./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:39:23,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:39:23,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:39:23,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:39:23,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:39:23,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:39:23,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:39:23,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:39:23,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:39:23,529 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:39:23,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:39:23,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:39:23,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:39:23,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:39:23,532 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:39:23,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:39:23,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:39:23,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:39:23,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:39:23,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:39:23,535 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:39:23,536 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:39:23,537 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:39:23,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:39:23,537 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:39:23,538 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:39:23,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:39:23,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:39:23,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:39:23,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:39:23,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:39:23,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:39:23,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:23,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:39:23,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:39:23,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:39:23,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:39:23,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:39:23,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:39:23,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:39:23,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:39:23,543 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_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2023-11-29 01:39:23,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:39:23,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:39:23,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:39:23,796 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:39:23,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:39:23,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2023-11-29 01:39:26,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:39:26,727 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:39:26,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2023-11-29 01:39:26,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/68a0faf50/d89949ebd0ae49e1939922945b5ea806/FLAG0ba8c4e48 [2023-11-29 01:39:26,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/68a0faf50/d89949ebd0ae49e1939922945b5ea806 [2023-11-29 01:39:26,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:39:26,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:39:26,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:26,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:39:26,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:39:26,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:26" (1/1) ... [2023-11-29 01:39:26,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631e7d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:26, skipping insertion in model container [2023-11-29 01:39:26,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:26" (1/1) ... [2023-11-29 01:39:26,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:39:27,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:27,128 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:39:27,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:27,199 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:39:27,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27 WrapperNode [2023-11-29 01:39:27,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:27,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:27,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:39:27,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:39:27,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,244 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2023-11-29 01:39:27,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:27,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:39:27,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:39:27,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:39:27,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,276 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [6, 9, 9]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 6, 9]. The 0 writes are split as follows [0, 0, 0]. [2023-11-29 01:39:27,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:39:27,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:39:27,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:39:27,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:39:27,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (1/1) ... [2023-11-29 01:39:27,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:27,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:27,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:39:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:39:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:39:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:39:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:39:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-29 01:39:27,359 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:39:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:39:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:39:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:39:27,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:39:27,472 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:39:27,474 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:39:27,668 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:39:27,699 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:39:27,700 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:39:27,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:27 BoogieIcfgContainer [2023-11-29 01:39:27,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:39:27,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:39:27,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:39:27,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:39:27,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:39:26" (1/3) ... [2023-11-29 01:39:27,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edcacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:27, skipping insertion in model container [2023-11-29 01:39:27,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:27" (2/3) ... [2023-11-29 01:39:27,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edcacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:27, skipping insertion in model container [2023-11-29 01:39:27,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:27" (3/3) ... [2023-11-29 01:39:27,711 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2023-11-29 01:39:27,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:39:27,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 01:39:27,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:39:27,783 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@43aec17d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:39:27,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 01:39:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:39:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:39:27,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:27,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:39:27,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:27,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 131378568, now seen corresponding path program 1 times [2023-11-29 01:39:27,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:27,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202052673] [2023-11-29 01:39:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:28,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202052673] [2023-11-29 01:39:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202052673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:28,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:28,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:39:28,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361036086] [2023-11-29 01:39:28,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:28,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:28,155 INFO L87 Difference]: Start difference. First operand has 59 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:28,301 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2023-11-29 01:39:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:39:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:28,314 INFO L225 Difference]: With dead ends: 117 [2023-11-29 01:39:28,314 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 01:39:28,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:28,320 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 143 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:28,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 100 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 01:39:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2023-11-29 01:39:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.65) internal successors, (99), 77 states have internal predecessors, (99), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 01:39:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2023-11-29 01:39:28,373 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 5 [2023-11-29 01:39:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:28,374 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2023-11-29 01:39:28,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2023-11-29 01:39:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:39:28,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:28,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:39:28,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:39:28,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:28,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 131378569, now seen corresponding path program 1 times [2023-11-29 01:39:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746102048] [2023-11-29 01:39:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:28,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746102048] [2023-11-29 01:39:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746102048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:28,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597826297] [2023-11-29 01:39:28,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:28,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:28,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:28,574 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:28,737 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2023-11-29 01:39:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:39:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:28,740 INFO L225 Difference]: With dead ends: 211 [2023-11-29 01:39:28,741 INFO L226 Difference]: Without dead ends: 211 [2023-11-29 01:39:28,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:28,743 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 136 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 197 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-29 01:39:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 160. [2023-11-29 01:39:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.6666666666666667) internal successors, (210), 143 states have internal predecessors, (210), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-29 01:39:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 246 transitions. [2023-11-29 01:39:28,768 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 246 transitions. Word has length 5 [2023-11-29 01:39:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 246 transitions. [2023-11-29 01:39:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 246 transitions. [2023-11-29 01:39:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:39:28,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:28,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:39:28,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:39:28,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:28,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -222231707, now seen corresponding path program 1 times [2023-11-29 01:39:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930911351] [2023-11-29 01:39:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:28,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930911351] [2023-11-29 01:39:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930911351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:28,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:28,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117511337] [2023-11-29 01:39:28,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:28,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:28,973 INFO L87 Difference]: Start difference. First operand 160 states and 246 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:29,140 INFO L93 Difference]: Finished difference Result 237 states and 340 transitions. [2023-11-29 01:39:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 01:39:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:29,145 INFO L225 Difference]: With dead ends: 237 [2023-11-29 01:39:29,145 INFO L226 Difference]: Without dead ends: 237 [2023-11-29 01:39:29,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:29,147 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 130 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 161 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-29 01:39:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2023-11-29 01:39:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.6511627906976745) internal successors, (213), 146 states have internal predecessors, (213), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-29 01:39:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 249 transitions. [2023-11-29 01:39:29,167 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 249 transitions. Word has length 6 [2023-11-29 01:39:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:29,168 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 249 transitions. [2023-11-29 01:39:29,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 249 transitions. [2023-11-29 01:39:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:39:29,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:29,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:29,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:39:29,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:29,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1700751720, now seen corresponding path program 1 times [2023-11-29 01:39:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971097112] [2023-11-29 01:39:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971097112] [2023-11-29 01:39:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971097112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:29,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:29,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699648720] [2023-11-29 01:39:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:29,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:29,406 INFO L87 Difference]: Start difference. First operand 163 states and 249 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:29,558 INFO L93 Difference]: Finished difference Result 213 states and 284 transitions. [2023-11-29 01:39:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:29,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:39:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:29,561 INFO L225 Difference]: With dead ends: 213 [2023-11-29 01:39:29,561 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 01:39:29,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:29,563 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:29,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 192 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 01:39:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2023-11-29 01:39:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.6356589147286822) internal successors, (211), 146 states have internal predecessors, (211), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-29 01:39:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 247 transitions. [2023-11-29 01:39:29,580 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 247 transitions. Word has length 7 [2023-11-29 01:39:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:29,581 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 247 transitions. [2023-11-29 01:39:29,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 247 transitions. [2023-11-29 01:39:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:39:29,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:29,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:29,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:39:29,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:29,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1183695815, now seen corresponding path program 1 times [2023-11-29 01:39:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413186741] [2023-11-29 01:39:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:29,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413186741] [2023-11-29 01:39:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413186741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:29,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:29,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:29,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192582324] [2023-11-29 01:39:29,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:29,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:29,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:29,658 INFO L87 Difference]: Start difference. First operand 163 states and 247 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:29,758 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2023-11-29 01:39:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 01:39:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:29,761 INFO L225 Difference]: With dead ends: 245 [2023-11-29 01:39:29,761 INFO L226 Difference]: Without dead ends: 245 [2023-11-29 01:39:29,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:29,763 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 131 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:29,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 174 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-29 01:39:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 196. [2023-11-29 01:39:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 160 states have (on average 1.60625) internal successors, (257), 178 states have internal predecessors, (257), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-29 01:39:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2023-11-29 01:39:29,779 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 8 [2023-11-29 01:39:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:29,779 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2023-11-29 01:39:29,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2023-11-29 01:39:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:39:29,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:29,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:39:29,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:29,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1960135350, now seen corresponding path program 1 times [2023-11-29 01:39:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233444931] [2023-11-29 01:39:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233444931] [2023-11-29 01:39:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233444931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249349387] [2023-11-29 01:39:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:29,882 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:29,979 INFO L93 Difference]: Finished difference Result 244 states and 316 transitions. [2023-11-29 01:39:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 01:39:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:29,982 INFO L225 Difference]: With dead ends: 244 [2023-11-29 01:39:29,983 INFO L226 Difference]: Without dead ends: 244 [2023-11-29 01:39:29,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:29,984 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 183 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 193 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-29 01:39:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2023-11-29 01:39:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 173 states have (on average 1.606936416184971) internal successors, (278), 192 states have internal predecessors, (278), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-29 01:39:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 314 transitions. [2023-11-29 01:39:29,999 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 314 transitions. Word has length 9 [2023-11-29 01:39:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:29,999 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 314 transitions. [2023-11-29 01:39:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 314 transitions. [2023-11-29 01:39:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:39:30,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:30,001 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:30,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:39:30,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:30,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -519071088, now seen corresponding path program 1 times [2023-11-29 01:39:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506035375] [2023-11-29 01:39:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506035375] [2023-11-29 01:39:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506035375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321113929] [2023-11-29 01:39:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:30,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:30,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:30,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:39:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:30,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:39:30,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:30,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321113929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:30,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-11-29 01:39:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025751473] [2023-11-29 01:39:30,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:30,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:39:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:39:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:39:30,629 INFO L87 Difference]: Start difference. First operand 210 states and 314 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:30,896 INFO L93 Difference]: Finished difference Result 278 states and 373 transitions. [2023-11-29 01:39:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:39:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 01:39:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:30,899 INFO L225 Difference]: With dead ends: 278 [2023-11-29 01:39:30,899 INFO L226 Difference]: Without dead ends: 278 [2023-11-29 01:39:30,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:39:30,900 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 384 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:30,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 431 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-29 01:39:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 215. [2023-11-29 01:39:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 177 states have (on average 1.5423728813559323) internal successors, (273), 197 states have internal predecessors, (273), 10 states have call successors, (10), 7 states have call predecessors, (10), 10 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-29 01:39:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 310 transitions. [2023-11-29 01:39:30,913 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 310 transitions. Word has length 13 [2023-11-29 01:39:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:30,913 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 310 transitions. [2023-11-29 01:39:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 310 transitions. [2023-11-29 01:39:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:39:30,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:30,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:30,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:31,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:31,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:31,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:31,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1088665406, now seen corresponding path program 1 times [2023-11-29 01:39:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576601663] [2023-11-29 01:39:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576601663] [2023-11-29 01:39:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576601663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499523443] [2023-11-29 01:39:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:31,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:31,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:31,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:31,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:39:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:31,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:39:31,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:31,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499523443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:31,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-11-29 01:39:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406472055] [2023-11-29 01:39:31,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:39:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:39:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:39:31,612 INFO L87 Difference]: Start difference. First operand 215 states and 310 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:31,936 INFO L93 Difference]: Finished difference Result 307 states and 427 transitions. [2023-11-29 01:39:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:39:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 01:39:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:31,939 INFO L225 Difference]: With dead ends: 307 [2023-11-29 01:39:31,940 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 01:39:31,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:39:31,941 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 107 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 433 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 01:39:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 225. [2023-11-29 01:39:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 186 states have (on average 1.532258064516129) internal successors, (285), 207 states have internal predecessors, (285), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 01:39:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 324 transitions. [2023-11-29 01:39:31,954 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 324 transitions. Word has length 14 [2023-11-29 01:39:31,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:31,955 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 324 transitions. [2023-11-29 01:39:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 324 transitions. [2023-11-29 01:39:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:39:31,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:31,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:31,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:32,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:32,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash -611110737, now seen corresponding path program 1 times [2023-11-29 01:39:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620938220] [2023-11-29 01:39:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620938220] [2023-11-29 01:39:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620938220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:32,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905029526] [2023-11-29 01:39:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:32,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:32,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:32,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:32,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:39:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:32,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:39:32,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:32,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905029526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:32,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:32,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-11-29 01:39:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292761365] [2023-11-29 01:39:32,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:32,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:39:32,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:39:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:39:32,860 INFO L87 Difference]: Start difference. First operand 225 states and 324 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:33,651 INFO L93 Difference]: Finished difference Result 482 states and 629 transitions. [2023-11-29 01:39:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:39:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:39:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:33,656 INFO L225 Difference]: With dead ends: 482 [2023-11-29 01:39:33,656 INFO L226 Difference]: Without dead ends: 482 [2023-11-29 01:39:33,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:39:33,657 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 503 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:33,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 886 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:39:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-29 01:39:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 296. [2023-11-29 01:39:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 253 states have (on average 1.5533596837944663) internal successors, (393), 276 states have internal predecessors, (393), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-29 01:39:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 435 transitions. [2023-11-29 01:39:33,670 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 435 transitions. Word has length 15 [2023-11-29 01:39:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:33,670 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 435 transitions. [2023-11-29 01:39:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 435 transitions. [2023-11-29 01:39:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:39:33,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:33,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:33,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:39:33,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:39:33,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:33,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash -905176023, now seen corresponding path program 1 times [2023-11-29 01:39:33,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036226449] [2023-11-29 01:39:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036226449] [2023-11-29 01:39:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036226449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:33,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:33,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:39:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951925184] [2023-11-29 01:39:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:33,919 INFO L87 Difference]: Start difference. First operand 296 states and 435 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:33,946 INFO L93 Difference]: Finished difference Result 436 states and 645 transitions. [2023-11-29 01:39:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:39:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:33,949 INFO L225 Difference]: With dead ends: 436 [2023-11-29 01:39:33,950 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 01:39:33,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:33,951 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 48 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:33,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 99 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 01:39:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 419. [2023-11-29 01:39:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 365 states have (on average 1.558904109589041) internal successors, (569), 392 states have internal predecessors, (569), 15 states have call successors, (15), 11 states have call predecessors, (15), 21 states have return successors, (53), 15 states have call predecessors, (53), 15 states have call successors, (53) [2023-11-29 01:39:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 637 transitions. [2023-11-29 01:39:33,971 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 637 transitions. Word has length 16 [2023-11-29 01:39:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:33,972 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 637 transitions. [2023-11-29 01:39:33,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 637 transitions. [2023-11-29 01:39:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:39:33,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:33,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:33,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:39:33,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:33,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash -905175767, now seen corresponding path program 1 times [2023-11-29 01:39:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958866912] [2023-11-29 01:39:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958866912] [2023-11-29 01:39:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958866912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650753854] [2023-11-29 01:39:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:34,008 INFO L87 Difference]: Start difference. First operand 419 states and 637 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,021 INFO L93 Difference]: Finished difference Result 381 states and 571 transitions. [2023-11-29 01:39:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:34,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:39:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,024 INFO L225 Difference]: With dead ends: 381 [2023-11-29 01:39:34,025 INFO L226 Difference]: Without dead ends: 381 [2023-11-29 01:39:34,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:34,026 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 88 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-29 01:39:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2023-11-29 01:39:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 333 states have (on average 1.5105105105105106) internal successors, (503), 354 states have internal predecessors, (503), 15 states have call successors, (15), 11 states have call predecessors, (15), 21 states have return successors, (53), 15 states have call predecessors, (53), 15 states have call successors, (53) [2023-11-29 01:39:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 571 transitions. [2023-11-29 01:39:34,043 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 571 transitions. Word has length 16 [2023-11-29 01:39:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,043 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 571 transitions. [2023-11-29 01:39:34,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 571 transitions. [2023-11-29 01:39:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:39:34,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:39:34,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:34,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2004314431, now seen corresponding path program 1 times [2023-11-29 01:39:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103243033] [2023-11-29 01:39:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103243033] [2023-11-29 01:39:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103243033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:39:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010644679] [2023-11-29 01:39:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:34,102 INFO L87 Difference]: Start difference. First operand 381 states and 571 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,136 INFO L93 Difference]: Finished difference Result 447 states and 651 transitions. [2023-11-29 01:39:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 01:39:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,141 INFO L225 Difference]: With dead ends: 447 [2023-11-29 01:39:34,141 INFO L226 Difference]: Without dead ends: 447 [2023-11-29 01:39:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:34,142 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 31 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-29 01:39:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 427. [2023-11-29 01:39:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 376 states have (on average 1.5079787234042554) internal successors, (567), 398 states have internal predecessors, (567), 16 states have call successors, (16), 12 states have call predecessors, (16), 23 states have return successors, (55), 16 states have call predecessors, (55), 16 states have call successors, (55) [2023-11-29 01:39:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 638 transitions. [2023-11-29 01:39:34,162 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 638 transitions. Word has length 17 [2023-11-29 01:39:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,162 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 638 transitions. [2023-11-29 01:39:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 638 transitions. [2023-11-29 01:39:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:39:34,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:39:34,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:34,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1348043702, now seen corresponding path program 1 times [2023-11-29 01:39:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931297354] [2023-11-29 01:39:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931297354] [2023-11-29 01:39:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931297354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:39:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227237213] [2023-11-29 01:39:34,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,223 INFO L87 Difference]: Start difference. First operand 427 states and 638 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,287 INFO L93 Difference]: Finished difference Result 297 states and 424 transitions. [2023-11-29 01:39:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-29 01:39:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,290 INFO L225 Difference]: With dead ends: 297 [2023-11-29 01:39:34,290 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 01:39:34,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,291 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 54 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 01:39:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 294. [2023-11-29 01:39:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 256 states have (on average 1.4765625) internal successors, (378), 274 states have internal predecessors, (378), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:39:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2023-11-29 01:39:34,303 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 23 [2023-11-29 01:39:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,304 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2023-11-29 01:39:34,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2023-11-29 01:39:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:39:34,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:39:34,324 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:34,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -780593392, now seen corresponding path program 1 times [2023-11-29 01:39:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909269310] [2023-11-29 01:39:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909269310] [2023-11-29 01:39:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909269310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:39:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195330515] [2023-11-29 01:39:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:39:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:39:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:34,434 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,607 INFO L93 Difference]: Finished difference Result 313 states and 435 transitions. [2023-11-29 01:39:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:39:34,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-29 01:39:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,610 INFO L225 Difference]: With dead ends: 313 [2023-11-29 01:39:34,610 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 01:39:34,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:39:34,611 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 102 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 127 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 01:39:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 294. [2023-11-29 01:39:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 256 states have (on average 1.46484375) internal successors, (375), 274 states have internal predecessors, (375), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:39:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 418 transitions. [2023-11-29 01:39:34,619 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 418 transitions. Word has length 25 [2023-11-29 01:39:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,620 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 418 transitions. [2023-11-29 01:39:34,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 418 transitions. [2023-11-29 01:39:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:39:34,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:39:34,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:34,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1173620402, now seen corresponding path program 1 times [2023-11-29 01:39:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574832787] [2023-11-29 01:39:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574832787] [2023-11-29 01:39:34,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574832787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:34,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650492124] [2023-11-29 01:39:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:34,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:34,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:39:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:39:34,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:35,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:35,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:35,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650492124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:35,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 13 [2023-11-29 01:39:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145676607] [2023-11-29 01:39:35,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:39:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:39:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:39:35,531 INFO L87 Difference]: Start difference. First operand 294 states and 418 transitions. Second operand has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:36,109 INFO L93 Difference]: Finished difference Result 389 states and 523 transitions. [2023-11-29 01:39:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:39:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-11-29 01:39:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:36,113 INFO L225 Difference]: With dead ends: 389 [2023-11-29 01:39:36,113 INFO L226 Difference]: Without dead ends: 389 [2023-11-29 01:39:36,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:39:36,114 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 493 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:36,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 85 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-29 01:39:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 298. [2023-11-29 01:39:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 260 states have (on average 1.4192307692307693) internal successors, (369), 278 states have internal predecessors, (369), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:39:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 412 transitions. [2023-11-29 01:39:36,125 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 412 transitions. Word has length 25 [2023-11-29 01:39:36,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:36,125 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 412 transitions. [2023-11-29 01:39:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 412 transitions. [2023-11-29 01:39:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:39:36,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:36,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:36,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:39:36,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:36,329 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:36,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -177446873, now seen corresponding path program 1 times [2023-11-29 01:39:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:36,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986909935] [2023-11-29 01:39:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:36,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986909935] [2023-11-29 01:39:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986909935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:36,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402522640] [2023-11-29 01:39:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:36,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:36,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:36,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:36,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:39:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:36,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:39:36,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:36,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402522640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-29 01:39:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911133530] [2023-11-29 01:39:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:39:36,719 INFO L87 Difference]: Start difference. First operand 298 states and 412 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:36,785 INFO L93 Difference]: Finished difference Result 347 states and 465 transitions. [2023-11-29 01:39:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-29 01:39:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:36,788 INFO L225 Difference]: With dead ends: 347 [2023-11-29 01:39:36,788 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 01:39:36,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:39:36,789 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:36,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 102 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 01:39:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 304. [2023-11-29 01:39:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 266 states have (on average 1.4097744360902256) internal successors, (375), 284 states have internal predecessors, (375), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:39:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 418 transitions. [2023-11-29 01:39:36,802 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 418 transitions. Word has length 26 [2023-11-29 01:39:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:36,802 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 418 transitions. [2023-11-29 01:39:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 418 transitions. [2023-11-29 01:39:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:39:36,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:36,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:36,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:39:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:37,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:37,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1727191021, now seen corresponding path program 1 times [2023-11-29 01:39:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:37,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541915856] [2023-11-29 01:39:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541915856] [2023-11-29 01:39:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541915856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427974914] [2023-11-29 01:39:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:37,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:37,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:37,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:37,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:39:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:37,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:39:37,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:38,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:38,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:38,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427974914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:38,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2023-11-29 01:39:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395454079] [2023-11-29 01:39:38,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:38,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:39:38,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:39:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:39:38,345 INFO L87 Difference]: Start difference. First operand 304 states and 418 transitions. Second operand has 19 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:38,950 INFO L93 Difference]: Finished difference Result 348 states and 461 transitions. [2023-11-29 01:39:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:39:38,951 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-29 01:39:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:38,953 INFO L225 Difference]: With dead ends: 348 [2023-11-29 01:39:38,953 INFO L226 Difference]: Without dead ends: 348 [2023-11-29 01:39:38,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:39:38,955 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 341 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:38,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 141 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-29 01:39:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 305. [2023-11-29 01:39:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 267 states have (on average 1.3895131086142323) internal successors, (371), 285 states have internal predecessors, (371), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:39:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 414 transitions. [2023-11-29 01:39:38,965 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 414 transitions. Word has length 27 [2023-11-29 01:39:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:38,965 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 414 transitions. [2023-11-29 01:39:38,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 414 transitions. [2023-11-29 01:39:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 01:39:38,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:38,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:38,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:39:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:39:39,167 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:39,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2003314146, now seen corresponding path program 1 times [2023-11-29 01:39:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618108208] [2023-11-29 01:39:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:39,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618108208] [2023-11-29 01:39:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618108208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459547996] [2023-11-29 01:39:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:39,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:39,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:39:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:39,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:39:39,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:39,597 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:39:39,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:39:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:39,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459547996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:39,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:39,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2023-11-29 01:39:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122926196] [2023-11-29 01:39:39,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:39:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:39:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:39:39,694 INFO L87 Difference]: Start difference. First operand 305 states and 414 transitions. Second operand has 12 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:39:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:40,172 INFO L93 Difference]: Finished difference Result 419 states and 527 transitions. [2023-11-29 01:39:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:39:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-29 01:39:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:40,175 INFO L225 Difference]: With dead ends: 419 [2023-11-29 01:39:40,175 INFO L226 Difference]: Without dead ends: 419 [2023-11-29 01:39:40,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:39:40,176 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 262 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:40,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 168 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-29 01:39:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 378. [2023-11-29 01:39:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 337 states have (on average 1.3560830860534125) internal successors, (457), 356 states have internal predecessors, (457), 11 states have call successors, (11), 10 states have call predecessors, (11), 18 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-29 01:39:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 499 transitions. [2023-11-29 01:39:40,190 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 499 transitions. Word has length 28 [2023-11-29 01:39:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:40,190 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 499 transitions. [2023-11-29 01:39:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:39:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 499 transitions. [2023-11-29 01:39:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 01:39:40,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:40,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:40,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:39:40,392 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:40,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1973196431, now seen corresponding path program 1 times [2023-11-29 01:39:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134223729] [2023-11-29 01:39:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:40,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:40,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134223729] [2023-11-29 01:39:40,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134223729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:40,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259701950] [2023-11-29 01:39:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:40,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:40,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:40,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:39:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:40,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:39:40,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:40,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:40,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259701950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:41,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2023-11-29 01:39:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444117459] [2023-11-29 01:39:41,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:39:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:39:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:39:41,130 INFO L87 Difference]: Start difference. First operand 378 states and 499 transitions. Second operand has 16 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:41,731 INFO L93 Difference]: Finished difference Result 507 states and 621 transitions. [2023-11-29 01:39:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:39:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-29 01:39:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:41,735 INFO L225 Difference]: With dead ends: 507 [2023-11-29 01:39:41,735 INFO L226 Difference]: Without dead ends: 507 [2023-11-29 01:39:41,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:39:41,736 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 500 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:41,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 180 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-11-29 01:39:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 463. [2023-11-29 01:39:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 419 states have (on average 1.334128878281623) internal successors, (559), 440 states have internal predecessors, (559), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 01:39:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 597 transitions. [2023-11-29 01:39:41,752 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 597 transitions. Word has length 29 [2023-11-29 01:39:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:41,752 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 597 transitions. [2023-11-29 01:39:41,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 597 transitions. [2023-11-29 01:39:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:39:41,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:41,754 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:41,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:39:41,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:41,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:41,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1854582443, now seen corresponding path program 1 times [2023-11-29 01:39:41,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:41,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343331291] [2023-11-29 01:39:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:42,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:42,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343331291] [2023-11-29 01:39:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343331291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:42,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051356235] [2023-11-29 01:39:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:42,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:42,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:42,287 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:42,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:39:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:42,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:39:42,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:42,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:42,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:42,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051356235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:42,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:42,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2023-11-29 01:39:42,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085997788] [2023-11-29 01:39:42,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:39:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:39:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:39:42,921 INFO L87 Difference]: Start difference. First operand 463 states and 597 transitions. Second operand has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:43,436 INFO L93 Difference]: Finished difference Result 547 states and 665 transitions. [2023-11-29 01:39:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:39:43,436 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-29 01:39:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:43,440 INFO L225 Difference]: With dead ends: 547 [2023-11-29 01:39:43,440 INFO L226 Difference]: Without dead ends: 547 [2023-11-29 01:39:43,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:39:43,441 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 481 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:43,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 125 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-29 01:39:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 460. [2023-11-29 01:39:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 419 states have (on average 1.2840095465393795) internal successors, (538), 437 states have internal predecessors, (538), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 01:39:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 576 transitions. [2023-11-29 01:39:43,456 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 576 transitions. Word has length 33 [2023-11-29 01:39:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:43,456 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 576 transitions. [2023-11-29 01:39:43,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 576 transitions. [2023-11-29 01:39:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:39:43,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:43,457 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 01:39:43,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:39:43,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:43,673 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:43,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:43,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2145365376, now seen corresponding path program 1 times [2023-11-29 01:39:43,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:43,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059667855] [2023-11-29 01:39:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:43,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059667855] [2023-11-29 01:39:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059667855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573303228] [2023-11-29 01:39:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:43,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:43,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:43,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:39:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:43,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:39:43,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:44,125 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:39:44,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 01:39:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:39:44,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:44,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 01:39:44,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 01:39:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:39:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573303228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:44,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:44,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-11-29 01:39:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795569785] [2023-11-29 01:39:44,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:44,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:39:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:39:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:39:44,395 INFO L87 Difference]: Start difference. First operand 460 states and 576 transitions. Second operand has 17 states, 12 states have (on average 6.333333333333333) internal successors, (76), 14 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:39:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:44,779 INFO L93 Difference]: Finished difference Result 499 states and 602 transitions. [2023-11-29 01:39:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:39:44,779 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 6.333333333333333) internal successors, (76), 14 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-11-29 01:39:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:44,782 INFO L225 Difference]: With dead ends: 499 [2023-11-29 01:39:44,782 INFO L226 Difference]: Without dead ends: 499 [2023-11-29 01:39:44,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:39:44,783 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 253 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:44,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 161 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-29 01:39:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 463. [2023-11-29 01:39:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 422 states have (on average 1.2819905213270142) internal successors, (541), 440 states have internal predecessors, (541), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-29 01:39:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 578 transitions. [2023-11-29 01:39:44,808 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 578 transitions. Word has length 34 [2023-11-29 01:39:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:44,808 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 578 transitions. [2023-11-29 01:39:44,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 6.333333333333333) internal successors, (76), 14 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:39:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 578 transitions. [2023-11-29 01:39:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:39:44,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:44,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:44,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:39:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:39:45,010 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:45,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2081817197, now seen corresponding path program 1 times [2023-11-29 01:39:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077104773] [2023-11-29 01:39:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077104773] [2023-11-29 01:39:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077104773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165188682] [2023-11-29 01:39:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:45,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:45,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:45,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:45,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:39:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:45,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:39:45,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:46,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:46,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:46,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165188682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:46,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:46,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2023-11-29 01:39:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134212855] [2023-11-29 01:39:46,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:46,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:39:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:39:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:39:46,220 INFO L87 Difference]: Start difference. First operand 463 states and 578 transitions. Second operand has 19 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:46,970 INFO L93 Difference]: Finished difference Result 566 states and 667 transitions. [2023-11-29 01:39:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:39:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2023-11-29 01:39:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:46,973 INFO L225 Difference]: With dead ends: 566 [2023-11-29 01:39:46,973 INFO L226 Difference]: Without dead ends: 566 [2023-11-29 01:39:46,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=338, Invalid=1222, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:39:46,975 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 604 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:46,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 196 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:39:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-29 01:39:46,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 428. [2023-11-29 01:39:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 389 states have (on average 1.275064267352185) internal successors, (496), 407 states have internal predecessors, (496), 10 states have call successors, (10), 10 states have call predecessors, (10), 20 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 01:39:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 530 transitions. [2023-11-29 01:39:46,989 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 530 transitions. Word has length 35 [2023-11-29 01:39:46,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:46,989 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 530 transitions. [2023-11-29 01:39:46,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 530 transitions. [2023-11-29 01:39:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 01:39:46,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:46,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:46,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:39:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:39:47,191 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash -828432177, now seen corresponding path program 1 times [2023-11-29 01:39:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32086728] [2023-11-29 01:39:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32086728] [2023-11-29 01:39:47,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32086728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947192851] [2023-11-29 01:39:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:47,395 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:47,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:39:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:47,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:39:47,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:47,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:47,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:47,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947192851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:47,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-29 01:39:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870208120] [2023-11-29 01:39:47,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:47,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:39:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:39:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:39:47,879 INFO L87 Difference]: Start difference. First operand 428 states and 530 transitions. Second operand has 16 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:39:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:48,412 INFO L93 Difference]: Finished difference Result 465 states and 549 transitions. [2023-11-29 01:39:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:39:48,412 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2023-11-29 01:39:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:48,414 INFO L225 Difference]: With dead ends: 465 [2023-11-29 01:39:48,415 INFO L226 Difference]: Without dead ends: 465 [2023-11-29 01:39:48,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:39:48,416 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 474 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:48,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 177 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-29 01:39:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 428. [2023-11-29 01:39:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 389 states have (on average 1.2724935732647815) internal successors, (495), 407 states have internal predecessors, (495), 10 states have call successors, (10), 10 states have call predecessors, (10), 20 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 01:39:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2023-11-29 01:39:48,428 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 37 [2023-11-29 01:39:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:48,428 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2023-11-29 01:39:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:39:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2023-11-29 01:39:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 01:39:48,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:48,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:48,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:39:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:39:48,630 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:48,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash 49098310, now seen corresponding path program 2 times [2023-11-29 01:39:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339726466] [2023-11-29 01:39:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:48,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339726466] [2023-11-29 01:39:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339726466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139956185] [2023-11-29 01:39:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:39:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:48,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:48,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:39:49,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:39:49,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:39:49,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:39:49,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:49,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:49,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139956185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:49,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:49,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2023-11-29 01:39:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560876572] [2023-11-29 01:39:49,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:49,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:39:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:39:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:39:49,555 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand has 17 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:50,409 INFO L93 Difference]: Finished difference Result 518 states and 608 transitions. [2023-11-29 01:39:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:39:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2023-11-29 01:39:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:50,411 INFO L225 Difference]: With dead ends: 518 [2023-11-29 01:39:50,412 INFO L226 Difference]: Without dead ends: 518 [2023-11-29 01:39:50,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1325, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:39:50,413 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 354 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:50,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 240 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:39:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2023-11-29 01:39:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 390. [2023-11-29 01:39:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 354 states have (on average 1.2627118644067796) internal successors, (447), 371 states have internal predecessors, (447), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-29 01:39:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 477 transitions. [2023-11-29 01:39:50,425 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 477 transitions. Word has length 43 [2023-11-29 01:39:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:50,426 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 477 transitions. [2023-11-29 01:39:50,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:39:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 477 transitions. [2023-11-29 01:39:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 01:39:50,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:50,427 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:50,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:39:50,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:39:50,627 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:50,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash 558007675, now seen corresponding path program 1 times [2023-11-29 01:39:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:50,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110003598] [2023-11-29 01:39:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110003598] [2023-11-29 01:39:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110003598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778262591] [2023-11-29 01:39:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:50,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:50,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:50,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:50,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:39:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:50,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:39:50,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:39:50,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:50,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778262591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:50,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:50,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-29 01:39:50,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668211572] [2023-11-29 01:39:50,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:50,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:39:50,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:39:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:39:50,832 INFO L87 Difference]: Start difference. First operand 390 states and 477 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:50,860 INFO L93 Difference]: Finished difference Result 444 states and 520 transitions. [2023-11-29 01:39:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2023-11-29 01:39:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:50,863 INFO L225 Difference]: With dead ends: 444 [2023-11-29 01:39:50,863 INFO L226 Difference]: Without dead ends: 444 [2023-11-29 01:39:50,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:39:50,864 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:50,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 163 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-29 01:39:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 378. [2023-11-29 01:39:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 342 states have (on average 1.2309941520467835) internal successors, (421), 359 states have internal predecessors, (421), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-29 01:39:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 451 transitions. [2023-11-29 01:39:50,875 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 451 transitions. Word has length 43 [2023-11-29 01:39:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:50,875 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 451 transitions. [2023-11-29 01:39:50,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 451 transitions. [2023-11-29 01:39:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 01:39:50,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:50,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:50,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:39:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:39:51,082 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:51,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 977756381, now seen corresponding path program 1 times [2023-11-29 01:39:51,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:51,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462052308] [2023-11-29 01:39:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462052308] [2023-11-29 01:39:51,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462052308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:51,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967199783] [2023-11-29 01:39:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:51,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:51,169 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:39:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:39:51,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:51,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967199783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-29 01:39:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732452852] [2023-11-29 01:39:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:51,303 INFO L87 Difference]: Start difference. First operand 378 states and 451 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:51,321 INFO L93 Difference]: Finished difference Result 377 states and 448 transitions. [2023-11-29 01:39:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-11-29 01:39:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:51,323 INFO L225 Difference]: With dead ends: 377 [2023-11-29 01:39:51,324 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 01:39:51,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:51,324 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:51,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 74 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 01:39:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-29 01:39:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 342 states have (on average 1.2222222222222223) internal successors, (418), 358 states have internal predecessors, (418), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-29 01:39:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 448 transitions. [2023-11-29 01:39:51,332 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 448 transitions. Word has length 44 [2023-11-29 01:39:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:51,332 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 448 transitions. [2023-11-29 01:39:51,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 448 transitions. [2023-11-29 01:39:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:39:51,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:51,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:51,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:39:51,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:39:51,534 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:51,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 245676811, now seen corresponding path program 1 times [2023-11-29 01:39:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753896530] [2023-11-29 01:39:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753896530] [2023-11-29 01:39:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753896530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668256016] [2023-11-29 01:39:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:51,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:51,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:51,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:39:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:51,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:39:51,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:51,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668256016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-29 01:39:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615277784] [2023-11-29 01:39:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:51,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:51,759 INFO L87 Difference]: Start difference. First operand 377 states and 448 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:51,796 INFO L93 Difference]: Finished difference Result 376 states and 444 transitions. [2023-11-29 01:39:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-11-29 01:39:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:51,798 INFO L225 Difference]: With dead ends: 376 [2023-11-29 01:39:51,798 INFO L226 Difference]: Without dead ends: 376 [2023-11-29 01:39:51,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:51,799 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:51,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-29 01:39:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-11-29 01:39:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 342 states have (on average 1.2105263157894737) internal successors, (414), 357 states have internal predecessors, (414), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-29 01:39:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 444 transitions. [2023-11-29 01:39:51,806 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 444 transitions. Word has length 45 [2023-11-29 01:39:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:51,806 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 444 transitions. [2023-11-29 01:39:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 444 transitions. [2023-11-29 01:39:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:39:51,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:51,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:51,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:39:52,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:39:52,008 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:52,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash -973953377, now seen corresponding path program 1 times [2023-11-29 01:39:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194258193] [2023-11-29 01:39:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:52,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:52,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194258193] [2023-11-29 01:39:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194258193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099243275] [2023-11-29 01:39:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:52,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:52,144 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:52,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:39:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:39:52,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:52,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:39:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:39:52,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099243275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-29 01:39:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114227415] [2023-11-29 01:39:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:52,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:52,296 INFO L87 Difference]: Start difference. First operand 376 states and 444 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:52,356 INFO L93 Difference]: Finished difference Result 389 states and 451 transitions. [2023-11-29 01:39:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:39:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-11-29 01:39:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:52,359 INFO L225 Difference]: With dead ends: 389 [2023-11-29 01:39:52,359 INFO L226 Difference]: Without dead ends: 389 [2023-11-29 01:39:52,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:39:52,360 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 19 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:52,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 112 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-29 01:39:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 376. [2023-11-29 01:39:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 342 states have (on average 1.2017543859649122) internal successors, (411), 357 states have internal predecessors, (411), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-29 01:39:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 441 transitions. [2023-11-29 01:39:52,369 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 441 transitions. Word has length 46 [2023-11-29 01:39:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:52,370 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 441 transitions. [2023-11-29 01:39:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:39:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 441 transitions. [2023-11-29 01:39:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 01:39:52,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:52,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:52,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:39:52,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:39:52,572 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:52,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -169332805, now seen corresponding path program 1 times [2023-11-29 01:39:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:52,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663929669] [2023-11-29 01:39:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:39:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:39:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663929669] [2023-11-29 01:39:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663929669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290564735] [2023-11-29 01:39:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:52,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:52,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:39:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:52,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:39:52,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:53,004 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:39:53,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:39:53,056 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:39:53,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:39:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:39:53,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290564735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:53,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2023-11-29 01:39:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932602021] [2023-11-29 01:39:53,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:39:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:39:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:39:53,140 INFO L87 Difference]: Start difference. First operand 376 states and 441 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:39:53,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:53,509 INFO L93 Difference]: Finished difference Result 444 states and 512 transitions. [2023-11-29 01:39:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:39:53,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-29 01:39:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:53,511 INFO L225 Difference]: With dead ends: 444 [2023-11-29 01:39:53,511 INFO L226 Difference]: Without dead ends: 444 [2023-11-29 01:39:53,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:39:53,512 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 212 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:53,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 168 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-29 01:39:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 414. [2023-11-29 01:39:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 377 states have (on average 1.1962864721485411) internal successors, (451), 393 states have internal predecessors, (451), 10 states have call successors, (10), 10 states have call predecessors, (10), 20 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 01:39:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 485 transitions. [2023-11-29 01:39:53,521 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 485 transitions. Word has length 48 [2023-11-29 01:39:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:53,521 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 485 transitions. [2023-11-29 01:39:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:39:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 485 transitions. [2023-11-29 01:39:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:39:53,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:53,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:53,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:39:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:39:53,723 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:53,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash -954349610, now seen corresponding path program 1 times [2023-11-29 01:39:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144320732] [2023-11-29 01:39:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:39:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:39:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144320732] [2023-11-29 01:39:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144320732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090702863] [2023-11-29 01:39:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:54,103 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:54,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:39:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:54,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:39:54,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:54,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:39:54,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:39:54,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:54,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:54,590 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:39:54,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:39:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:39:54,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:39:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:54,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090702863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:54,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2023-11-29 01:39:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782556008] [2023-11-29 01:39:54,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:39:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:39:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:39:54,928 INFO L87 Difference]: Start difference. First operand 414 states and 485 transitions. Second operand has 25 states, 18 states have (on average 4.888888888888889) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:39:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:56,322 INFO L93 Difference]: Finished difference Result 453 states and 507 transitions. [2023-11-29 01:39:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:39:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 4.888888888888889) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-11-29 01:39:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:56,324 INFO L225 Difference]: With dead ends: 453 [2023-11-29 01:39:56,324 INFO L226 Difference]: Without dead ends: 453 [2023-11-29 01:39:56,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=686, Invalid=2394, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 01:39:56,326 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 707 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:56,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 409 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:39:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-29 01:39:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 416. [2023-11-29 01:39:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 381 states have (on average 1.162729658792651) internal successors, (443), 395 states have internal predecessors, (443), 10 states have call successors, (10), 10 states have call predecessors, (10), 19 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 01:39:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 475 transitions. [2023-11-29 01:39:56,336 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 475 transitions. Word has length 49 [2023-11-29 01:39:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:56,336 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 475 transitions. [2023-11-29 01:39:56,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 4.888888888888889) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:39:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 475 transitions. [2023-11-29 01:39:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:39:56,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:56,338 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:39:56,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:39:56,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:56,538 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:56,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash 139291547, now seen corresponding path program 1 times [2023-11-29 01:39:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:56,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273956980] [2023-11-29 01:39:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:39:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:39:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273956980] [2023-11-29 01:39:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273956980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829771604] [2023-11-29 01:39:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:56,709 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:56,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:39:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:56,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:39:56,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:56,925 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:39:56,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:39:57,059 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:39:57,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 01:39:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:39:57,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:57,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 01:39:57,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 01:39:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:39:57,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829771604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:57,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:57,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 22 [2023-11-29 01:39:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602843703] [2023-11-29 01:39:57,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:39:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:39:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:39:57,368 INFO L87 Difference]: Start difference. First operand 416 states and 475 transitions. Second operand has 23 states, 20 states have (on average 6.45) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:39:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:57,554 INFO L93 Difference]: Finished difference Result 433 states and 492 transitions. [2023-11-29 01:39:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:39:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.45) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 54 [2023-11-29 01:39:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:57,556 INFO L225 Difference]: With dead ends: 433 [2023-11-29 01:39:57,556 INFO L226 Difference]: Without dead ends: 433 [2023-11-29 01:39:57,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:39:57,557 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 164 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:57,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 90 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:57,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-29 01:39:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 415. [2023-11-29 01:39:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 381 states have (on average 1.1601049868766404) internal successors, (442), 394 states have internal predecessors, (442), 10 states have call successors, (10), 10 states have call predecessors, (10), 19 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 01:39:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 474 transitions. [2023-11-29 01:39:57,567 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 474 transitions. Word has length 54 [2023-11-29 01:39:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:57,567 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 474 transitions. [2023-11-29 01:39:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.45) internal successors, (129), 21 states have internal predecessors, (129), 6 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:39:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 474 transitions. [2023-11-29 01:39:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:39:57,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:57,569 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2023-11-29 01:39:57,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:39:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:57,769 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:39:57,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 23070642, now seen corresponding path program 1 times [2023-11-29 01:39:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595218280] [2023-11-29 01:39:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:39:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:39:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:39:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595218280] [2023-11-29 01:39:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595218280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:58,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130587081] [2023-11-29 01:39:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:58,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:58,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:58,271 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:58,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:39:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:58,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 01:39:58,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:58,592 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:39:58,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:39:58,888 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:39:58,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 01:39:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:39:59,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:59,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-11-29 01:39:59,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:39:59,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2023-11-29 01:39:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:39:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130587081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:59,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:39:59,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 39 [2023-11-29 01:39:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688051625] [2023-11-29 01:39:59,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:59,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 01:39:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 01:39:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:39:59,584 INFO L87 Difference]: Start difference. First operand 415 states and 474 transitions. Second operand has 41 states, 35 states have (on average 3.914285714285714) internal successors, (137), 32 states have internal predecessors, (137), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:40:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:00,402 INFO L93 Difference]: Finished difference Result 496 states and 559 transitions. [2023-11-29 01:40:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:40:00,402 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 3.914285714285714) internal successors, (137), 32 states have internal predecessors, (137), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2023-11-29 01:40:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:00,405 INFO L225 Difference]: With dead ends: 496 [2023-11-29 01:40:00,405 INFO L226 Difference]: Without dead ends: 496 [2023-11-29 01:40:00,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=467, Invalid=2289, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:40:00,407 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 490 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:00,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 215 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:40:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-29 01:40:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 415. [2023-11-29 01:40:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 381 states have (on average 1.1574803149606299) internal successors, (441), 394 states have internal predecessors, (441), 10 states have call successors, (10), 10 states have call predecessors, (10), 19 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 01:40:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 473 transitions. [2023-11-29 01:40:00,415 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 473 transitions. Word has length 55 [2023-11-29 01:40:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:00,415 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 473 transitions. [2023-11-29 01:40:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 3.914285714285714) internal successors, (137), 32 states have internal predecessors, (137), 8 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:40:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 473 transitions. [2023-11-29 01:40:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:40:00,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:00,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:00,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:40:00,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:00,616 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:00,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash 861481531, now seen corresponding path program 1 times [2023-11-29 01:40:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:00,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513399349] [2023-11-29 01:40:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:40:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:40:01,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513399349] [2023-11-29 01:40:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513399349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:01,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800402019] [2023-11-29 01:40:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:01,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:01,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:01,145 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:01,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:40:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:01,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 01:40:01,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:01,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:01,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:01,750 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:40:01,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:40:02,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:02,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:02,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:40:02,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:40:02,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:40:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:40:02,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800402019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:02,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:02,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2023-11-29 01:40:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145260679] [2023-11-29 01:40:02,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:02,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:40:02,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:40:02,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:40:02,624 INFO L87 Difference]: Start difference. First operand 415 states and 473 transitions. Second operand has 26 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:40:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:04,989 INFO L93 Difference]: Finished difference Result 590 states and 662 transitions. [2023-11-29 01:40:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:40:04,990 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2023-11-29 01:40:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:04,992 INFO L225 Difference]: With dead ends: 590 [2023-11-29 01:40:04,992 INFO L226 Difference]: Without dead ends: 590 [2023-11-29 01:40:04,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=959, Invalid=4153, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 01:40:04,994 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 973 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:04,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 290 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:40:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-11-29 01:40:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 375. [2023-11-29 01:40:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 346 states have (on average 1.1560693641618498) internal successors, (400), 356 states have internal predecessors, (400), 9 states have call successors, (9), 9 states have call predecessors, (9), 16 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-29 01:40:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 427 transitions. [2023-11-29 01:40:05,004 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 427 transitions. Word has length 55 [2023-11-29 01:40:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:05,005 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 427 transitions. [2023-11-29 01:40:05,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:40:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 427 transitions. [2023-11-29 01:40:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:40:05,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:05,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2023-11-29 01:40:05,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:05,213 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:05,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2088730410, now seen corresponding path program 1 times [2023-11-29 01:40:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054404494] [2023-11-29 01:40:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 01:40:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:40:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054404494] [2023-11-29 01:40:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054404494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307109420] [2023-11-29 01:40:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:05,451 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:05,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:40:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:05,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:40:05,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:40:05,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307109420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:06,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:40:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 25 [2023-11-29 01:40:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615234177] [2023-11-29 01:40:06,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:40:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:40:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:40:06,078 INFO L87 Difference]: Start difference. First operand 375 states and 427 transitions. Second operand has 25 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 6 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:40:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:07,944 INFO L93 Difference]: Finished difference Result 276 states and 304 transitions. [2023-11-29 01:40:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 01:40:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 6 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 57 [2023-11-29 01:40:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:07,946 INFO L225 Difference]: With dead ends: 276 [2023-11-29 01:40:07,946 INFO L226 Difference]: Without dead ends: 276 [2023-11-29 01:40:07,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=928, Invalid=3764, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:40:07,949 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 380 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:07,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 401 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:40:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-29 01:40:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 232. [2023-11-29 01:40:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 214 states have (on average 1.1355140186915889) internal successors, (243), 219 states have internal predecessors, (243), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-29 01:40:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 258 transitions. [2023-11-29 01:40:07,954 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 258 transitions. Word has length 57 [2023-11-29 01:40:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:07,954 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 258 transitions. [2023-11-29 01:40:07,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 6 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:40:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 258 transitions. [2023-11-29 01:40:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:40:07,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:07,955 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2023-11-29 01:40:07,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:40:08,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:08,156 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:08,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -355197301, now seen corresponding path program 2 times [2023-11-29 01:40:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:08,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479718483] [2023-11-29 01:40:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:40:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:40:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479718483] [2023-11-29 01:40:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479718483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333498035] [2023-11-29 01:40:08,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:40:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:08,490 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:40:08,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:40:08,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:40:08,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:40:08,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:08,768 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:40:08,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:40:09,030 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 01:40:09,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 01:40:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:09,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:09,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2023-11-29 01:40:09,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:40:09,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2023-11-29 01:40:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333498035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:09,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:40:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 40 [2023-11-29 01:40:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071836525] [2023-11-29 01:40:09,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:40:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:40:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:40:09,787 INFO L87 Difference]: Start difference. First operand 232 states and 258 transitions. Second operand has 42 states, 37 states have (on average 4.513513513513513) internal successors, (167), 34 states have internal predecessors, (167), 7 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:40:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:10,617 INFO L93 Difference]: Finished difference Result 266 states and 295 transitions. [2023-11-29 01:40:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:40:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 4.513513513513513) internal successors, (167), 34 states have internal predecessors, (167), 7 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 63 [2023-11-29 01:40:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:10,618 INFO L225 Difference]: With dead ends: 266 [2023-11-29 01:40:10,618 INFO L226 Difference]: Without dead ends: 266 [2023-11-29 01:40:10,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=544, Invalid=2536, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 01:40:10,620 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 503 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:10,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 238 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:40:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-29 01:40:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 231. [2023-11-29 01:40:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 214 states have (on average 1.1308411214953271) internal successors, (242), 218 states have internal predecessors, (242), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-29 01:40:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 257 transitions. [2023-11-29 01:40:10,623 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 257 transitions. Word has length 63 [2023-11-29 01:40:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:10,623 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 257 transitions. [2023-11-29 01:40:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 4.513513513513513) internal successors, (167), 34 states have internal predecessors, (167), 7 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:40:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 257 transitions. [2023-11-29 01:40:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:40:10,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:10,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:10,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:40:10,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:10,824 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:10,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1323634330, now seen corresponding path program 1 times [2023-11-29 01:40:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574817504] [2023-11-29 01:40:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:40:10,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:40:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:40:10,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:40:10,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:40:10,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-29 01:40:10,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-29 01:40:10,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-29 01:40:10,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-29 01:40:10,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2023-11-29 01:40:10,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2023-11-29 01:40:10,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-29 01:40:10,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-29 01:40:10,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-29 01:40:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 01:40:10,897 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-11-29 01:40:10,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:40:10,936 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,938 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,938 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,939 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,939 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,942 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:40:10,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,946 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,946 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:40:10,948 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,949 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,949 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,950 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,950 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:40:10,951 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:40:10,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:40:10 BoogieIcfgContainer [2023-11-29 01:40:10,961 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:40:10,962 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:40:10,962 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:40:10,962 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:40:10,963 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:27" (3/4) ... [2023-11-29 01:40:10,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:40:10,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:40:10,967 INFO L158 Benchmark]: Toolchain (without parser) took 44203.28ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 127.5MB in the beginning and 230.4MB in the end (delta: -102.9MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,967 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:40:10,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.51ms. Allocated memory is still 155.2MB. Free memory was 127.5MB in the beginning and 107.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.16ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 105.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,968 INFO L158 Benchmark]: Boogie Preprocessor took 49.52ms. Allocated memory is still 155.2MB. Free memory was 105.6MB in the beginning and 102.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,968 INFO L158 Benchmark]: RCFGBuilder took 405.02ms. Allocated memory is still 155.2MB. Free memory was 102.8MB in the beginning and 84.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,968 INFO L158 Benchmark]: TraceAbstraction took 43257.32ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 83.9MB in the beginning and 231.4MB in the end (delta: -147.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-11-29 01:40:10,969 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 325.1MB. Free memory is still 230.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:40:10,970 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.51ms. Allocated memory is still 155.2MB. Free memory was 127.5MB in the beginning and 107.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.16ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 105.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.52ms. Allocated memory is still 155.2MB. Free memory was 105.6MB in the beginning and 102.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 405.02ms. Allocated memory is still 155.2MB. Free memory was 102.8MB in the beginning and 84.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 43257.32ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 83.9MB in the beginning and 231.4MB in the end (delta: -147.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 325.1MB. Free memory is still 230.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 721. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L722] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={-3:0}, state=1, x={-3:0}] [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={-3:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, state=1] [L692] int i = 0; VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, state=1, x={7:0}] [L706] COND TRUE \read(*global) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, state=1, x={7:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1, x={7:0}] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L724] CALL parse_input("c2") VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1, x={-6:0}] [L706] COND TRUE \read(*global) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1, x={-6:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={-6:0}, state=1, x={-6:0}] [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={-6:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={-6:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 43.1s, OverallIterations: 36, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9423 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9421 mSDsluCounter, 7011 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5543 mSDsCounter, 1171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10326 IncrementalHoareTripleChecker+Invalid, 11497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1171 mSolverCounterUnsat, 1468 mSDtfsCounter, 10326 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1925 GetRequests, 1181 SyntacticMatches, 2 SemanticMatches, 742 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6406 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=19, InterpolantAutomatonStates: 455, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 35 MinimizatonAttempts, 1902 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 2036 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 2247 ConstructedInterpolants, 175 QuantifiedInterpolants, 29022 SizeOfPredicates, 118 NumberOfNonLiveVariables, 6027 ConjunctsInSsa, 476 ConjunctsInUnsatCore, 68 InterpolantComputations, 16 PerfectInterpolantSequences, 465/1299 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 01:40:10,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:40:12,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:40:13,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 01:40:13,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:40:13,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:40:13,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:40:13,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:40:13,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:40:13,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:40:13,119 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:40:13,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:40:13,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:40:13,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:40:13,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:40:13,123 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:40:13,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:40:13,124 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:40:13,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:40:13,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:40:13,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:40:13,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:40:13,127 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:40:13,127 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:40:13,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:40:13,128 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:40:13,128 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:40:13,128 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:40:13,129 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:40:13,129 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:40:13,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:40:13,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:40:13,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:40:13,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:40:13,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:40:13,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:40:13,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:40:13,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:40:13,132 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:40:13,133 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:40:13,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:40:13,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:40:13,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:40:13,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:40:13,134 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:40:13,134 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_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2023-11-29 01:40:13,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:40:13,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:40:13,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:40:13,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:40:13,474 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:40:13,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2023-11-29 01:40:16,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:40:16,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:40:16,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2023-11-29 01:40:16,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/03a1b53fe/8b1a3df4b57b4bae8874c411ccd7c152/FLAG06f06fe9b [2023-11-29 01:40:16,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/data/03a1b53fe/8b1a3df4b57b4bae8874c411ccd7c152 [2023-11-29 01:40:16,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:40:16,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:40:16,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:40:16,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:40:16,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:40:16,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:40:16" (1/1) ... [2023-11-29 01:40:16,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9889690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:16, skipping insertion in model container [2023-11-29 01:40:16,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:40:16" (1/1) ... [2023-11-29 01:40:16,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:40:16,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:40:17,005 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:40:17,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:40:17,122 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:40:17,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17 WrapperNode [2023-11-29 01:40:17,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:40:17,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:40:17,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:40:17,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:40:17,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,170 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2023-11-29 01:40:17,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:40:17,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:40:17,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:40:17,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:40:17,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,202 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [6, 9, 9]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 6, 9]. The 0 writes are split as follows [0, 0, 0]. [2023-11-29 01:40:17,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:40:17,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:40:17,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:40:17,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:40:17,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (1/1) ... [2023-11-29 01:40:17,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:40:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:17,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:40:17,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:40:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 01:40:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 01:40:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 01:40:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-29 01:40:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-29 01:40:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:40:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:40:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:40:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:40:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:40:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:40:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:40:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:40:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:40:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:40:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 01:40:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 01:40:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:40:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:40:17,433 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:40:17,435 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:40:17,705 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:40:17,742 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:40:17,743 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:40:17,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:40:17 BoogieIcfgContainer [2023-11-29 01:40:17,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:40:17,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:40:17,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:40:17,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:40:17,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:40:16" (1/3) ... [2023-11-29 01:40:17,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c5e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:40:17, skipping insertion in model container [2023-11-29 01:40:17,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:40:17" (2/3) ... [2023-11-29 01:40:17,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c5e9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:40:17, skipping insertion in model container [2023-11-29 01:40:17,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:40:17" (3/3) ... [2023-11-29 01:40:17,754 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2023-11-29 01:40:17,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:40:17,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 01:40:17,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:40:17,827 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@426c88ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:40:17,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 01:40:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:40:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:40:17,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:17,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:40:17,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 131378568, now seen corresponding path program 1 times [2023-11-29 01:40:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579813801] [2023-11-29 01:40:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:17,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:17,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:17,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 01:40:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:17,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:40:17,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:18,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:18,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579813801] [2023-11-29 01:40:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579813801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:18,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:18,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:40:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606124242] [2023-11-29 01:40:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:40:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:40:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:18,127 INFO L87 Difference]: Start difference. First operand has 59 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:18,302 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2023-11-29 01:40:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:40:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:18,313 INFO L225 Difference]: With dead ends: 106 [2023-11-29 01:40:18,313 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 01:40:18,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:18,319 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 50 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:18,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 96 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:40:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 01:40:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 81. [2023-11-29 01:40:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 73 states have internal predecessors, (93), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 01:40:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2023-11-29 01:40:18,368 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 106 transitions. Word has length 5 [2023-11-29 01:40:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:18,368 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 106 transitions. [2023-11-29 01:40:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2023-11-29 01:40:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:40:18,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:18,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:40:18,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:18,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:18,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash 131378569, now seen corresponding path program 1 times [2023-11-29 01:40:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:18,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123619506] [2023-11-29 01:40:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:18,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:18,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:18,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:18,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 01:40:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:18,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:40:18,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:18,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:18,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:18,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123619506] [2023-11-29 01:40:18,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123619506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:18,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:40:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530774081] [2023-11-29 01:40:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:40:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:40:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:40:18,743 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:18,962 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2023-11-29 01:40:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:40:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:40:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:18,966 INFO L225 Difference]: With dead ends: 204 [2023-11-29 01:40:18,966 INFO L226 Difference]: Without dead ends: 204 [2023-11-29 01:40:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:40:18,968 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 140 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:18,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 141 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:40:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-29 01:40:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 148. [2023-11-29 01:40:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 116 states have (on average 1.7672413793103448) internal successors, (205), 135 states have internal predecessors, (205), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 01:40:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 231 transitions. [2023-11-29 01:40:18,992 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 231 transitions. Word has length 5 [2023-11-29 01:40:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:18,992 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 231 transitions. [2023-11-29 01:40:18,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 231 transitions. [2023-11-29 01:40:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:40:18,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:18,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:40:18,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 01:40:19,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:19,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:19,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash -222231707, now seen corresponding path program 1 times [2023-11-29 01:40:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95462182] [2023-11-29 01:40:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:19,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:19,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:19,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:19,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 01:40:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:19,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:40:19,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:19,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:19,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95462182] [2023-11-29 01:40:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95462182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:40:19,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155461326] [2023-11-29 01:40:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:19,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:40:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:19,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:40:19,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:40:19,394 INFO L87 Difference]: Start difference. First operand 148 states and 231 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:19,702 INFO L93 Difference]: Finished difference Result 225 states and 325 transitions. [2023-11-29 01:40:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 01:40:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:19,706 INFO L225 Difference]: With dead ends: 225 [2023-11-29 01:40:19,707 INFO L226 Difference]: Without dead ends: 225 [2023-11-29 01:40:19,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:19,709 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 130 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:19,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 160 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:40:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-29 01:40:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 151. [2023-11-29 01:40:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 119 states have (on average 1.7478991596638656) internal successors, (208), 138 states have internal predecessors, (208), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 01:40:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 234 transitions. [2023-11-29 01:40:19,729 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 234 transitions. Word has length 6 [2023-11-29 01:40:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:19,729 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 234 transitions. [2023-11-29 01:40:19,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 234 transitions. [2023-11-29 01:40:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:40:19,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:19,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:19,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 01:40:19,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:19,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:19,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1700751720, now seen corresponding path program 1 times [2023-11-29 01:40:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:19,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152645311] [2023-11-29 01:40:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:19,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:19,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:19,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 01:40:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:19,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:40:19,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:20,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:20,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152645311] [2023-11-29 01:40:20,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152645311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:20,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:20,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:40:20,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122959589] [2023-11-29 01:40:20,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:20,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:40:20,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:40:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:40:20,151 INFO L87 Difference]: Start difference. First operand 151 states and 234 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:20,405 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2023-11-29 01:40:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:40:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:20,408 INFO L225 Difference]: With dead ends: 206 [2023-11-29 01:40:20,408 INFO L226 Difference]: Without dead ends: 206 [2023-11-29 01:40:20,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:20,410 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 143 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 186 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:40:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-29 01:40:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 151. [2023-11-29 01:40:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 119 states have (on average 1.73109243697479) internal successors, (206), 138 states have internal predecessors, (206), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 01:40:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 232 transitions. [2023-11-29 01:40:20,426 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 232 transitions. Word has length 7 [2023-11-29 01:40:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:20,426 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 232 transitions. [2023-11-29 01:40:20,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 232 transitions. [2023-11-29 01:40:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:40:20,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:20,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:20,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 01:40:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:20,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:20,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1183695815, now seen corresponding path program 1 times [2023-11-29 01:40:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570259089] [2023-11-29 01:40:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:20,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:20,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:20,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 01:40:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:20,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:40:20,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:20,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:20,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570259089] [2023-11-29 01:40:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570259089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:40:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838230809] [2023-11-29 01:40:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:40:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:40:20,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:40:20,767 INFO L87 Difference]: Start difference. First operand 151 states and 232 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:20,938 INFO L93 Difference]: Finished difference Result 233 states and 322 transitions. [2023-11-29 01:40:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 01:40:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:20,944 INFO L225 Difference]: With dead ends: 233 [2023-11-29 01:40:20,944 INFO L226 Difference]: Without dead ends: 233 [2023-11-29 01:40:20,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:20,946 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 131 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:20,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 185 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:40:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-29 01:40:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 184. [2023-11-29 01:40:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 150 states have (on average 1.68) internal successors, (252), 170 states have internal predecessors, (252), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 01:40:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 278 transitions. [2023-11-29 01:40:20,960 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 278 transitions. Word has length 8 [2023-11-29 01:40:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:20,960 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 278 transitions. [2023-11-29 01:40:20,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 278 transitions. [2023-11-29 01:40:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:40:20,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:20,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:20,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:21,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:21,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1960135350, now seen corresponding path program 1 times [2023-11-29 01:40:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:21,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406397376] [2023-11-29 01:40:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:21,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:21,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:21,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:21,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 01:40:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:40:21,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:21,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:21,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406397376] [2023-11-29 01:40:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406397376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:21,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:21,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:40:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794557537] [2023-11-29 01:40:21,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:40:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:40:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:40:21,320 INFO L87 Difference]: Start difference. First operand 184 states and 278 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:21,545 INFO L93 Difference]: Finished difference Result 234 states and 301 transitions. [2023-11-29 01:40:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:21,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 01:40:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:21,548 INFO L225 Difference]: With dead ends: 234 [2023-11-29 01:40:21,548 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 01:40:21,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:21,549 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 140 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:21,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 212 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:40:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 01:40:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2023-11-29 01:40:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 163 states have (on average 1.6748466257668713) internal successors, (273), 184 states have internal predecessors, (273), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 01:40:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 299 transitions. [2023-11-29 01:40:21,563 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 299 transitions. Word has length 9 [2023-11-29 01:40:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:21,564 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 299 transitions. [2023-11-29 01:40:21,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 299 transitions. [2023-11-29 01:40:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:40:21,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:21,565 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:21,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 01:40:21,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:21,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:21,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash -519071088, now seen corresponding path program 1 times [2023-11-29 01:40:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:21,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044821032] [2023-11-29 01:40:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:21,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:21,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:21,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:21,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 01:40:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:40:21,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:22,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:22,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:22,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044821032] [2023-11-29 01:40:22,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044821032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:22,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:22,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-29 01:40:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128801009] [2023-11-29 01:40:22,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:22,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:40:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:40:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:40:22,335 INFO L87 Difference]: Start difference. First operand 198 states and 299 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:22,906 INFO L93 Difference]: Finished difference Result 354 states and 476 transitions. [2023-11-29 01:40:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:40:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 01:40:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:22,910 INFO L225 Difference]: With dead ends: 354 [2023-11-29 01:40:22,910 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 01:40:22,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:40:22,911 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 268 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:22,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 315 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:40:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 01:40:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 233. [2023-11-29 01:40:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 196 states have (on average 1.653061224489796) internal successors, (324), 219 states have internal predecessors, (324), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-29 01:40:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 353 transitions. [2023-11-29 01:40:22,925 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 353 transitions. Word has length 13 [2023-11-29 01:40:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:22,925 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 353 transitions. [2023-11-29 01:40:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 353 transitions. [2023-11-29 01:40:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:40:22,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:22,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:22,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 01:40:23,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:23,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:23,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1088665406, now seen corresponding path program 1 times [2023-11-29 01:40:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351733393] [2023-11-29 01:40:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:23,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:23,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 01:40:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:23,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:40:23,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:23,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:23,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351733393] [2023-11-29 01:40:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351733393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:23,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 01:40:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358861329] [2023-11-29 01:40:23,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:40:23,606 INFO L87 Difference]: Start difference. First operand 233 states and 353 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:24,112 INFO L93 Difference]: Finished difference Result 386 states and 557 transitions. [2023-11-29 01:40:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:40:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 01:40:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:24,116 INFO L225 Difference]: With dead ends: 386 [2023-11-29 01:40:24,116 INFO L226 Difference]: Without dead ends: 386 [2023-11-29 01:40:24,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:40:24,118 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 290 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:24,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 294 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:40:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-29 01:40:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 243. [2023-11-29 01:40:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 206 states have (on average 1.645631067961165) internal successors, (339), 229 states have internal predecessors, (339), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-29 01:40:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 368 transitions. [2023-11-29 01:40:24,133 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 368 transitions. Word has length 14 [2023-11-29 01:40:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:24,133 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 368 transitions. [2023-11-29 01:40:24,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 368 transitions. [2023-11-29 01:40:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:40:24,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:24,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:24,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 01:40:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:24,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -611110737, now seen corresponding path program 1 times [2023-11-29 01:40:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144146894] [2023-11-29 01:40:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:24,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:24,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:24,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 01:40:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:24,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:40:24,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:24,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:24,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144146894] [2023-11-29 01:40:24,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144146894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:24,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:24,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 01:40:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119669849] [2023-11-29 01:40:24,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:24,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:24,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:40:24,837 INFO L87 Difference]: Start difference. First operand 243 states and 368 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:25,935 INFO L93 Difference]: Finished difference Result 582 states and 764 transitions. [2023-11-29 01:40:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:40:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:40:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:25,940 INFO L225 Difference]: With dead ends: 582 [2023-11-29 01:40:25,940 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 01:40:25,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:40:25,941 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 565 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:25,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 491 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:40:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 01:40:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 330. [2023-11-29 01:40:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 287 states have (on average 1.6411149825783973) internal successors, (471), 314 states have internal predecessors, (471), 9 states have call successors, (9), 6 states have call predecessors, (9), 14 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2023-11-29 01:40:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 510 transitions. [2023-11-29 01:40:25,962 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 510 transitions. Word has length 15 [2023-11-29 01:40:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 510 transitions. [2023-11-29 01:40:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 510 transitions. [2023-11-29 01:40:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:40:25,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:25,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:25,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,164 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -905176023, now seen corresponding path program 1 times [2023-11-29 01:40:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134138509] [2023-11-29 01:40:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:26,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:26,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 01:40:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:40:26,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:26,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:26,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134138509] [2023-11-29 01:40:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134138509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:26,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:26,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:40:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368901415] [2023-11-29 01:40:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:26,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:40:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:40:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:26,251 INFO L87 Difference]: Start difference. First operand 330 states and 510 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:26,288 INFO L93 Difference]: Finished difference Result 479 states and 737 transitions. [2023-11-29 01:40:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:40:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:26,291 INFO L225 Difference]: With dead ends: 479 [2023-11-29 01:40:26,291 INFO L226 Difference]: Without dead ends: 479 [2023-11-29 01:40:26,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:26,291 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 50 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:26,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 105 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:40:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-29 01:40:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 459. [2023-11-29 01:40:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 405 states have (on average 1.634567901234568) internal successors, (662), 436 states have internal predecessors, (662), 13 states have call successors, (13), 9 states have call predecessors, (13), 21 states have return successors, (54), 13 states have call predecessors, (54), 13 states have call successors, (54) [2023-11-29 01:40:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 729 transitions. [2023-11-29 01:40:26,311 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 729 transitions. Word has length 16 [2023-11-29 01:40:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:26,311 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 729 transitions. [2023-11-29 01:40:26,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 729 transitions. [2023-11-29 01:40:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:40:26,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:26,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:26,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 01:40:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -905175767, now seen corresponding path program 1 times [2023-11-29 01:40:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441930236] [2023-11-29 01:40:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:26,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:26,514 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:26,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 01:40:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:40:26,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:26,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:26,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:26,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441930236] [2023-11-29 01:40:26,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441930236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:26,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:26,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:40:26,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786966608] [2023-11-29 01:40:26,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:26,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:40:26,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:40:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:26,630 INFO L87 Difference]: Start difference. First operand 459 states and 729 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:26,677 INFO L93 Difference]: Finished difference Result 511 states and 778 transitions. [2023-11-29 01:40:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:40:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:26,680 INFO L225 Difference]: With dead ends: 511 [2023-11-29 01:40:26,680 INFO L226 Difference]: Without dead ends: 511 [2023-11-29 01:40:26,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:26,681 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 35 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:26,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 105 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:40:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-29 01:40:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 493. [2023-11-29 01:40:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 435 states have (on average 1.6114942528735632) internal successors, (701), 468 states have internal predecessors, (701), 14 states have call successors, (14), 10 states have call predecessors, (14), 24 states have return successors, (57), 14 states have call predecessors, (57), 14 states have call successors, (57) [2023-11-29 01:40:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 772 transitions. [2023-11-29 01:40:26,700 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 772 transitions. Word has length 16 [2023-11-29 01:40:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:26,701 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 772 transitions. [2023-11-29 01:40:26,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 772 transitions. [2023-11-29 01:40:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:40:26,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:26,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:26,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:26,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2004314431, now seen corresponding path program 1 times [2023-11-29 01:40:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553996986] [2023-11-29 01:40:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:26,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:26,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:26,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 01:40:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:40:26,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:27,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:27,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:27,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553996986] [2023-11-29 01:40:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553996986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:27,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:40:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744956304] [2023-11-29 01:40:27,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:40:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:40:27,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:27,036 INFO L87 Difference]: Start difference. First operand 493 states and 772 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:27,095 INFO L93 Difference]: Finished difference Result 508 states and 772 transitions. [2023-11-29 01:40:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 01:40:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:27,100 INFO L225 Difference]: With dead ends: 508 [2023-11-29 01:40:27,100 INFO L226 Difference]: Without dead ends: 508 [2023-11-29 01:40:27,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:27,101 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:27,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 104 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:40:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-29 01:40:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 493. [2023-11-29 01:40:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 435 states have (on average 1.6022988505747127) internal successors, (697), 468 states have internal predecessors, (697), 14 states have call successors, (14), 10 states have call predecessors, (14), 24 states have return successors, (57), 14 states have call predecessors, (57), 14 states have call successors, (57) [2023-11-29 01:40:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 768 transitions. [2023-11-29 01:40:27,115 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 768 transitions. Word has length 17 [2023-11-29 01:40:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:27,116 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 768 transitions. [2023-11-29 01:40:27,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 768 transitions. [2023-11-29 01:40:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:40:27,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:27,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 01:40:27,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 01:40:27,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:27,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:27,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1223463063, now seen corresponding path program 2 times [2023-11-29 01:40:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:27,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804817274] [2023-11-29 01:40:27,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:40:27,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:27,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:27,320 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:27,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 01:40:27,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:40:27,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:40:27,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:40:27,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:27,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:28,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804817274] [2023-11-29 01:40:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804817274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:28,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:28,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 01:40:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878966989] [2023-11-29 01:40:28,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:40:28,234 INFO L87 Difference]: Start difference. First operand 493 states and 768 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:29,587 INFO L93 Difference]: Finished difference Result 751 states and 1087 transitions. [2023-11-29 01:40:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:40:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:40:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:29,592 INFO L225 Difference]: With dead ends: 751 [2023-11-29 01:40:29,592 INFO L226 Difference]: Without dead ends: 751 [2023-11-29 01:40:29,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:40:29,593 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 464 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:29,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 377 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:40:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-29 01:40:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 506. [2023-11-29 01:40:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 449 states have (on average 1.6169265033407572) internal successors, (726), 481 states have internal predecessors, (726), 14 states have call successors, (14), 10 states have call predecessors, (14), 23 states have return successors, (48), 14 states have call predecessors, (48), 14 states have call successors, (48) [2023-11-29 01:40:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 788 transitions. [2023-11-29 01:40:29,619 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 788 transitions. Word has length 21 [2023-11-29 01:40:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:29,619 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 788 transitions. [2023-11-29 01:40:29,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:40:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 788 transitions. [2023-11-29 01:40:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:40:29,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:29,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:29,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 01:40:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:29,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1348043702, now seen corresponding path program 1 times [2023-11-29 01:40:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853986222] [2023-11-29 01:40:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:29,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:29,828 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:29,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 01:40:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:29,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:40:29,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:29,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:29,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853986222] [2023-11-29 01:40:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853986222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:40:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427610444] [2023-11-29 01:40:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:40:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:40:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:29,922 INFO L87 Difference]: Start difference. First operand 506 states and 788 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:29,944 INFO L93 Difference]: Finished difference Result 350 states and 525 transitions. [2023-11-29 01:40:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:40:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-29 01:40:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:29,947 INFO L225 Difference]: With dead ends: 350 [2023-11-29 01:40:29,948 INFO L226 Difference]: Without dead ends: 350 [2023-11-29 01:40:29,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:40:29,948 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:29,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:40:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-29 01:40:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2023-11-29 01:40:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 304 states have (on average 1.5953947368421053) internal successors, (485), 331 states have internal predecessors, (485), 10 states have call successors, (10), 7 states have call predecessors, (10), 15 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 01:40:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 524 transitions. [2023-11-29 01:40:29,961 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 524 transitions. Word has length 23 [2023-11-29 01:40:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:29,962 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 524 transitions. [2023-11-29 01:40:29,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 524 transitions. [2023-11-29 01:40:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:40:29,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:29,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:29,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 01:40:30,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:30,165 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:30,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1173620402, now seen corresponding path program 1 times [2023-11-29 01:40:30,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:30,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799737967] [2023-11-29 01:40:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:30,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:30,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:30,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 01:40:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:30,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:40:30,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:30,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:30,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:30,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:34,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799737967] [2023-11-29 01:40:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799737967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286507437] [2023-11-29 01:40:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:40:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:40:34,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:40:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-29 01:40:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:35,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:40:35,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:35,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:35,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:35,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286507437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:35,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 01:40:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046160081] [2023-11-29 01:40:35,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:40:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:40:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2023-11-29 01:40:35,735 INFO L87 Difference]: Start difference. First operand 349 states and 524 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:39,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:44,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:52,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:52,495 INFO L93 Difference]: Finished difference Result 468 states and 651 transitions. [2023-11-29 01:40:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:40:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-29 01:40:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:52,499 INFO L225 Difference]: With dead ends: 468 [2023-11-29 01:40:52,499 INFO L226 Difference]: Without dead ends: 468 [2023-11-29 01:40:52,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=113, Invalid=228, Unknown=1, NotChecked=0, Total=342 [2023-11-29 01:40:52,500 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 202 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 44 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:52,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 119 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 118 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2023-11-29 01:40:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-29 01:40:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 355. [2023-11-29 01:40:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 311 states have (on average 1.4887459807073955) internal successors, (463), 335 states have internal predecessors, (463), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:40:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 506 transitions. [2023-11-29 01:40:52,516 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 506 transitions. Word has length 25 [2023-11-29 01:40:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 506 transitions. [2023-11-29 01:40:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 506 transitions. [2023-11-29 01:40:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:40:52,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:52,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:52,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:40:52,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-11-29 01:40:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:40:52,921 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:52,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash -177446873, now seen corresponding path program 1 times [2023-11-29 01:40:52,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:52,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235033009] [2023-11-29 01:40:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:52,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:52,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:52,923 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:52,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 01:40:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:52,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:40:52,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:53,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:53,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235033009] [2023-11-29 01:40:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235033009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:53,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:40:53,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:40:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109632497] [2023-11-29 01:40:53,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:53,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:40:53,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:40:53,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:40:53,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:40:53,105 INFO L87 Difference]: Start difference. First operand 355 states and 506 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:53,245 INFO L93 Difference]: Finished difference Result 404 states and 559 transitions. [2023-11-29 01:40:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:53,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-29 01:40:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:53,248 INFO L225 Difference]: With dead ends: 404 [2023-11-29 01:40:53,248 INFO L226 Difference]: Without dead ends: 404 [2023-11-29 01:40:53,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:53,249 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 91 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:53,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 141 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:40:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-29 01:40:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 361. [2023-11-29 01:40:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 317 states have (on average 1.4794952681388012) internal successors, (469), 341 states have internal predecessors, (469), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:40:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 512 transitions. [2023-11-29 01:40:53,260 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 512 transitions. Word has length 26 [2023-11-29 01:40:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:53,260 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 512 transitions. [2023-11-29 01:40:53,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:40:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 512 transitions. [2023-11-29 01:40:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:40:53,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:53,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:53,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 01:40:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:53,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:40:53,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1727191021, now seen corresponding path program 1 times [2023-11-29 01:40:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:40:53,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198878618] [2023-11-29 01:40:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:53,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:40:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:40:53,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:40:53,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 01:40:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:53,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:40:53,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:54,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:54,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:58,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:40:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198878618] [2023-11-29 01:40:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198878618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [644243090] [2023-11-29 01:40:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:58,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:40:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:40:58,550 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:40:58,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-29 01:40:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:58,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:40:58,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:59,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:59,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:40:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:59,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [644243090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:03,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2023-11-29 01:41:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986472247] [2023-11-29 01:41:03,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:41:03,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:41:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2023-11-29 01:41:03,559 INFO L87 Difference]: Start difference. First operand 361 states and 512 transitions. Second operand has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:08,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:12,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:12,642 INFO L93 Difference]: Finished difference Result 405 states and 555 transitions. [2023-11-29 01:41:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:41:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-29 01:41:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:12,646 INFO L225 Difference]: With dead ends: 405 [2023-11-29 01:41:12,646 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 01:41:12,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=174, Invalid=425, Unknown=1, NotChecked=0, Total=600 [2023-11-29 01:41:12,646 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 175 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 166 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-11-29 01:41:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 01:41:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 362. [2023-11-29 01:41:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 318 states have (on average 1.4622641509433962) internal successors, (465), 342 states have internal predecessors, (465), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 01:41:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 508 transitions. [2023-11-29 01:41:12,655 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 508 transitions. Word has length 27 [2023-11-29 01:41:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:12,655 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 508 transitions. [2023-11-29 01:41:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 508 transitions. [2023-11-29 01:41:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 01:41:12,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:12,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:12,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 01:41:12,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-11-29 01:41:13,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:41:13,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:13,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2003314146, now seen corresponding path program 1 times [2023-11-29 01:41:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875799901] [2023-11-29 01:41:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:13,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:13,061 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:13,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 01:41:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:13,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:41:13,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:13,192 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)))) is different from true [2023-11-29 01:41:13,235 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:41:13,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:41:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:13,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:13,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875799901] [2023-11-29 01:41:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875799901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:13,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:13,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-11-29 01:41:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131048040] [2023-11-29 01:41:13,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:13,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:41:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:41:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2023-11-29 01:41:13,481 INFO L87 Difference]: Start difference. First operand 362 states and 508 transitions. Second operand has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:41:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:13,951 INFO L93 Difference]: Finished difference Result 513 states and 661 transitions. [2023-11-29 01:41:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:41:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-29 01:41:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:13,954 INFO L225 Difference]: With dead ends: 513 [2023-11-29 01:41:13,954 INFO L226 Difference]: Without dead ends: 513 [2023-11-29 01:41:13,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=252, Unknown=8, NotChecked=36, Total=420 [2023-11-29 01:41:13,955 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 319 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 227 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 179 Invalid, 0 Unknown, 180 Unchecked, 0.3s Time] [2023-11-29 01:41:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-29 01:41:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 443. [2023-11-29 01:41:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 396 states have (on average 1.4141414141414141) internal successors, (560), 421 states have internal predecessors, (560), 11 states have call successors, (11), 10 states have call predecessors, (11), 18 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-29 01:41:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 602 transitions. [2023-11-29 01:41:13,964 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 602 transitions. Word has length 28 [2023-11-29 01:41:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 602 transitions. [2023-11-29 01:41:13,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:41:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 602 transitions. [2023-11-29 01:41:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 01:41:13,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:13,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:13,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 01:41:14,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:14,166 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:14,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1973196431, now seen corresponding path program 1 times [2023-11-29 01:41:14,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:14,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913913548] [2023-11-29 01:41:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:14,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:14,167 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:14,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 01:41:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:14,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:41:14,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:14,411 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (select |c_#length| |parse_input_c1_~x~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2023-11-29 01:41:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:41:14,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:41:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:14,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:14,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913913548] [2023-11-29 01:41:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913913548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [188437386] [2023-11-29 01:41:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:14,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:41:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:41:14,733 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:41:14,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-29 01:41:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:14,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:41:14,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:15,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:41:15,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:41:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:15,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [188437386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:15,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:15,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 01:41:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766252120] [2023-11-29 01:41:15,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:15,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:41:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:41:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2023-11-29 01:41:15,205 INFO L87 Difference]: Start difference. First operand 443 states and 602 transitions. Second operand has 8 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:15,831 INFO L93 Difference]: Finished difference Result 607 states and 755 transitions. [2023-11-29 01:41:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:41:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-29 01:41:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:15,834 INFO L225 Difference]: With dead ends: 607 [2023-11-29 01:41:15,834 INFO L226 Difference]: Without dead ends: 607 [2023-11-29 01:41:15,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=291, Unknown=1, NotChecked=38, Total=462 [2023-11-29 01:41:15,835 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 376 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:15,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 202 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 228 Unchecked, 0.4s Time] [2023-11-29 01:41:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-29 01:41:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 534. [2023-11-29 01:41:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 484 states have (on average 1.3884297520661157) internal successors, (672), 511 states have internal predecessors, (672), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 01:41:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 710 transitions. [2023-11-29 01:41:15,845 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 710 transitions. Word has length 29 [2023-11-29 01:41:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:15,846 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 710 transitions. [2023-11-29 01:41:15,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 710 transitions. [2023-11-29 01:41:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:41:15,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:15,847 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:15,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 01:41:16,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-29 01:41:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:41:16,247 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:16,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1854582443, now seen corresponding path program 1 times [2023-11-29 01:41:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649110152] [2023-11-29 01:41:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:16,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:16,249 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:16,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 01:41:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:16,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:41:16,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:41:16,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:41:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:16,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:21,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649110152] [2023-11-29 01:41:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649110152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:21,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569197631] [2023-11-29 01:41:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:21,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:41:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:41:21,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:41:21,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-29 01:41:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:21,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:41:21,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:22,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:41:22,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:41:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:22,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:22,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569197631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:22,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:22,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 01:41:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656717960] [2023-11-29 01:41:22,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:22,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:41:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:41:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2023-11-29 01:41:22,602 INFO L87 Difference]: Start difference. First operand 534 states and 710 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:26,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:31,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:35,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:39,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:39,603 INFO L93 Difference]: Finished difference Result 719 states and 919 transitions. [2023-11-29 01:41:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:41:39,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-29 01:41:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:39,607 INFO L225 Difference]: With dead ends: 719 [2023-11-29 01:41:39,607 INFO L226 Difference]: Without dead ends: 719 [2023-11-29 01:41:39,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=163, Invalid=388, Unknown=1, NotChecked=0, Total=552 [2023-11-29 01:41:39,608 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 236 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 44 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:39,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 172 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 192 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2023-11-29 01:41:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-29 01:41:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 539. [2023-11-29 01:41:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 489 states have (on average 1.359918200408998) internal successors, (665), 516 states have internal predecessors, (665), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-29 01:41:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 703 transitions. [2023-11-29 01:41:39,622 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 703 transitions. Word has length 33 [2023-11-29 01:41:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:39,622 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 703 transitions. [2023-11-29 01:41:39,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 703 transitions. [2023-11-29 01:41:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:41:39,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:39,623 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 01:41:39,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 01:41:39,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-29 01:41:40,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:41:40,024 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:40,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2145365376, now seen corresponding path program 1 times [2023-11-29 01:41:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:40,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510922857] [2023-11-29 01:41:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:40,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:40,026 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 01:41:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:40,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:41:40,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:40,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:41:41,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510922857] [2023-11-29 01:41:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510922857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:41,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:41,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 01:41:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454205920] [2023-11-29 01:41:41,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:41,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:41:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:41:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:41:41,297 INFO L87 Difference]: Start difference. First operand 539 states and 703 transitions. Second operand has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:41:42,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:42,432 INFO L93 Difference]: Finished difference Result 473 states and 607 transitions. [2023-11-29 01:41:42,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:41:42,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-29 01:41:42,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:42,435 INFO L225 Difference]: With dead ends: 473 [2023-11-29 01:41:42,436 INFO L226 Difference]: Without dead ends: 473 [2023-11-29 01:41:42,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:41:42,436 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 239 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:42,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 657 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:41:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-29 01:41:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 355. [2023-11-29 01:41:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 317 states have (on average 1.3817034700315458) internal successors, (438), 340 states have internal predecessors, (438), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 460 transitions. [2023-11-29 01:41:42,446 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 460 transitions. Word has length 34 [2023-11-29 01:41:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:42,447 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 460 transitions. [2023-11-29 01:41:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:41:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 460 transitions. [2023-11-29 01:41:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 01:41:42,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:42,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:42,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-29 01:41:42,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:42,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:42,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash -120547086, now seen corresponding path program 1 times [2023-11-29 01:41:42,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062833779] [2023-11-29 01:41:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:42,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:42,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:42,651 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:42,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 01:41:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:42,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:41:42,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:41:42,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:41:42,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062833779] [2023-11-29 01:41:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062833779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:42,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:41:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207957392] [2023-11-29 01:41:42,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:41:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:41:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:41:42,941 INFO L87 Difference]: Start difference. First operand 355 states and 460 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:43,019 INFO L93 Difference]: Finished difference Result 333 states and 404 transitions. [2023-11-29 01:41:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:41:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-11-29 01:41:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:43,023 INFO L225 Difference]: With dead ends: 333 [2023-11-29 01:41:43,023 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 01:41:43,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:41:43,024 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 150 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:43,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 226 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:41:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 01:41:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 304. [2023-11-29 01:41:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 269 states have (on average 1.304832713754647) internal successors, (351), 289 states have internal predecessors, (351), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2023-11-29 01:41:43,032 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 42 [2023-11-29 01:41:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:43,033 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2023-11-29 01:41:43,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2023-11-29 01:41:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 01:41:43,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:43,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:43,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-29 01:41:43,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:43,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 977756381, now seen corresponding path program 1 times [2023-11-29 01:41:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26664286] [2023-11-29 01:41:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:43,236 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:43,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 01:41:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:43,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:41:43,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:41:43,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:41:43,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:43,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26664286] [2023-11-29 01:41:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26664286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:41:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:41:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:41:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815186377] [2023-11-29 01:41:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:43,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:41:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:41:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:41:43,375 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:43,415 INFO L93 Difference]: Finished difference Result 302 states and 367 transitions. [2023-11-29 01:41:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:41:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-11-29 01:41:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:43,416 INFO L225 Difference]: With dead ends: 302 [2023-11-29 01:41:43,417 INFO L226 Difference]: Without dead ends: 302 [2023-11-29 01:41:43,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:41:43,417 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:43,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 94 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:41:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-29 01:41:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2023-11-29 01:41:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.273764258555133) internal successors, (335), 281 states have internal predecessors, (335), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 357 transitions. [2023-11-29 01:41:43,424 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 357 transitions. Word has length 44 [2023-11-29 01:41:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 357 transitions. [2023-11-29 01:41:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 357 transitions. [2023-11-29 01:41:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 01:41:43,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:43,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:43,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 01:41:43,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,628 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:43,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash 977756637, now seen corresponding path program 1 times [2023-11-29 01:41:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:43,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733604900] [2023-11-29 01:41:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:43,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:43,631 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:43,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 01:41:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:43,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:41:43,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 01:41:43,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:41:43,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733604900] [2023-11-29 01:41:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733604900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:41:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:41:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:41:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928888585] [2023-11-29 01:41:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:41:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:41:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:41:43,723 INFO L87 Difference]: Start difference. First operand 296 states and 357 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:43,742 INFO L93 Difference]: Finished difference Result 273 states and 321 transitions. [2023-11-29 01:41:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:41:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-11-29 01:41:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:43,744 INFO L225 Difference]: With dead ends: 273 [2023-11-29 01:41:43,744 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 01:41:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:41:43,744 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:41:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 01:41:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-29 01:41:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 245 states have (on average 1.220408163265306) internal successors, (299), 258 states have internal predecessors, (299), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 321 transitions. [2023-11-29 01:41:43,750 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 321 transitions. Word has length 44 [2023-11-29 01:41:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:43,750 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 321 transitions. [2023-11-29 01:41:43,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 321 transitions. [2023-11-29 01:41:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:41:43,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:43,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:43,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 01:41:43,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,951 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:43,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 245676811, now seen corresponding path program 1 times [2023-11-29 01:41:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132128831] [2023-11-29 01:41:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:43,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:43,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:43,952 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:43,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 01:41:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:44,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:41:44,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:41:44,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:41:44,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:44,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132128831] [2023-11-29 01:41:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132128831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:41:44,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:41:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:41:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593524860] [2023-11-29 01:41:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:44,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:41:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:41:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:41:44,289 INFO L87 Difference]: Start difference. First operand 273 states and 321 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:44,407 INFO L93 Difference]: Finished difference Result 279 states and 319 transitions. [2023-11-29 01:41:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:41:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-11-29 01:41:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:44,409 INFO L225 Difference]: With dead ends: 279 [2023-11-29 01:41:44,409 INFO L226 Difference]: Without dead ends: 279 [2023-11-29 01:41:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:41:44,410 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:44,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 112 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:41:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-29 01:41:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 272. [2023-11-29 01:41:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 257 states have internal predecessors, (293), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 315 transitions. [2023-11-29 01:41:44,416 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 315 transitions. Word has length 45 [2023-11-29 01:41:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:44,416 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 315 transitions. [2023-11-29 01:41:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 315 transitions. [2023-11-29 01:41:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:41:44,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:44,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:44,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-29 01:41:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:44,617 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:44,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash -973953377, now seen corresponding path program 1 times [2023-11-29 01:41:44,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:44,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574922502] [2023-11-29 01:41:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:44,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:44,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:44,620 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:44,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 01:41:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:44,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:41:44,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:44,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:41:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:41:44,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:41:44,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:44,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574922502] [2023-11-29 01:41:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574922502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:41:44,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:41:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:41:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525575826] [2023-11-29 01:41:44,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:44,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:41:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:44,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:41:44,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:41:44,802 INFO L87 Difference]: Start difference. First operand 272 states and 315 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:44,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:44,947 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2023-11-29 01:41:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:41:44,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-11-29 01:41:44,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:44,949 INFO L225 Difference]: With dead ends: 287 [2023-11-29 01:41:44,949 INFO L226 Difference]: Without dead ends: 287 [2023-11-29 01:41:44,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:41:44,950 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:44,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 103 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:41:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-29 01:41:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 276. [2023-11-29 01:41:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.1847389558232932) internal successors, (295), 261 states have internal predecessors, (295), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:41:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 317 transitions. [2023-11-29 01:41:44,957 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 317 transitions. Word has length 46 [2023-11-29 01:41:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:44,958 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 317 transitions. [2023-11-29 01:41:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:41:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 317 transitions. [2023-11-29 01:41:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 01:41:44,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:44,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:44,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 01:41:45,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:45,160 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:41:45,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -169332805, now seen corresponding path program 1 times [2023-11-29 01:41:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:41:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459812287] [2023-11-29 01:41:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:45,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:41:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:41:45,162 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:41:45,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 01:41:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:45,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:41:45,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:45,351 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (select |c_#valid| |parse_input_c1_~x~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2023-11-29 01:41:45,440 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 01:41:45,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:41:45,492 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)))) is different from true [2023-11-29 01:41:45,538 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:41:45,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:41:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 7 not checked. [2023-11-29 01:41:45,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:41:46,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:41:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459812287] [2023-11-29 01:41:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459812287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:46,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2023-11-29 01:41:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271643858] [2023-11-29 01:41:46,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:46,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:41:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:41:46,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:41:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=51, Unknown=2, NotChecked=30, Total=110 [2023-11-29 01:41:46,084 INFO L87 Difference]: Start difference. First operand 276 states and 317 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:42:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:22,697 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2023-11-29 01:42:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:42:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-29 01:42:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:22,699 INFO L225 Difference]: With dead ends: 287 [2023-11-29 01:42:22,699 INFO L226 Difference]: Without dead ends: 287 [2023-11-29 01:42:22,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=118, Invalid=256, Unknown=14, NotChecked=74, Total=462 [2023-11-29 01:42:22,700 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 210 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:22,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 165 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 151 Invalid, 0 Unknown, 235 Unchecked, 0.3s Time] [2023-11-29 01:42:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-29 01:42:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 276. [2023-11-29 01:42:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.1726907630522088) internal successors, (292), 261 states have internal predecessors, (292), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:42:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 314 transitions. [2023-11-29 01:42:22,708 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 314 transitions. Word has length 48 [2023-11-29 01:42:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:22,708 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 314 transitions. [2023-11-29 01:42:22,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:42:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 314 transitions. [2023-11-29 01:42:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:42:22,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:22,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:42:22,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 01:42:22,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:22,915 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:42:22,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash -954349610, now seen corresponding path program 1 times [2023-11-29 01:42:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:22,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388934346] [2023-11-29 01:42:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:22,917 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:42:22,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 01:42:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:23,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:42:23,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:23,157 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (select |c_#length| |parse_input_c1_~x~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |parse_input_c1_~x~0#1.base|)))) is different from true [2023-11-29 01:42:23,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:42:23,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:42:23,280 WARN L876 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (_ bv1 32)) |c_#length|)) is different from true [2023-11-29 01:42:23,327 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 01:42:23,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 01:42:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-29 01:42:23,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:24,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:24,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388934346] [2023-11-29 01:42:24,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388934346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:24,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [887670690] [2023-11-29 01:42:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:24,009 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:24,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:42:24,010 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:42:24,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-11-29 01:42:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:24,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:42:24,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:24,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:42:24,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:42:24,497 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 01:42:24,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 01:42:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-29 01:42:24,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [887670690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:25,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-11-29 01:42:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585045829] [2023-11-29 01:42:25,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:42:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:42:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:42:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=139, Unknown=2, NotChecked=50, Total=240 [2023-11-29 01:42:25,020 INFO L87 Difference]: Start difference. First operand 276 states and 314 transitions. Second operand has 11 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:42:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:38,192 INFO L93 Difference]: Finished difference Result 289 states and 318 transitions. [2023-11-29 01:42:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:42:38,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 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 49 [2023-11-29 01:42:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:38,194 INFO L225 Difference]: With dead ends: 289 [2023-11-29 01:42:38,194 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 01:42:38,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=246, Invalid=571, Unknown=3, NotChecked=110, Total=930 [2023-11-29 01:42:38,195 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 231 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 49 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:38,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 177 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 146 Invalid, 6 Unknown, 231 Unchecked, 0.4s Time] [2023-11-29 01:42:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 01:42:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 276. [2023-11-29 01:42:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.1485943775100402) internal successors, (286), 261 states have internal predecessors, (286), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:42:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 308 transitions. [2023-11-29 01:42:38,201 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 308 transitions. Word has length 49 [2023-11-29 01:42:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:38,201 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 308 transitions. [2023-11-29 01:42:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:42:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 308 transitions. [2023-11-29 01:42:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:42:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:38,202 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:42:38,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2023-11-29 01:42:38,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 01:42:38,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:38,603 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:42:38,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -156492906, now seen corresponding path program 1 times [2023-11-29 01:42:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660084341] [2023-11-29 01:42:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:38,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:38,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:38,605 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:42:38,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 01:42:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:38,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:42:38,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 01:42:38,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 01:42:39,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:39,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660084341] [2023-11-29 01:42:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660084341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:42:39,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:39,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 01:42:39,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572083139] [2023-11-29 01:42:39,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:39,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:42:39,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:42:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:42:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:42:39,304 INFO L87 Difference]: Start difference. First operand 276 states and 308 transitions. Second operand has 10 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:42:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:40,010 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2023-11-29 01:42:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:42:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2023-11-29 01:42:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:40,012 INFO L225 Difference]: With dead ends: 282 [2023-11-29 01:42:40,012 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 01:42:40,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:42:40,013 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 198 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:40,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 303 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:42:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 01:42:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2023-11-29 01:42:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 249 states have (on average 1.140562248995984) internal successors, (284), 260 states have internal predecessors, (284), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:42:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 306 transitions. [2023-11-29 01:42:40,018 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 306 transitions. Word has length 53 [2023-11-29 01:42:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:40,018 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 306 transitions. [2023-11-29 01:42:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:42:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 306 transitions. [2023-11-29 01:42:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:42:40,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:40,020 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:42:40,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 01:42:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:40,220 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:42:40,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 139291547, now seen corresponding path program 1 times [2023-11-29 01:42:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089334076] [2023-11-29 01:42:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:40,222 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:42:40,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 01:42:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:40,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:42:40,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:40,553 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 01:42:40,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:42:40,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-29 01:42:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:42:41,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:41,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 01:42:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:42:41,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089334076] [2023-11-29 01:42:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089334076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:42:41,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2023-11-29 01:42:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34312844] [2023-11-29 01:42:41,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:42:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:42:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:42:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:42:41,822 INFO L87 Difference]: Start difference. First operand 275 states and 306 transitions. Second operand has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:42:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:42,283 INFO L93 Difference]: Finished difference Result 280 states and 311 transitions. [2023-11-29 01:42:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:42:42,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2023-11-29 01:42:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:42,285 INFO L225 Difference]: With dead ends: 280 [2023-11-29 01:42:42,285 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 01:42:42,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:42:42,287 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 220 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:42,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 79 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:42:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 01:42:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 274. [2023-11-29 01:42:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 249 states have (on average 1.1365461847389557) internal successors, (283), 259 states have internal predecessors, (283), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:42:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 305 transitions. [2023-11-29 01:42:42,292 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 305 transitions. Word has length 54 [2023-11-29 01:42:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:42,292 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 305 transitions. [2023-11-29 01:42:42,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:42:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 305 transitions. [2023-11-29 01:42:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:42:42,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:42,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2023-11-29 01:42:42,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 01:42:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:42,494 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:42:42,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash 23070642, now seen corresponding path program 1 times [2023-11-29 01:42:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028851151] [2023-11-29 01:42:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:42,496 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:42:42,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 01:42:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:42,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:42:42,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:42,996 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 01:42:42,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:42:43,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-29 01:42:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:42:43,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:44,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028851151] [2023-11-29 01:42:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028851151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1100576896] [2023-11-29 01:42:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:42:44,182 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:42:44,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-11-29 01:42:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:44,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:42:44,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:44,878 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-29 01:42:44,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-29 01:42:45,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2023-11-29 01:42:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:42:45,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1100576896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:45,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:42:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 17 [2023-11-29 01:42:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400532853] [2023-11-29 01:42:45,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:42:45,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:42:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:42:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:42:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:42:45,862 INFO L87 Difference]: Start difference. First operand 274 states and 305 transitions. Second operand has 19 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:42:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:46,959 INFO L93 Difference]: Finished difference Result 301 states and 332 transitions. [2023-11-29 01:42:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:42:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-11-29 01:42:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:46,960 INFO L225 Difference]: With dead ends: 301 [2023-11-29 01:42:46,960 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 01:42:46,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:42:46,961 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:46,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 167 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:42:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 01:42:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 274. [2023-11-29 01:42:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 249 states have (on average 1.1325301204819278) internal successors, (282), 259 states have internal predecessors, (282), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:42:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 304 transitions. [2023-11-29 01:42:46,967 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 304 transitions. Word has length 55 [2023-11-29 01:42:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:46,967 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 304 transitions. [2023-11-29 01:42:46,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:42:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 304 transitions. [2023-11-29 01:42:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:42:46,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:46,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:42:46,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-11-29 01:42:47,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2023-11-29 01:42:47,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:47,369 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:42:47,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 861481531, now seen corresponding path program 1 times [2023-11-29 01:42:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:42:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419959738] [2023-11-29 01:42:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:42:47,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:42:47,370 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:42:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 01:42:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:47,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:42:47,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:42:47,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:42:48,374 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 01:42:48,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 01:42:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:42:49,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:49,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:42:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419959738] [2023-11-29 01:42:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419959738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991327687] [2023-11-29 01:42:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:49,591 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:42:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:42:49,592 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:42:49,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-11-29 01:42:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:50,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:42:50,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:50,591 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 01:42:50,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:42:50,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:42:51,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:42:51,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:42:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:42:51,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:43:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991327687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:43:00,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:43:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2023-11-29 01:43:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096052082] [2023-11-29 01:43:00,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:43:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:43:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:43:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:43:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=387, Unknown=5, NotChecked=0, Total=462 [2023-11-29 01:43:00,424 INFO L87 Difference]: Start difference. First operand 274 states and 304 transitions. Second operand has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:43:04,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:18,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:22,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:38,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:42,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:46,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:50,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:54,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:58,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:02,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:06,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:10,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:14,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:18,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:22,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:34,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:38,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:42,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:46,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:50,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:54,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:07,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:11,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:15,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:19,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:23,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:27,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:31,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:35,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:39,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:43,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:47,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:51,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:55,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:59,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:03,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:07,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:11,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:15,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:23,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:27,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:31,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:35,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:47,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:51,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:55,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:59,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:03,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:07,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:11,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:16,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:24,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:28,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:32,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:33,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:47,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:51,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:04,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:08,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:12,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:16,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:28,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:32,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:36,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:40,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:44,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:48,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:52,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:48:56,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:08,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:12,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:16,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:20,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:21,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:51,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:55,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:49:59,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:07,894 INFO L93 Difference]: Finished difference Result 309 states and 337 transitions. [2023-11-29 01:50:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:50:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2023-11-29 01:50:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:07,896 INFO L225 Difference]: With dead ends: 309 [2023-11-29 01:50:07,897 INFO L226 Difference]: Without dead ends: 309 [2023-11-29 01:50:07,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 124.5s TimeCoverageRelationStatistics Valid=398, Invalid=1372, Unknown=36, NotChecked=0, Total=1806 [2023-11-29 01:50:07,898 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 314 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 49 mSolverCounterUnsat, 111 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 312.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 111 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:07,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 295 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 494 Invalid, 111 Unknown, 0 Unchecked, 312.8s Time] [2023-11-29 01:50:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-29 01:50:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 273. [2023-11-29 01:50:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 249 states have (on average 1.1285140562248996) internal successors, (281), 258 states have internal predecessors, (281), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:50:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 303 transitions. [2023-11-29 01:50:07,905 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 303 transitions. Word has length 55 [2023-11-29 01:50:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:07,905 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 303 transitions. [2023-11-29 01:50:07,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:50:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 303 transitions. [2023-11-29 01:50:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:50:07,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:07,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2023-11-29 01:50:07,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-11-29 01:50:08,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2023-11-29 01:50:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:50:08,307 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:50:08,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash 696051924, now seen corresponding path program 1 times [2023-11-29 01:50:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:50:08,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997749348] [2023-11-29 01:50:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:08,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:08,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:50:08,309 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:50:08,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-11-29 01:50:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:08,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:50:08,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:08,869 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 01:50:08,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:50:09,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-29 01:50:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:50:09,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:50:11,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:50:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997749348] [2023-11-29 01:50:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997749348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:11,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:50:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:50:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928053137] [2023-11-29 01:50:11,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:11,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:50:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:50:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:50:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:50:11,901 INFO L87 Difference]: Start difference. First operand 273 states and 303 transitions. Second operand has 18 states, 15 states have (on average 6.066666666666666) internal successors, (91), 14 states have internal predecessors, (91), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:50:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:13,968 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2023-11-29 01:50:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:50:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.066666666666666) internal successors, (91), 14 states have internal predecessors, (91), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2023-11-29 01:50:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:13,969 INFO L225 Difference]: With dead ends: 278 [2023-11-29 01:50:13,969 INFO L226 Difference]: Without dead ends: 278 [2023-11-29 01:50:13,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:50:13,970 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 233 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:13,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 187 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:50:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-29 01:50:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2023-11-29 01:50:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 257 states have internal predecessors, (280), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:50:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 302 transitions. [2023-11-29 01:50:13,978 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 302 transitions. Word has length 57 [2023-11-29 01:50:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:13,978 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 302 transitions. [2023-11-29 01:50:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.066666666666666) internal successors, (91), 14 states have internal predecessors, (91), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:50:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 302 transitions. [2023-11-29 01:50:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:50:13,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:13,980 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2023-11-29 01:50:13,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-11-29 01:50:14,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:14,180 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:50:14,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash -355197301, now seen corresponding path program 2 times [2023-11-29 01:50:14,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:50:14,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173723153] [2023-11-29 01:50:14,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:50:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:14,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:50:14,182 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:50:14,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 01:50:14,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:50:14,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:50:14,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:50:14,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:15,093 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:50:15,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:50:17,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-29 01:50:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:17,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:18,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-11-29 01:50:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 5 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:21,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:50:21,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173723153] [2023-11-29 01:50:21,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173723153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:21,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:50:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2023-11-29 01:50:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911007481] [2023-11-29 01:50:21,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:21,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 01:50:21,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:50:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 01:50:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:50:21,846 INFO L87 Difference]: Start difference. First operand 272 states and 302 transitions. Second operand has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 25 states have internal predecessors, (116), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:50:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:25,401 INFO L93 Difference]: Finished difference Result 298 states and 329 transitions. [2023-11-29 01:50:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:50:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 25 states have internal predecessors, (116), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2023-11-29 01:50:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:25,403 INFO L225 Difference]: With dead ends: 298 [2023-11-29 01:50:25,403 INFO L226 Difference]: Without dead ends: 298 [2023-11-29 01:50:25,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=384, Invalid=1508, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:50:25,404 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 278 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:25,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 230 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:50:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-29 01:50:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 271. [2023-11-29 01:50:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 249 states have (on average 1.1204819277108433) internal successors, (279), 256 states have internal predecessors, (279), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 01:50:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 301 transitions. [2023-11-29 01:50:25,410 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 301 transitions. Word has length 63 [2023-11-29 01:50:25,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:25,410 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 301 transitions. [2023-11-29 01:50:25,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.296296296296297) internal successors, (116), 25 states have internal predecessors, (116), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:50:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 301 transitions. [2023-11-29 01:50:25,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:50:25,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:25,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:25,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-11-29 01:50:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:25,612 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 01:50:25,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1323634330, now seen corresponding path program 1 times [2023-11-29 01:50:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:50:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307935559] [2023-11-29 01:50:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:25,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:25,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:50:25,614 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:50:25,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-11-29 01:50:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:50:25,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:50:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:50:26,035 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 01:50:26,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:50:26,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-29 01:50:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-29 01:50:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-29 01:50:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-29 01:50:26,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-29 01:50:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-29 01:50:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-29 01:50:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-29 01:50:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-29 01:50:26,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-29 01:50:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-29 01:50:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2023-11-29 01:50:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2023-11-29 01:50:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2023-11-29 01:50:26,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2023-11-29 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2023-11-29 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2023-11-29 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-29 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-29 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-29 01:50:26,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-11-29 01:50:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:50:26,243 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-11-29 01:50:26,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:50:26,285 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,285 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,287 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:50:26,291 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,292 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,292 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,294 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:50:26,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-29 01:50:26,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-29 01:50:26,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:50:26 BoogieIcfgContainer [2023-11-29 01:50:26,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:50:26,309 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:50:26,309 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:50:26,309 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:50:26,310 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:40:17" (3/4) ... [2023-11-29 01:50:26,311 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:50:26,312 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:50:26,312 INFO L158 Benchmark]: Toolchain (without parser) took 609752.20ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 55.8MB in the beginning and 82.7MB in the end (delta: -27.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,312 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 31.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:50:26,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.43ms. Allocated memory is still 79.7MB. Free memory was 55.6MB in the beginning and 52.8MB in the end (delta: 2.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.32ms. Allocated memory is still 79.7MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,313 INFO L158 Benchmark]: Boogie Preprocessor took 55.80ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 47.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,313 INFO L158 Benchmark]: RCFGBuilder took 515.38ms. Allocated memory is still 79.7MB. Free memory was 47.7MB in the beginning and 47.3MB in the end (delta: 427.7kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,313 INFO L158 Benchmark]: TraceAbstraction took 608562.14ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 46.5MB in the beginning and 82.7MB in the end (delta: -36.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-29 01:50:26,313 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 117.4MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:50:26,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 31.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.43ms. Allocated memory is still 79.7MB. Free memory was 55.6MB in the beginning and 52.8MB in the end (delta: 2.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.32ms. Allocated memory is still 79.7MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.80ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 47.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 515.38ms. Allocated memory is still 79.7MB. Free memory was 47.7MB in the beginning and 47.3MB in the end (delta: 427.7kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 608562.14ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 46.5MB in the beginning and 82.7MB in the end (delta: -36.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 117.4MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 721. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L722] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={23:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={23:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={23:0}, state=1, x={23:0}] [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={23:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, state=1] [L692] int i = 0; VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, i=0, input={4:0}, input={4:0}, state=1] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, state=1, x={26:0}] [L706] COND TRUE \read(*global) VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={23:0}, state=1, x={26:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={23:0}, \old(state)=1, commands={6:0}, global={26:0}, state=1, x={26:0}] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={26:0}, state=1] [L724] CALL parse_input("c2") VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, state=1] [L692] int i = 0; VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, i=0, input={5:0}, input={5:0}, state=1] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, state=1, x={7:0}] [L706] COND TRUE \read(*global) VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={26:0}, state=1, x={7:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(global)={26:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1, x={7:0}] [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={7:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={7:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 608.4s, OverallIterations: 35, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 536.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 mSolverCounterUnknown, 6191 SdHoareTripleChecker+Valid, 365.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6187 mSDsluCounter, 6790 SdHoareTripleChecker+Invalid, 363.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 874 IncrementalHoareTripleChecker+Unchecked, 4828 mSDsCounter, 635 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5021 IncrementalHoareTripleChecker+Invalid, 6657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 635 mSolverCounterUnsat, 1962 mSDtfsCounter, 5021 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2051 GetRequests, 1582 SyntacticMatches, 24 SemanticMatches, 445 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 205.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=539occurred in iteration=20, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 34 MinimizatonAttempts, 1934 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 58.1s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1368 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1694 ConstructedInterpolants, 235 QuantifiedInterpolants, 23381 SizeOfPredicates, 158 NumberOfNonLiveVariables, 5748 ConjunctsInSsa, 488 ConjunctsInUnsatCore, 53 InterpolantComputations, 15 PerfectInterpolantSequences, 468/1082 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 01:50:26,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f1828e-e84e-4de0-869f-b113c1cf9177/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample