./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/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_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme --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 [2023-11-26 11:45:03,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:03,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:03,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:03,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:03,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:03,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:03,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:03,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:03,640 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:03,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:03,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:03,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:03,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:03,645 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:03,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:03,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:03,646 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:03,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:03,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:03,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:03,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:03,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:03,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:03,650 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:03,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:03,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:03,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:03,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:03,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:03,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:03,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:03,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:03,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:03,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:03,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:03,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:03,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:03,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:03,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:03,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:03,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:03,658 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_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-11-26 11:45:03,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:03,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:03,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:03,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:04,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:04,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-26 11:45:07,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:07,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:07,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-26 11:45:07,435 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/data/bae41128a/739dd66f7acf46b2b3378688ff4c973d/FLAGd57da6a02 [2023-11-26 11:45:07,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/data/bae41128a/739dd66f7acf46b2b3378688ff4c973d [2023-11-26 11:45:07,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:07,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:07,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:07,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:07,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:07,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3223896d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07, skipping insertion in model container [2023-11-26 11:45:07,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:07,703 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_abd6c207-9f8d-409c-8be5-883ffa6d17c7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-26 11:45:07,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:07,766 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:07,779 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_abd6c207-9f8d-409c-8be5-883ffa6d17c7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-26 11:45:07,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:07,818 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:07,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07 WrapperNode [2023-11-26 11:45:07,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:07,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:07,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:07,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:07,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,865 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-11-26 11:45:07,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:07,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:07,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:07,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:07,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,893 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]. [2023-11-26 11:45:07,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:07,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:07,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:07,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:07,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (1/1) ... [2023-11-26 11:45:07,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:07,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:07,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:07,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-26 11:45:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-26 11:45:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-26 11:45:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-26 11:45:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-26 11:45:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-26 11:45:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:08,085 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:08,088 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:08,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:08,416 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:08,424 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:45:08,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:08 BoogieIcfgContainer [2023-11-26 11:45:08,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:08,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:08,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:08,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:08,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:07" (1/3) ... [2023-11-26 11:45:08,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59150e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:08, skipping insertion in model container [2023-11-26 11:45:08,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:07" (2/3) ... [2023-11-26 11:45:08,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59150e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:08, skipping insertion in model container [2023-11-26 11:45:08,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:08" (3/3) ... [2023-11-26 11:45:08,440 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-11-26 11:45:08,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:08,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:08,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:08,557 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;@33c1015f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:08,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:08,562 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) [2023-11-26 11:45:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:45:08,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:08,573 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] [2023-11-26 11:45:08,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:08,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1465784770, now seen corresponding path program 1 times [2023-11-26 11:45:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263628769] [2023-11-26 11:45:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263628769] [2023-11-26 11:45:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263628769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177547856] [2023-11-26 11:45:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:09,036 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) [2023-11-26 11:45:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:09,297 INFO L93 Difference]: Finished difference Result 186 states and 297 transitions. [2023-11-26 11:45:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:09,300 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 [2023-11-26 11:45:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:09,312 INFO L225 Difference]: With dead ends: 186 [2023-11-26 11:45:09,312 INFO L226 Difference]: Without dead ends: 123 [2023-11-26 11:45:09,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:09,320 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:09,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 213 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-26 11:45:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2023-11-26 11:45:09,390 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) [2023-11-26 11:45:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 169 transitions. [2023-11-26 11:45:09,398 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 169 transitions. Word has length 36 [2023-11-26 11:45:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 169 transitions. [2023-11-26 11:45:09,400 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) [2023-11-26 11:45:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 169 transitions. [2023-11-26 11:45:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:45:09,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:09,406 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] [2023-11-26 11:45:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:09,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:09,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash 76557616, now seen corresponding path program 1 times [2023-11-26 11:45:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135345449] [2023-11-26 11:45:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:09,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:09,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135345449] [2023-11-26 11:45:09,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135345449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:09,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:09,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676100158] [2023-11-26 11:45:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:09,528 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) [2023-11-26 11:45:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:09,697 INFO L93 Difference]: Finished difference Result 351 states and 513 transitions. [2023-11-26 11:45:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:09,698 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 [2023-11-26 11:45:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:09,702 INFO L225 Difference]: With dead ends: 351 [2023-11-26 11:45:09,702 INFO L226 Difference]: Without dead ends: 240 [2023-11-26 11:45:09,704 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 [2023-11-26 11:45:09,706 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 [2023-11-26 11:45:09,707 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] [2023-11-26 11:45:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-26 11:45:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2023-11-26 11:45:09,743 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) [2023-11-26 11:45:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 309 transitions. [2023-11-26 11:45:09,751 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 309 transitions. Word has length 37 [2023-11-26 11:45:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:09,752 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 309 transitions. [2023-11-26 11:45:09,752 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) [2023-11-26 11:45:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 309 transitions. [2023-11-26 11:45:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:45:09,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:09,760 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] [2023-11-26 11:45:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:09,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:09,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1856672701, now seen corresponding path program 1 times [2023-11-26 11:45:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555594039] [2023-11-26 11:45:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:45:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555594039] [2023-11-26 11:45:09,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555594039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:09,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996378352] [2023-11-26 11:45:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:09,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:09,934 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) [2023-11-26 11:45:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:10,131 INFO L93 Difference]: Finished difference Result 637 states and 890 transitions. [2023-11-26 11:45:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:10,132 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 [2023-11-26 11:45:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:10,141 INFO L225 Difference]: With dead ends: 637 [2023-11-26 11:45:10,141 INFO L226 Difference]: Without dead ends: 426 [2023-11-26 11:45:10,143 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 [2023-11-26 11:45:10,145 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 [2023-11-26 11:45:10,146 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] [2023-11-26 11:45:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-26 11:45:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 322. [2023-11-26 11:45:10,199 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) [2023-11-26 11:45:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2023-11-26 11:45:10,203 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 38 [2023-11-26 11:45:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:10,204 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2023-11-26 11:45:10,204 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) [2023-11-26 11:45:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2023-11-26 11:45:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:45:10,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:10,208 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] [2023-11-26 11:45:10,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:10,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:10,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2006311882, now seen corresponding path program 1 times [2023-11-26 11:45:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745353121] [2023-11-26 11:45:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:45:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:45:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:10,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745353121] [2023-11-26 11:45:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745353121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:10,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057103874] [2023-11-26 11:45:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:10,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:10,324 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) [2023-11-26 11:45:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:10,469 INFO L93 Difference]: Finished difference Result 838 states and 1167 transitions. [2023-11-26 11:45:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:10,470 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 [2023-11-26 11:45:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:10,474 INFO L225 Difference]: With dead ends: 838 [2023-11-26 11:45:10,475 INFO L226 Difference]: Without dead ends: 522 [2023-11-26 11:45:10,476 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 [2023-11-26 11:45:10,478 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 [2023-11-26 11:45:10,479 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] [2023-11-26 11:45:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-26 11:45:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 488. [2023-11-26 11:45:10,522 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) [2023-11-26 11:45:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 664 transitions. [2023-11-26 11:45:10,526 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 664 transitions. Word has length 53 [2023-11-26 11:45:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:10,527 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 664 transitions. [2023-11-26 11:45:10,528 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) [2023-11-26 11:45:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 664 transitions. [2023-11-26 11:45:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:45:10,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:10,532 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] [2023-11-26 11:45:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:45:10,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:10,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash -6908331, now seen corresponding path program 1 times [2023-11-26 11:45:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571125109] [2023-11-26 11:45:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:45:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:45:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571125109] [2023-11-26 11:45:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571125109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:10,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:10,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:10,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231355483] [2023-11-26 11:45:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:10,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:10,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:10,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:10,666 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) [2023-11-26 11:45:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:10,811 INFO L93 Difference]: Finished difference Result 1067 states and 1443 transitions. [2023-11-26 11:45:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:10,812 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 [2023-11-26 11:45:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:10,817 INFO L225 Difference]: With dead ends: 1067 [2023-11-26 11:45:10,817 INFO L226 Difference]: Without dead ends: 665 [2023-11-26 11:45:10,819 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 [2023-11-26 11:45:10,820 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 [2023-11-26 11:45:10,821 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] [2023-11-26 11:45:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-26 11:45:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 616. [2023-11-26 11:45:10,868 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) [2023-11-26 11:45:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 821 transitions. [2023-11-26 11:45:10,873 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 821 transitions. Word has length 58 [2023-11-26 11:45:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:10,874 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 821 transitions. [2023-11-26 11:45:10,874 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) [2023-11-26 11:45:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 821 transitions. [2023-11-26 11:45:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:45:10,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:10,878 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] [2023-11-26 11:45:10,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:45:10,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:10,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1580994309, now seen corresponding path program 1 times [2023-11-26 11:45:10,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086198526] [2023-11-26 11:45:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:45:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:45:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086198526] [2023-11-26 11:45:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086198526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54559183] [2023-11-26 11:45:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:11,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:11,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:11,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:11,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:11,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:45:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54559183] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:11,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-11-26 11:45:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851201920] [2023-11-26 11:45:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:11,338 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) [2023-11-26 11:45:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:11,439 INFO L93 Difference]: Finished difference Result 666 states and 883 transitions. [2023-11-26 11:45:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:11,440 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 [2023-11-26 11:45:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:11,445 INFO L225 Difference]: With dead ends: 666 [2023-11-26 11:45:11,445 INFO L226 Difference]: Without dead ends: 663 [2023-11-26 11:45:11,446 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 [2023-11-26 11:45:11,447 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 [2023-11-26 11:45:11,448 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] [2023-11-26 11:45:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-26 11:45:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 615. [2023-11-26 11:45:11,500 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) [2023-11-26 11:45:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 818 transitions. [2023-11-26 11:45:11,505 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 818 transitions. Word has length 59 [2023-11-26 11:45:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:11,506 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 818 transitions. [2023-11-26 11:45:11,506 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) [2023-11-26 11:45:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 818 transitions. [2023-11-26 11:45:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:45:11,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:11,509 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] [2023-11-26 11:45:11,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:45:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:45:11,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:11,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1765859992, now seen corresponding path program 1 times [2023-11-26 11:45:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:11,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912713689] [2023-11-26 11:45:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:45:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:45:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912713689] [2023-11-26 11:45:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912713689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707576171] [2023-11-26 11:45:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:11,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:11,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:11,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:11,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:45:11,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:12,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:45:12,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707576171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:12,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-11-26 11:45:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719655775] [2023-11-26 11:45:12,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:12,370 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) [2023-11-26 11:45:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:13,079 INFO L93 Difference]: Finished difference Result 1960 states and 2646 transitions. [2023-11-26 11:45:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-26 11:45:13,080 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 [2023-11-26 11:45:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:13,092 INFO L225 Difference]: With dead ends: 1960 [2023-11-26 11:45:13,093 INFO L226 Difference]: Without dead ends: 1478 [2023-11-26 11:45:13,095 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 [2023-11-26 11:45:13,098 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 [2023-11-26 11:45:13,098 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] [2023-11-26 11:45:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-26 11:45:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 951. [2023-11-26 11:45:13,233 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) [2023-11-26 11:45:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1253 transitions. [2023-11-26 11:45:13,240 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1253 transitions. Word has length 60 [2023-11-26 11:45:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:13,241 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1253 transitions. [2023-11-26 11:45:13,241 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) [2023-11-26 11:45:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1253 transitions. [2023-11-26 11:45:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:45:13,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,249 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] [2023-11-26 11:45:13,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:45:13,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1463774967, now seen corresponding path program 1 times [2023-11-26 11:45:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296774521] [2023-11-26 11:45:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:45:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:45:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-26 11:45:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296774521] [2023-11-26 11:45:13,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296774521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987070531] [2023-11-26 11:45:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:13,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:13,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:13,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:45:13,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:13,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987070531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:13,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:45:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418934639] [2023-11-26 11:45:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:13,755 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) [2023-11-26 11:45:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:13,853 INFO L93 Difference]: Finished difference Result 1583 states and 2100 transitions. [2023-11-26 11:45:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:13,854 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 [2023-11-26 11:45:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:13,860 INFO L225 Difference]: With dead ends: 1583 [2023-11-26 11:45:13,860 INFO L226 Difference]: Without dead ends: 843 [2023-11-26 11:45:13,862 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 [2023-11-26 11:45:13,863 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 [2023-11-26 11:45:13,863 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] [2023-11-26 11:45:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-11-26 11:45:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 828. [2023-11-26 11:45:13,940 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) [2023-11-26 11:45:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1087 transitions. [2023-11-26 11:45:13,946 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1087 transitions. Word has length 77 [2023-11-26 11:45:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:13,946 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1087 transitions. [2023-11-26 11:45:13,946 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) [2023-11-26 11:45:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1087 transitions. [2023-11-26 11:45:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 11:45:13,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,959 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] [2023-11-26 11:45:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:14,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:45:14,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:14,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 4825838, now seen corresponding path program 1 times [2023-11-26 11:45:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:14,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297226602] [2023-11-26 11:45:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:45:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:45:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:45:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:45:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 11:45:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297226602] [2023-11-26 11:45:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297226602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161868393] [2023-11-26 11:45:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:14,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:14,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:14,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:45:14,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:14,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161868393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:14,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:45:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270010813] [2023-11-26 11:45:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:14,491 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) [2023-11-26 11:45:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:14,569 INFO L93 Difference]: Finished difference Result 1162 states and 1510 transitions. [2023-11-26 11:45:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:14,569 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 [2023-11-26 11:45:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:14,570 INFO L225 Difference]: With dead ends: 1162 [2023-11-26 11:45:14,570 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:45:14,572 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 [2023-11-26 11:45:14,573 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 [2023-11-26 11:45:14,573 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] [2023-11-26 11:45:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:45:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:45:14,575 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) [2023-11-26 11:45:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:45:14,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2023-11-26 11:45:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:14,575 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:14,576 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) [2023-11-26 11:45:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:45:14,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:45:14,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:45:14,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:14,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:14,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 11:45:16,559 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-11-26 11:45:16,559 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-11-26 11:45:16,559 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-11-26 11:45:16,563 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)))))) [2023-11-26 11:45:16,563 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-11-26 11:45:16,563 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-11-26 11:45:16,563 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 96) no Hoare annotation was computed. [2023-11-26 11:45:16,563 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-11-26 11:45:16,563 INFO L899 garLoopResultBuilder]: For program point L92-2(lines 76 100) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 88) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L84-2(lines 84 88) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 234) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L236(lines 223 238) no Hoare annotation was computed. [2023-11-26 11:45:16,564 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-11-26 11:45:16,564 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2023-11-26 11:45:16,565 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-11-26 11:45:16,565 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))) [2023-11-26 11:45:16,565 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-26 11:45:16,565 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-11-26 11:45:16,565 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))) [2023-11-26 11:45:16,565 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L309(lines 298 311) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-11-26 11:45:16,566 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 202 219) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 307) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-26 11:45:16,567 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)) [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-11-26 11:45:16,567 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-11-26 11:45:16,570 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))) [2023-11-26 11:45:16,570 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 210) no Hoare annotation was computed. [2023-11-26 11:45:16,570 INFO L899 garLoopResultBuilder]: For program point L206-2(lines 205 218) no Hoare annotation was computed. [2023-11-26 11:45:16,570 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-11-26 11:45:16,570 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 11:45:16,571 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))) [2023-11-26 11:45:16,571 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-11-26 11:45:16,571 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-11-26 11:45:16,571 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-11-26 11:45:16,572 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))) [2023-11-26 11:45:16,572 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-11-26 11:45:16,572 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))) [2023-11-26 11:45:16,572 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-11-26 11:45:16,573 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)))) [2023-11-26 11:45:16,573 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-11-26 11:45:16,573 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-11-26 11:45:16,573 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-11-26 11:45:16,573 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-26 11:45:16,577 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:16,585 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:45:16,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:45:16 BoogieIcfgContainer [2023-11-26 11:45:16,633 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:45:16,634 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:45:16,640 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:45:16,640 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:45:16,641 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:08" (3/4) ... [2023-11-26 11:45:16,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:45:16,647 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-11-26 11:45:16,647 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-11-26 11:45:16,648 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-11-26 11:45:16,659 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-26 11:45:16,660 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 11:45:16,661 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:45:16,661 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:45:16,808 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:45:16,809 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:45:16,809 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:45:16,810 INFO L158 Benchmark]: Toolchain (without parser) took 9349.99ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 94.2MB in the beginning and 85.8MB in the end (delta: 8.4MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,810 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:16,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.17ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 81.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,812 INFO L158 Benchmark]: Boogie Preprocessor took 47.22ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 77.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,812 INFO L158 Benchmark]: RCFGBuilder took 510.11ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 59.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,813 INFO L158 Benchmark]: TraceAbstraction took 8205.39ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 58.5MB in the beginning and 92.1MB in the end (delta: -33.5MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,814 INFO L158 Benchmark]: Witness Printer took 175.62ms. Allocated memory is still 218.1MB. Free memory was 92.1MB in the beginning and 85.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:45:16,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.17ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 81.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.22ms. Allocated memory is still 142.6MB. Free memory was 79.5MB in the beginning and 77.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.11ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 59.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8205.39ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 58.5MB in the beginning and 92.1MB in the end (delta: -33.5MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Witness Printer took 175.62ms. Allocated memory is still 218.1MB. Free memory was 92.1MB in the beginning and 85.8MB in the end (delta: 6.3MB). 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: 8.1s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1066 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1054 mSDsluCounter, 2556 SdHoareTripleChecker+Invalid, 0.8s 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s 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: 0.5s 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, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s 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! [2023-11-26 11:45:16,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd6c207-9f8d-409c-8be5-883ffa6d17c7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE