./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya --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 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:48:48,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:48:48,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:48:48,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:48:48,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:48:48,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:48:48,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:48:48,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:48:48,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:48:48,961 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:48:48,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:48:48,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:48:48,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:48:48,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:48:48,964 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:48:48,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:48:48,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:48:48,965 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:48:48,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:48:48,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:48:48,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:48:48,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:48:48,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:48:48,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:48:48,970 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:48:48,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:48:48,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:48:48,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:48:48,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:48:48,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:48:48,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:48:48,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:48,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:48:48,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:48:48,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:48:48,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:48:48,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:48:48,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:48:48,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:48:48,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:48:48,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:48:48,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:48:48,975 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-11-29 04:48:49,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:48:49,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:48:49,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:48:49,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:48:49,236 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:48:49,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-29 04:48:51,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:48:52,161 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:48:52,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-29 04:48:52,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/data/b2da0ea0f/ec708b07c2cc4ec08e15ea6ab68352b9/FLAG16bb47609 [2023-11-29 04:48:52,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/data/b2da0ea0f/ec708b07c2cc4ec08e15ea6ab68352b9 [2023-11-29 04:48:52,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:48:52,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:48:52,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:52,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:48:52,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:48:52,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215880bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52, skipping insertion in model container [2023-11-29 04:48:52,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:48:52,365 WARN L240 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_84b37732-eef8-4cf9-90f5-d77f84d627bc/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-29 04:48:52,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:52,416 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:48:52,426 WARN L240 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_84b37732-eef8-4cf9-90f5-d77f84d627bc/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-29 04:48:52,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:52,463 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:48:52,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52 WrapperNode [2023-11-29 04:48:52,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:52,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:52,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:48:52,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:48:52,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,501 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-11-29 04:48:52,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:52,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:48:52,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:48:52,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:48:52,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,528 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]. [2023-11-29 04:48:52,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:48:52,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:48:52,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:48:52,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:48:52,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (1/1) ... [2023-11-29 04:48:52,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:52,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:52,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:48:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:48:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:48:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 04:48:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 04:48:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:48:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-29 04:48:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-29 04:48:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-29 04:48:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-29 04:48:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:48:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:48:52,685 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:48:52,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:48:52,911 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:48:52,954 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:48:52,954 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:48:52,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:52 BoogieIcfgContainer [2023-11-29 04:48:52,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:48:52,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:48:52,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:48:52,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:48:52,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:48:52" (1/3) ... [2023-11-29 04:48:52,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b53ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:52, skipping insertion in model container [2023-11-29 04:48:52,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:52" (2/3) ... [2023-11-29 04:48:52,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b53ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:52, skipping insertion in model container [2023-11-29 04:48:52,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:52" (3/3) ... [2023-11-29 04:48:52,964 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-11-29 04:48:52,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:48:52,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:48:53,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:48:53,064 INFO L357 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, mHoare=true, 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;@72f4e49c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:48:53,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:48:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 55 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:48:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 04:48:53,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:53,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:53,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1465784770, now seen corresponding path program 1 times [2023-11-29 04:48:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:53,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116207314] [2023-11-29 04:48:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 04:48:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116207314] [2023-11-29 04:48:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116207314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:53,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657874356] [2023-11-29 04:48:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:53,370 INFO L87 Difference]: Start difference. First operand has 63 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 55 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:53,545 INFO L93 Difference]: Finished difference Result 186 states and 297 transitions. [2023-11-29 04:48:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-11-29 04:48:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:53,559 INFO L225 Difference]: With dead ends: 186 [2023-11-29 04:48:53,560 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 04:48:53,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:53,567 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 91 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:53,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 213 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 04:48:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2023-11-29 04:48:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 103 states have internal predecessors, (145), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 04:48:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 169 transitions. [2023-11-29 04:48:53,626 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 169 transitions. Word has length 36 [2023-11-29 04:48:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:53,627 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 169 transitions. [2023-11-29 04:48:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 169 transitions. [2023-11-29 04:48:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 04:48:53,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:53,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:53,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:48:53,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 76557616, now seen corresponding path program 1 times [2023-11-29 04:48:53,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:53,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141458053] [2023-11-29 04:48:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 04:48:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141458053] [2023-11-29 04:48:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141458053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:53,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834108184] [2023-11-29 04:48:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:53,736 INFO L87 Difference]: Start difference. First operand 117 states and 169 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:53,865 INFO L93 Difference]: Finished difference Result 351 states and 513 transitions. [2023-11-29 04:48:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-11-29 04:48:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:53,870 INFO L225 Difference]: With dead ends: 351 [2023-11-29 04:48:53,870 INFO L226 Difference]: Without dead ends: 240 [2023-11-29 04:48:53,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:53,873 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 108 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:53,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 189 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-29 04:48:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2023-11-29 04:48:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 188 states have (on average 1.398936170212766) internal successors, (263), 191 states have internal predecessors, (263), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (28), 16 states have call predecessors, (28), 16 states have call successors, (28) [2023-11-29 04:48:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 309 transitions. [2023-11-29 04:48:53,910 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 309 transitions. Word has length 37 [2023-11-29 04:48:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:53,910 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 309 transitions. [2023-11-29 04:48:53,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 309 transitions. [2023-11-29 04:48:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 04:48:53,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:53,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:53,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:48:53,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:53,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1856672701, now seen corresponding path program 1 times [2023-11-29 04:48:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439366819] [2023-11-29 04:48:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 04:48:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:53,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439366819] [2023-11-29 04:48:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439366819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:53,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377954948] [2023-11-29 04:48:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:53,996 INFO L87 Difference]: Start difference. First operand 217 states and 309 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:54,134 INFO L93 Difference]: Finished difference Result 637 states and 890 transitions. [2023-11-29 04:48:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-29 04:48:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:54,139 INFO L225 Difference]: With dead ends: 637 [2023-11-29 04:48:54,139 INFO L226 Difference]: Without dead ends: 426 [2023-11-29 04:48:54,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:54,142 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 91 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:54,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 225 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-29 04:48:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 322. [2023-11-29 04:48:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 281 states have (on average 1.395017793594306) internal successors, (392), 286 states have internal predecessors, (392), 24 states have call successors, (24), 15 states have call predecessors, (24), 16 states have return successors, (34), 20 states have call predecessors, (34), 22 states have call successors, (34) [2023-11-29 04:48:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2023-11-29 04:48:54,185 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 38 [2023-11-29 04:48:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:54,185 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2023-11-29 04:48:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:48:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2023-11-29 04:48:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:48:54,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:54,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:48:54,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:54,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2006311882, now seen corresponding path program 1 times [2023-11-29 04:48:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:54,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69580009] [2023-11-29 04:48:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 04:48:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:48:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:48:54,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:54,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69580009] [2023-11-29 04:48:54,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69580009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:54,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:54,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:54,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251635644] [2023-11-29 04:48:54,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:54,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:54,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:54,290 INFO L87 Difference]: Start difference. First operand 322 states and 450 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:48:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:54,428 INFO L93 Difference]: Finished difference Result 838 states and 1167 transitions. [2023-11-29 04:48:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2023-11-29 04:48:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:54,432 INFO L225 Difference]: With dead ends: 838 [2023-11-29 04:48:54,433 INFO L226 Difference]: Without dead ends: 522 [2023-11-29 04:48:54,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:54,435 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 76 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:54,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 272 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-29 04:48:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 488. [2023-11-29 04:48:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 423 states have (on average 1.342789598108747) internal successors, (568), 430 states have internal predecessors, (568), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (58), 34 states have call predecessors, (58), 36 states have call successors, (58) [2023-11-29 04:48:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 664 transitions. [2023-11-29 04:48:54,480 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 664 transitions. Word has length 53 [2023-11-29 04:48:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:54,481 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 664 transitions. [2023-11-29 04:48:54,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:48:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 664 transitions. [2023-11-29 04:48:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:48:54,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:54,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:54,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:48:54,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:54,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash -6908331, now seen corresponding path program 1 times [2023-11-29 04:48:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619272739] [2023-11-29 04:48:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 04:48:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 04:48:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:48:54,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619272739] [2023-11-29 04:48:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619272739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:54,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425257295] [2023-11-29 04:48:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:54,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:54,554 INFO L87 Difference]: Start difference. First operand 488 states and 664 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:48:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:54,691 INFO L93 Difference]: Finished difference Result 1067 states and 1443 transitions. [2023-11-29 04:48:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:54,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2023-11-29 04:48:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:54,698 INFO L225 Difference]: With dead ends: 1067 [2023-11-29 04:48:54,698 INFO L226 Difference]: Without dead ends: 665 [2023-11-29 04:48:54,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:54,701 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 94 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 201 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-29 04:48:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 616. [2023-11-29 04:48:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 535 states have (on average 1.314018691588785) internal successors, (703), 544 states have internal predecessors, (703), 46 states have call successors, (46), 29 states have call predecessors, (46), 34 states have return successors, (72), 42 states have call predecessors, (72), 44 states have call successors, (72) [2023-11-29 04:48:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 821 transitions. [2023-11-29 04:48:54,752 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 821 transitions. Word has length 58 [2023-11-29 04:48:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:54,753 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 821 transitions. [2023-11-29 04:48:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:48:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 821 transitions. [2023-11-29 04:48:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 04:48:54,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:54,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:54,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:48:54,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:54,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1580994309, now seen corresponding path program 1 times [2023-11-29 04:48:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111840574] [2023-11-29 04:48:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 04:48:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 04:48:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:54,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111840574] [2023-11-29 04:48:54,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111840574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156819629] [2023-11-29 04:48:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:54,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:54,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:48:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:54,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:48:54,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:55,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:48:55,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156819629] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:55,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:55,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-11-29 04:48:55,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256130132] [2023-11-29 04:48:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:48:55,118 INFO L87 Difference]: Start difference. First operand 616 states and 821 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:48:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:55,216 INFO L93 Difference]: Finished difference Result 666 states and 883 transitions. [2023-11-29 04:48:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:55,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2023-11-29 04:48:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:55,221 INFO L225 Difference]: With dead ends: 666 [2023-11-29 04:48:55,222 INFO L226 Difference]: Without dead ends: 663 [2023-11-29 04:48:55,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:48:55,223 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 156 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:55,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 151 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-29 04:48:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 615. [2023-11-29 04:48:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 535 states have (on average 1.3102803738317756) internal successors, (701), 543 states have internal predecessors, (701), 45 states have call successors, (45), 29 states have call predecessors, (45), 34 states have return successors, (72), 42 states have call predecessors, (72), 44 states have call successors, (72) [2023-11-29 04:48:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 818 transitions. [2023-11-29 04:48:55,280 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 818 transitions. Word has length 59 [2023-11-29 04:48:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:55,280 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 818 transitions. [2023-11-29 04:48:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:48:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 818 transitions. [2023-11-29 04:48:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 04:48:55,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:55,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:55,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:55,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:55,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:55,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1765859992, now seen corresponding path program 1 times [2023-11-29 04:48:55,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408888560] [2023-11-29 04:48:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 04:48:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 04:48:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:55,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408888560] [2023-11-29 04:48:55,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408888560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196234699] [2023-11-29 04:48:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:55,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:55,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:55,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:55,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:48:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:55,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:48:55,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:55,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:48:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196234699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:56,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-11-29 04:48:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057434208] [2023-11-29 04:48:56,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:48:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:48:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:48:56,034 INFO L87 Difference]: Start difference. First operand 615 states and 818 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 04:48:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:56,675 INFO L93 Difference]: Finished difference Result 1960 states and 2646 transitions. [2023-11-29 04:48:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:48:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 60 [2023-11-29 04:48:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:56,683 INFO L225 Difference]: With dead ends: 1960 [2023-11-29 04:48:56,684 INFO L226 Difference]: Without dead ends: 1478 [2023-11-29 04:48:56,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:48:56,686 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 333 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:56,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 968 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:48:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-29 04:48:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 951. [2023-11-29 04:48:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 832 states have (on average 1.3004807692307692) internal successors, (1082), 848 states have internal predecessors, (1082), 65 states have call successors, (65), 43 states have call predecessors, (65), 53 states have return successors, (106), 59 states have call predecessors, (106), 64 states have call successors, (106) [2023-11-29 04:48:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1253 transitions. [2023-11-29 04:48:56,749 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1253 transitions. Word has length 60 [2023-11-29 04:48:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:56,749 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1253 transitions. [2023-11-29 04:48:56,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 04:48:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1253 transitions. [2023-11-29 04:48:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:48:56,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:56,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:56,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:56,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:56,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:56,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1463774967, now seen corresponding path program 1 times [2023-11-29 04:48:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121740839] [2023-11-29 04:48:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 04:48:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 04:48:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 04:48:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 04:48:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121740839] [2023-11-29 04:48:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121740839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573991168] [2023-11-29 04:48:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:57,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:57,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:57,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:57,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:48:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:57,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:48:57,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:57,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573991168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:57,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:48:57,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:48:57,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144720252] [2023-11-29 04:48:57,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:57,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:57,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:57,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:57,185 INFO L87 Difference]: Start difference. First operand 951 states and 1253 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:48:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:57,258 INFO L93 Difference]: Finished difference Result 1583 states and 2100 transitions. [2023-11-29 04:48:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 77 [2023-11-29 04:48:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:57,264 INFO L225 Difference]: With dead ends: 1583 [2023-11-29 04:48:57,264 INFO L226 Difference]: Without dead ends: 843 [2023-11-29 04:48:57,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:57,267 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:57,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 168 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-11-29 04:48:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 828. [2023-11-29 04:48:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 725 states have (on average 1.293793103448276) internal successors, (938), 740 states have internal predecessors, (938), 57 states have call successors, (57), 37 states have call predecessors, (57), 45 states have return successors, (92), 50 states have call predecessors, (92), 56 states have call successors, (92) [2023-11-29 04:48:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1087 transitions. [2023-11-29 04:48:57,355 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1087 transitions. Word has length 77 [2023-11-29 04:48:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:57,355 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1087 transitions. [2023-11-29 04:48:57,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:48:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1087 transitions. [2023-11-29 04:48:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:48:57,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:57,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:57,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:48:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:57,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:57,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 4825838, now seen corresponding path program 1 times [2023-11-29 04:48:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:57,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622975315] [2023-11-29 04:48:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:57,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:48:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 04:48:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 04:48:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 04:48:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 04:48:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:48:57,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622975315] [2023-11-29 04:48:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622975315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256717580] [2023-11-29 04:48:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:57,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:57,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:57,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:48:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:48:57,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:48:57,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256717580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:57,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:48:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:48:57,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248106835] [2023-11-29 04:48:57,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:57,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:57,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:57,815 INFO L87 Difference]: Start difference. First operand 828 states and 1087 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:48:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:57,873 INFO L93 Difference]: Finished difference Result 1162 states and 1510 transitions. [2023-11-29 04:48:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 91 [2023-11-29 04:48:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:57,874 INFO L225 Difference]: With dead ends: 1162 [2023-11-29 04:48:57,875 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:48:57,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:57,878 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 56 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:57,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 169 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:48:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:48:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-29 04:48:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:48:57,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2023-11-29 04:48:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:57,879 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:48:57,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:48:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:48:57,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:48:57,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:48:57,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:58,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:58,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 04:48:59,529 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-11-29 04:48:59,529 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-11-29 04:48:59,529 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-11-29 04:48:59,530 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 76 100) the Hoare annotation is: (let ((.cse3 (= |old(~p_dw_st~0)| ~p_dw_st~0))) (let ((.cse0 (and .cse3 (= ~c_dr_st~0 |old(~c_dr_st~0)|))) (.cse1 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse2 (not (= ~q_free~0 0)))) (and (or (not (= ~p_num_write~0 1)) (not (= ~c_dr_pc~0 0)) .cse0 (not (= ~p_dw_pc~0 0)) .cse1 (not (= ~c_num_read~0 0)) .cse2) (or .cse0 .cse1 (not (= ~c_num_read~0 ~p_num_write~0)) (not (= ~q_free~0 1)) (not (= ~c_last_read~0 ~p_last_write~0)) (< |old(~p_dw_st~0)| 2)) (or (not (= 2 |old(~c_dr_st~0)|)) .cse1 .cse2 (and .cse3 (= ~c_dr_st~0 2)) (not (= (+ ~c_num_read~0 1) ~p_num_write~0)))))) [2023-11-29 04:48:59,530 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-11-29 04:48:59,530 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-11-29 04:48:59,530 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 96) no Hoare annotation was computed. [2023-11-29 04:48:59,530 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L92-2(lines 76 100) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 88) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L84-2(lines 84 88) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-11-29 04:48:59,531 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-11-29 04:48:59,532 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 234) no Hoare annotation was computed. [2023-11-29 04:48:59,532 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-11-29 04:48:59,532 INFO L899 garLoopResultBuilder]: For program point L236(lines 223 238) no Hoare annotation was computed. [2023-11-29 04:48:59,532 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-11-29 04:48:59,532 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2023-11-29 04:48:59,532 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-11-29 04:48:59,533 INFO L895 garLoopResultBuilder]: At program point L192-1(lines 160 195) the Hoare annotation is: (let ((.cse2 (= ~c_num_read~0 ~p_num_write~0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~q_free~0 1)) (.cse4 (= ~c_last_read~0 ~p_last_write~0)) (.cse1 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse1) (and .cse2 .cse0 .cse3 (= ~p_dw_st~0 0) .cse4) (and .cse2 .cse0 .cse3 .cse4 .cse1))) [2023-11-29 04:48:59,533 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-29 04:48:59,533 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-11-29 04:48:59,534 INFO L895 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-29 04:48:59,534 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-11-29 04:48:59,534 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-11-29 04:48:59,534 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-11-29 04:48:59,534 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-11-29 04:48:59,534 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L309(lines 298 311) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-11-29 04:48:59,535 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 202 219) no Hoare annotation was computed. [2023-11-29 04:48:59,536 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 307) no Hoare annotation was computed. [2023-11-29 04:48:59,536 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 04:48:59,536 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-11-29 04:48:59,536 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-11-29 04:48:59,536 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-29 04:48:59,537 INFO L895 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (and (= ~c_num_read~0 ~p_num_write~0) (= ~p_last_write~0 ~q_buf_0~0) (= ~q_free~0 1) (= ~c_last_read~0 ~p_last_write~0) (<= 2 ~p_dw_st~0)) [2023-11-29 04:48:59,537 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-11-29 04:48:59,537 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-11-29 04:48:59,537 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-11-29 04:48:59,537 INFO L895 garLoopResultBuilder]: At program point L272(lines 247 287) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-29 04:48:59,537 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 210) no Hoare annotation was computed. [2023-11-29 04:48:59,537 INFO L899 garLoopResultBuilder]: For program point L206-2(lines 205 218) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L895 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-11-29 04:48:59,538 INFO L895 garLoopResultBuilder]: At program point L323-2(lines 323 335) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-29 04:48:59,538 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-11-29 04:48:59,539 INFO L895 garLoopResultBuilder]: At program point L117-1(lines 117 137) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~q_free~0 0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and (= ~p_dw_pc~0 0) (= ~p_num_write~0 0) (= ~c_num_read~0 0) .cse1 .cse2 (= ~c_dr_pc~0 0) (= ~c_last_read~0 ~p_last_write~0)) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse3))) [2023-11-29 04:48:59,539 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-11-29 04:48:59,539 INFO L895 garLoopResultBuilder]: At program point L134(line 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0))) (or (and (= ~c_dr_st~0 2) .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1) (and (= ~p_dw_pc~0 0) (= ~c_num_read~0 0) .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_num_write~0 1)))) [2023-11-29 04:48:59,539 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-11-29 04:48:59,539 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-11-29 04:48:59,539 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-11-29 04:48:59,539 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-29 04:48:59,542 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:59,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:48:59,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:48:59 BoogieIcfgContainer [2023-11-29 04:48:59,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:48:59,567 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:48:59,567 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:48:59,567 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:48:59,568 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:52" (3/4) ... [2023-11-29 04:48:59,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:48:59,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-11-29 04:48:59,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-11-29 04:48:59,574 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-11-29 04:48:59,580 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-29 04:48:59,581 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 04:48:59,581 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:48:59,582 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:48:59,698 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:48:59,699 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:48:59,699 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:48:59,700 INFO L158 Benchmark]: Toolchain (without parser) took 7509.32ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 86.9MB in the beginning and 168.3MB in the end (delta: -81.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:48:59,700 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:48:59,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.47ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 74.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.65ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 72.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,701 INFO L158 Benchmark]: Boogie Preprocessor took 42.03ms. Allocated memory is still 132.1MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,702 INFO L158 Benchmark]: RCFGBuilder took 409.63ms. Allocated memory is still 132.1MB. Free memory was 70.3MB in the beginning and 52.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,702 INFO L158 Benchmark]: TraceAbstraction took 6609.10ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 51.5MB in the beginning and 175.6MB in the end (delta: -124.1MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,703 INFO L158 Benchmark]: Witness Printer took 132.52ms. Allocated memory is still 205.5MB. Free memory was 175.6MB in the beginning and 168.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:48:59,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.47ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 74.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.65ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 72.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.03ms. Allocated memory is still 132.1MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.63ms. Allocated memory is still 132.1MB. Free memory was 70.3MB in the beginning and 52.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6609.10ms. Allocated memory was 132.1MB in the beginning and 205.5MB in the end (delta: 73.4MB). Free memory was 51.5MB in the beginning and 175.6MB in the end (delta: -124.1MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Witness Printer took 132.52ms. Allocated memory is still 205.5MB. Free memory was 175.6MB in the beginning and 168.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 CFG has 4 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1066 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1054 mSDsluCounter, 2556 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1577 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 805 IncrementalHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 979 mSDtfsCounter, 805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=951occurred in iteration=7, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 806 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 260 PreInvPairs, 328 NumberOfFragments, 691 HoareAnnotationTreeSize, 260 FomulaSimplifications, 379 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3187 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 796 NumberOfCodeBlocks, 796 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 900 ConstructedInterpolants, 0 QuantifiedInterpolants, 1696 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1015 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 241/301 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: (((((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0))) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: (((((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0))) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) || (((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0))) || (((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || (((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0))) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_last_read == p_last_write))) || (((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) RESULT: Ultimate proved your program to be correct! [2023-11-29 04:48:59,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b37732-eef8-4cf9-90f5-d77f84d627bc/bin/uautomizer-verify-BQ2R08f2Ya/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 Result: TRUE