17,673 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:02:17,674 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:02:17,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:17,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:17,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:17,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:17,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:17,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:02:17,675 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:02:17,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:02:17,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:02:17,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:02:17,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:02:17,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:02:17,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:02:17,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:02:17,679 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_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/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 -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-11-28 04:02:18,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:02:18,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:02:18,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:02:18,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:02:18,080 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:02:18,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-28 04:02:21,943 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/data/f12f6c10b/a3bf08bfc2204fd19f08f9e65d1cbf99/FLAG48ccd7df1 [2024-11-28 04:02:22,400 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:02:22,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-28 04:02:22,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/data/f12f6c10b/a3bf08bfc2204fd19f08f9e65d1cbf99/FLAG48ccd7df1 [2024-11-28 04:02:22,451 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/data/f12f6c10b/a3bf08bfc2204fd19f08f9e65d1cbf99 [2024-11-28 04:02:22,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:02:22,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:02:22,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:22,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:02:22,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:02:22,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:22" (1/1) ... [2024-11-28 04:02:22,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405fb422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:22, skipping insertion in model container [2024-11-28 04:02:22,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:22" (1/1) ... [2024-11-28 04:02:22,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:02:22,913 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_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2024-11-28 04:02:22,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:22,938 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:02:22,995 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_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2024-11-28 04:02:23,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:23,053 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:02:23,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23 WrapperNode [2024-11-28 04:02:23,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:23,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:23,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:02:23,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:02:23,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,118 INFO L138 Inliner]: procedures = 172, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 94 [2024-11-28 04:02:23,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:23,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:02:23,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:02:23,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:02:23,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,152 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:02:23,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,160 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:02:23,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:02:23,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:02:23,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:02:23,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:23,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:23,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:02:23,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:02:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:02:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:02:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-28 04:02:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-28 04:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:02:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-28 04:02:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-28 04:02:23,270 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 04:02:23,435 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:02:23,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:02:23,732 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:02:23,733 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:02:23,947 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:02:23,947 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:02:23,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:23 BoogieIcfgContainer [2024-11-28 04:02:23,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:02:23,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:02:23,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:02:23,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:02:23,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:02:22" (1/3) ... [2024-11-28 04:02:23,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f3cf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:23, skipping insertion in model container [2024-11-28 04:02:23,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (2/3) ... [2024-11-28 04:02:23,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f3cf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:23, skipping insertion in model container [2024-11-28 04:02:23,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:23" (3/3) ... [2024-11-28 04:02:23,965 INFO L128 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-11-28 04:02:23,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:02:23,989 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 34 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:02:23,989 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:02:24,074 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 04:02:24,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 54 transitions, 136 flow [2024-11-28 04:02:24,242 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-28 04:02:24,248 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:02:24,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 2/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-28 04:02:24,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 54 transitions, 136 flow [2024-11-28 04:02:24,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 48 transitions, 117 flow [2024-11-28 04:02:24,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:24,300 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;@59001632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:24,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:02:24,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:24,331 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-11-28 04:02:24,332 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:02:24,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:24,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:24,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:24,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1720018318, now seen corresponding path program 1 times [2024-11-28 04:02:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762561063] [2024-11-28 04:02:24,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:24,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:24,836 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 04:02:24,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762561063] [2024-11-28 04:02:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762561063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:24,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:24,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556360332] [2024-11-28 04:02:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:24,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:24,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:24,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:25,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-28 04:02:25,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 04:02:25,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:25,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-28 04:02:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:29,255 INFO L124 PetriNetUnfolderBase]: 11279/20155 cut-off events. [2024-11-28 04:02:29,257 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2024-11-28 04:02:29,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37155 conditions, 20155 events. 11279/20155 cut-off events. For 1710/1710 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 173961 event pairs, 1143 based on Foata normal form. 1103/20329 useless extension candidates. Maximal degree in co-relation 32953. Up to 5230 conditions per place. [2024-11-28 04:02:29,550 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 159 selfloop transitions, 37 changer transitions 6/216 dead transitions. [2024-11-28 04:02:29,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 216 transitions, 944 flow [2024-11-28 04:02:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:02:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 452 transitions. [2024-11-28 04:02:29,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6438746438746439 [2024-11-28 04:02:29,591 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 117 flow. Second operand 13 states and 452 transitions. [2024-11-28 04:02:29,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 216 transitions, 944 flow [2024-11-28 04:02:29,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 216 transitions, 880 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 04:02:29,689 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 343 flow [2024-11-28 04:02:29,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=343, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2024-11-28 04:02:29,700 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2024-11-28 04:02:29,701 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 343 flow [2024-11-28 04:02:29,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 04:02:29,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:29,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:29,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:02:29,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:29,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 550720275, now seen corresponding path program 1 times [2024-11-28 04:02:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:29,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977002297] [2024-11-28 04:02:29,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:29,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:29,874 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 04:02:29,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:29,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977002297] [2024-11-28 04:02:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977002297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:29,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:29,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694665070] [2024-11-28 04:02:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:29,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:29,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:29,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:29,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-11-28 04:02:29,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:02:29,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:29,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-11-28 04:02:29,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:31,607 INFO L124 PetriNetUnfolderBase]: 4421/9940 cut-off events. [2024-11-28 04:02:31,608 INFO L125 PetriNetUnfolderBase]: For 1242/1384 co-relation queries the response was YES. [2024-11-28 04:02:31,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19419 conditions, 9940 events. 4421/9940 cut-off events. For 1242/1384 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 98021 event pairs, 1862 based on Foata normal form. 388/9507 useless extension candidates. Maximal degree in co-relation 18385. Up to 3454 conditions per place. [2024-11-28 04:02:31,709 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 35 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-28 04:02:31,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 457 flow [2024-11-28 04:02:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-28 04:02:31,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7469135802469136 [2024-11-28 04:02:31,713 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 343 flow. Second operand 3 states and 121 transitions. [2024-11-28 04:02:31,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 457 flow [2024-11-28 04:02:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:02:31,788 INFO L231 Difference]: Finished difference. Result has 75 places, 85 transitions, 359 flow [2024-11-28 04:02:31,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=75, PETRI_TRANSITIONS=85} [2024-11-28 04:02:31,791 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 16 predicate places. [2024-11-28 04:02:31,792 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 85 transitions, 359 flow [2024-11-28 04:02:31,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:02:31,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:31,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:31,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:02:31,793 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2143072499, now seen corresponding path program 2 times [2024-11-28 04:02:31,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080495838] [2024-11-28 04:02:31,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:31,843 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:02:31,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:32,001 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 04:02:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080495838] [2024-11-28 04:02:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080495838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819765140] [2024-11-28 04:02:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:32,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:02:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:32,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:02:32,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:02:32,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-11-28 04:02:32,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 85 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 04:02:32,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:32,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-11-28 04:02:32,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:33,768 INFO L124 PetriNetUnfolderBase]: 5047/10609 cut-off events. [2024-11-28 04:02:33,769 INFO L125 PetriNetUnfolderBase]: For 3991/4100 co-relation queries the response was YES. [2024-11-28 04:02:33,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22773 conditions, 10609 events. 5047/10609 cut-off events. For 3991/4100 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 96505 event pairs, 1477 based on Foata normal form. 116/10284 useless extension candidates. Maximal degree in co-relation 21587. Up to 3290 conditions per place. [2024-11-28 04:02:33,886 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 50 selfloop transitions, 9 changer transitions 3/123 dead transitions. [2024-11-28 04:02:33,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 123 transitions, 585 flow [2024-11-28 04:02:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:02:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:02:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-28 04:02:33,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-28 04:02:33,891 INFO L175 Difference]: Start difference. First operand has 75 places, 85 transitions, 359 flow. Second operand 4 states and 168 transitions. [2024-11-28 04:02:33,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 123 transitions, 585 flow [2024-11-28 04:02:33,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 123 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:02:34,000 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 417 flow [2024-11-28 04:02:34,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-11-28 04:02:34,003 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2024-11-28 04:02:34,003 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 417 flow [2024-11-28 04:02:34,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 04:02:34,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:34,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:34,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:02:34,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:34,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1215427923, now seen corresponding path program 1 times [2024-11-28 04:02:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:34,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600242645] [2024-11-28 04:02:34,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:34,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:34,139 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 04:02:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:34,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600242645] [2024-11-28 04:02:34,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600242645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:34,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:34,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:34,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290376711] [2024-11-28 04:02:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:34,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:34,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:34,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:34,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-28 04:02:34,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 417 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 04:02:34,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:34,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-28 04:02:34,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:37,097 INFO L124 PetriNetUnfolderBase]: 12087/20515 cut-off events. [2024-11-28 04:02:37,097 INFO L125 PetriNetUnfolderBase]: For 17083/17661 co-relation queries the response was YES. [2024-11-28 04:02:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51076 conditions, 20515 events. 12087/20515 cut-off events. For 17083/17661 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 161312 event pairs, 1864 based on Foata normal form. 307/20446 useless extension candidates. Maximal degree in co-relation 49364. Up to 4494 conditions per place. [2024-11-28 04:02:37,229 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 159 selfloop transitions, 52 changer transitions 52/288 dead transitions. [2024-11-28 04:02:37,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 288 transitions, 1739 flow [2024-11-28 04:02:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:02:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 431 transitions. [2024-11-28 04:02:37,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.613960113960114 [2024-11-28 04:02:37,234 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 417 flow. Second operand 13 states and 431 transitions. [2024-11-28 04:02:37,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 288 transitions, 1739 flow [2024-11-28 04:02:37,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 288 transitions, 1739 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:02:37,574 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 836 flow [2024-11-28 04:02:37,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=836, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-11-28 04:02:37,575 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 43 predicate places. [2024-11-28 04:02:37,575 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 836 flow [2024-11-28 04:02:37,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 04:02:37,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:37,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:37,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:02:37,580 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:37,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -52753927, now seen corresponding path program 1 times [2024-11-28 04:02:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012696806] [2024-11-28 04:02:37,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:37,722 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 04:02:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012696806] [2024-11-28 04:02:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012696806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555950142] [2024-11-28 04:02:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:37,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:37,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:37,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:37,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-28 04:02:37,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 04:02:37,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:37,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-28 04:02:37,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:40,833 INFO L124 PetriNetUnfolderBase]: 11622/20390 cut-off events. [2024-11-28 04:02:40,834 INFO L125 PetriNetUnfolderBase]: For 28865/29218 co-relation queries the response was YES. [2024-11-28 04:02:41,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59796 conditions, 20390 events. 11622/20390 cut-off events. For 28865/29218 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 167348 event pairs, 2474 based on Foata normal form. 362/20656 useless extension candidates. Maximal degree in co-relation 56600. Up to 5490 conditions per place. [2024-11-28 04:02:41,151 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 163 selfloop transitions, 66 changer transitions 15/269 dead transitions. [2024-11-28 04:02:41,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 269 transitions, 1943 flow [2024-11-28 04:02:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:02:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 410 transitions. [2024-11-28 04:02:41,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584045584045584 [2024-11-28 04:02:41,155 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 836 flow. Second operand 13 states and 410 transitions. [2024-11-28 04:02:41,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 269 transitions, 1943 flow [2024-11-28 04:02:41,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 269 transitions, 1903 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:02:41,855 INFO L231 Difference]: Finished difference. Result has 116 places, 149 transitions, 1152 flow [2024-11-28 04:02:41,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1152, PETRI_PLACES=116, PETRI_TRANSITIONS=149} [2024-11-28 04:02:41,856 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 57 predicate places. [2024-11-28 04:02:41,857 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 149 transitions, 1152 flow [2024-11-28 04:02:41,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 04:02:41,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:41,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:41,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:02:41,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:41,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 447331159, now seen corresponding path program 1 times [2024-11-28 04:02:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024059935] [2024-11-28 04:02:41,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:42,013 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 04:02:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024059935] [2024-11-28 04:02:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024059935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:42,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:42,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287036792] [2024-11-28 04:02:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:42,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:42,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:42,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:42,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-28 04:02:42,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 149 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 04:02:42,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:42,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-28 04:02:42,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:45,714 INFO L124 PetriNetUnfolderBase]: 12661/21860 cut-off events. [2024-11-28 04:02:45,714 INFO L125 PetriNetUnfolderBase]: For 36092/36542 co-relation queries the response was YES. [2024-11-28 04:02:45,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67044 conditions, 21860 events. 12661/21860 cut-off events. For 36092/36542 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 178233 event pairs, 2817 based on Foata normal form. 518/22151 useless extension candidates. Maximal degree in co-relation 64591. Up to 5895 conditions per place. [2024-11-28 04:02:45,849 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 169 selfloop transitions, 72 changer transitions 22/299 dead transitions. [2024-11-28 04:02:45,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 299 transitions, 2346 flow [2024-11-28 04:02:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:02:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 416 transitions. [2024-11-28 04:02:45,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-28 04:02:45,857 INFO L175 Difference]: Start difference. First operand has 116 places, 149 transitions, 1152 flow. Second operand 13 states and 416 transitions. [2024-11-28 04:02:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 299 transitions, 2346 flow [2024-11-28 04:02:46,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 299 transitions, 2332 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:46,291 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 1525 flow [2024-11-28 04:02:46,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1525, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2024-11-28 04:02:46,292 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 72 predicate places. [2024-11-28 04:02:46,292 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 1525 flow [2024-11-28 04:02:46,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 04:02:46,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:46,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:46,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:02:46,293 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:02:46,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:46,294 INFO L85 PathProgramCache]: Analyzing trace with hash 437649175, now seen corresponding path program 1 times [2024-11-28 04:02:46,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:46,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175466504] [2024-11-28 04:02:46,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:46,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:46,321 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:02:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:46,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:02:46,388 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:02:46,389 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-11-28 04:02:46,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-28 04:02:46,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-28 04:02:46,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-28 04:02:46,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-11-28 04:02:46,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-11-28 04:02:46,394 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-28 04:02:46,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:02:46,394 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-28 04:02:46,464 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:02:46,464 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:02:46,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:02:46 BasicIcfg [2024-11-28 04:02:46,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:02:46,470 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:02:46,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:02:46,471 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:02:46,476 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:23" (3/4) ... [2024-11-28 04:02:46,477 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:02:46,572 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 18. [2024-11-28 04:02:46,663 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:02:46,664 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:02:46,664 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:02:46,665 INFO L158 Benchmark]: Toolchain (without parser) took 24209.22ms. Allocated memory was 117.4MB in the beginning and 4.3GB in the end (delta: 4.2GB). Free memory was 90.8MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 700.4MB. Max. memory is 16.1GB. [2024-11-28 04:02:46,666 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:46,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.95ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 70.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:02:46,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.99ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:46,667 INFO L158 Benchmark]: Boogie Preprocessor took 50.88ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 67.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:46,668 INFO L158 Benchmark]: RCFGBuilder took 777.10ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 48.5MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:02:46,669 INFO L158 Benchmark]: TraceAbstraction took 22517.05ms. Allocated memory was 117.4MB in the beginning and 4.3GB in the end (delta: 4.2GB). Free memory was 47.8MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 658.5MB. Max. memory is 16.1GB. [2024-11-28 04:02:46,670 INFO L158 Benchmark]: Witness Printer took 193.97ms. Allocated memory is still 4.3GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:02:46,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.95ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 70.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.99ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.88ms. Allocated memory is still 117.4MB. Free memory was 69.2MB in the beginning and 67.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 777.10ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 48.5MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22517.05ms. Allocated memory was 117.4MB in the beginning and 4.3GB in the end (delta: 4.2GB). Free memory was 47.8MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 658.5MB. Max. memory is 16.1GB. * Witness Printer took 193.97ms. Allocated memory is still 4.3GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1=-3, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, w=0, x=0, y=0] [L724] 2 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, t1=-3, t2=-2, t3=-1, t4=0, w=0, x=0, y=0] [L724] 4 int l; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L743] 2 r = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L727] 4 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L730] 4 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L733] 4 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L716] 1 x = 3 VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] [L738] 4 reach_error() VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 76 locations, 7 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: 22.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 627 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1757 IncrementalHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 84 mSDtfsCounter, 1757 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1525occurred in iteration=6, InterpolantAutomatonStates: 59, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:02:46,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c64d128-ea70-4eb8-b4d7-a305cb9e8a18/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE