./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:14:25,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:14:25,254 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 07:14:25,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:14:25,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:14:25,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:14:25,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:14:25,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:14:25,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:14:25,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:14:25,302 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:14:25,303 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:14:25,304 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:14:25,309 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:14:25,309 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:14:25,310 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:14:25,310 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:14:25,310 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:14:25,311 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:14:25,311 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:14:25,311 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:14:25,312 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:14:25,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:14:25,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:14:25,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:14:25,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:14:25,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:14:25,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:14:25,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:14:25,315 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:14:25,316 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:14:25,316 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:14:25,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:14:25,317 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:14:25,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:14:25,317 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:14:25,318 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:14:25,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:14:25,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:14:25,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:14:25,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:14:25,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:14:25,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:14:25,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:14:25,321 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:14:25,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:14:25,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:14:25,322 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:14:25,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:14:25,322 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2024-11-09 07:14:25,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:14:25,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:14:25,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:14:25,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:14:25,670 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:14:25,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i Unable to find full path for "g++" [2024-11-09 07:14:27,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:14:27,990 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:14:27,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2024-11-09 07:14:28,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/60c652e80/016d30aa0f15447b99fdf5854d94c7fb/FLAG4ee5e6e64 [2024-11-09 07:14:28,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/60c652e80/016d30aa0f15447b99fdf5854d94c7fb [2024-11-09 07:14:28,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:14:28,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:14:28,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:14:28,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:14:28,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:14:28,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a6a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28, skipping insertion in model container [2024-11-09 07:14:28,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:14:28,600 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:14:28,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:14:28,620 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:14:28,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:14:28,734 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:14:28,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28 WrapperNode [2024-11-09 07:14:28,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:14:28,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:14:28,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:14:28,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:14:28,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,793 INFO L138 Inliner]: procedures = 168, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 98 [2024-11-09 07:14:28,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:14:28,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:14:28,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:14:28,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:14:28,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:14:28,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:14:28,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:14:28,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:14:28,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (1/1) ... [2024-11-09 07:14:28,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:14:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:28,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:14:28,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:14:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:14:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-09 07:14:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-09 07:14:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:14:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:14:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:14:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:14:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:14:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:14:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:14:28,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:14:29,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:14:29,151 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:14:29,548 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-09 07:14:29,548 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:14:29,594 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:14:29,594 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:14:29,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:14:29 BoogieIcfgContainer [2024-11-09 07:14:29,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:14:29,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:14:29,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:14:29,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:14:29,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:14:28" (1/3) ... [2024-11-09 07:14:29,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5474f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:14:29, skipping insertion in model container [2024-11-09 07:14:29,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:14:28" (2/3) ... [2024-11-09 07:14:29,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5474f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:14:29, skipping insertion in model container [2024-11-09 07:14:29,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:14:29" (3/3) ... [2024-11-09 07:14:29,614 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2024-11-09 07:14:29,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:14:29,638 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-11-09 07:14:29,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:14:29,695 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@6939c6c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:14:29,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-09 07:14:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 61 states have internal predecessors, (69), 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) [2024-11-09 07:14:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:14:29,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:29,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:14:29,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:29,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash -15366848, now seen corresponding path program 1 times [2024-11-09 07:14:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:29,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001405628] [2024-11-09 07:14:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:30,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001405628] [2024-11-09 07:14:30,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001405628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:30,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:30,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:14:30,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142918019] [2024-11-09 07:14:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:30,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:14:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:14:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:14:30,236 INFO L87 Difference]: Start difference. First operand has 66 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 61 states have internal predecessors, (69), 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 2.5) internal successors, (5), 3 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) [2024-11-09 07:14:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:30,477 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2024-11-09 07:14:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:14:30,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-11-09 07:14:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:30,498 INFO L225 Difference]: With dead ends: 134 [2024-11-09 07:14:30,498 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 07:14:30,501 INFO L431 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 [2024-11-09 07:14:30,507 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 162 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:30,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 116 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:14:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 07:14:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2024-11-09 07:14:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.661764705882353) internal successors, (113), 88 states have internal predecessors, (113), 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) [2024-11-09 07:14:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2024-11-09 07:14:30,584 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 6 [2024-11-09 07:14:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:30,590 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2024-11-09 07:14:30,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-09 07:14:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2024-11-09 07:14:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:14:30,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:30,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:14:30,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:14:30,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:30,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -15366847, now seen corresponding path program 1 times [2024-11-09 07:14:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574198755] [2024-11-09 07:14:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:30,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574198755] [2024-11-09 07:14:30,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574198755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:30,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:30,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083287482] [2024-11-09 07:14:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:30,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:30,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:14:30,987 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-09 07:14:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:31,211 INFO L93 Difference]: Finished difference Result 203 states and 280 transitions. [2024-11-09 07:14:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:14:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2024-11-09 07:14:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:31,215 INFO L225 Difference]: With dead ends: 203 [2024-11-09 07:14:31,215 INFO L226 Difference]: Without dead ends: 203 [2024-11-09 07:14:31,216 INFO L431 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 [2024-11-09 07:14:31,217 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 158 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:31,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 151 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:14:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-09 07:14:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 177. [2024-11-09 07:14:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 139 states have (on average 1.6618705035971224) internal successors, (231), 159 states have internal predecessors, (231), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2024-11-09 07:14:31,246 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 6 [2024-11-09 07:14:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:31,247 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2024-11-09 07:14:31,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-09 07:14:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2024-11-09 07:14:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:14:31,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:31,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:31,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:14:31,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:31,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash -476372306, now seen corresponding path program 1 times [2024-11-09 07:14:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844032160] [2024-11-09 07:14:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:31,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844032160] [2024-11-09 07:14:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844032160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109195290] [2024-11-09 07:14:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:31,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:14:31,668 INFO L87 Difference]: Start difference. First operand 177 states and 276 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) [2024-11-09 07:14:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:31,951 INFO L93 Difference]: Finished difference Result 229 states and 332 transitions. [2024-11-09 07:14:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:14:31,952 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 [2024-11-09 07:14:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:31,957 INFO L225 Difference]: With dead ends: 229 [2024-11-09 07:14:31,959 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 07:14:31,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:14:31,960 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 89 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:31,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 183 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:14:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 07:14:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2024-11-09 07:14:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 143 states have (on average 1.6433566433566433) internal successors, (235), 163 states have internal predecessors, (235), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2024-11-09 07:14:31,985 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 7 [2024-11-09 07:14:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:31,985 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2024-11-09 07:14:31,986 INFO L472 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) [2024-11-09 07:14:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2024-11-09 07:14:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:14:31,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:31,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:31,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:14:31,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:31,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:31,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1882639552, now seen corresponding path program 1 times [2024-11-09 07:14:31,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869066727] [2024-11-09 07:14:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:32,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:32,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869066727] [2024-11-09 07:14:32,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869066727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:32,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:32,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578899962] [2024-11-09 07:14:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:32,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:14:32,396 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2024-11-09 07:14:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:32,607 INFO L93 Difference]: Finished difference Result 206 states and 282 transitions. [2024-11-09 07:14:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:14:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2024-11-09 07:14:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:32,610 INFO L225 Difference]: With dead ends: 206 [2024-11-09 07:14:32,610 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 07:14:32,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:14:32,615 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:32,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 216 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:14:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 07:14:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 181. [2024-11-09 07:14:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 143 states have (on average 1.6293706293706294) internal successors, (233), 163 states have internal predecessors, (233), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2024-11-09 07:14:32,653 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 8 [2024-11-09 07:14:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:32,654 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2024-11-09 07:14:32,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2024-11-09 07:14:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2024-11-09 07:14:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:14:32,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:32,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:32,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:14:32,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:32,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1767716080, now seen corresponding path program 1 times [2024-11-09 07:14:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95266191] [2024-11-09 07:14:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:32,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95266191] [2024-11-09 07:14:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95266191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:32,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:32,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:32,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292243025] [2024-11-09 07:14:32,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:32,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:14:32,764 INFO L87 Difference]: Start difference. First operand 181 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) [2024-11-09 07:14:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:32,922 INFO L93 Difference]: Finished difference Result 277 states and 383 transitions. [2024-11-09 07:14:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:14:32,923 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 [2024-11-09 07:14:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:32,926 INFO L225 Difference]: With dead ends: 277 [2024-11-09 07:14:32,927 INFO L226 Difference]: Without dead ends: 277 [2024-11-09 07:14:32,927 INFO L431 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 [2024-11-09 07:14:32,930 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 150 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:32,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 203 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:14:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-09 07:14:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 216. [2024-11-09 07:14:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 176 states have (on average 1.6022727272727273) internal successors, (282), 197 states have internal predecessors, (282), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 327 transitions. [2024-11-09 07:14:32,991 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 327 transitions. Word has length 9 [2024-11-09 07:14:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:32,991 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 327 transitions. [2024-11-09 07:14:32,991 INFO L472 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) [2024-11-09 07:14:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 327 transitions. [2024-11-09 07:14:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 07:14:32,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:32,992 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:32,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:14:32,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:32,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1035376318, now seen corresponding path program 1 times [2024-11-09 07:14:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127003028] [2024-11-09 07:14:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:32,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:33,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127003028] [2024-11-09 07:14:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127003028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264412113] [2024-11-09 07:14:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:33,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:33,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:14:33,146 INFO L87 Difference]: Start difference. First operand 216 states and 327 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 07:14:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:33,290 INFO L93 Difference]: Finished difference Result 264 states and 350 transitions. [2024-11-09 07:14:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:14:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-09 07:14:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:33,294 INFO L225 Difference]: With dead ends: 264 [2024-11-09 07:14:33,294 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 07:14:33,294 INFO L431 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 [2024-11-09 07:14:33,299 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 143 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:33,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 242 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:14:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 07:14:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 230. [2024-11-09 07:14:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 189 states have (on average 1.6031746031746033) internal successors, (303), 211 states have internal predecessors, (303), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 348 transitions. [2024-11-09 07:14:33,326 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 348 transitions. Word has length 10 [2024-11-09 07:14:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:33,327 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 348 transitions. [2024-11-09 07:14:33,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 07:14:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 348 transitions. [2024-11-09 07:14:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:14:33,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:33,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:33,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:14:33,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:33,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -409697694, now seen corresponding path program 1 times [2024-11-09 07:14:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:33,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989902186] [2024-11-09 07:14:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:33,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989902186] [2024-11-09 07:14:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989902186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:33,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971427798] [2024-11-09 07:14:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:33,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:33,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:14:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:33,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:14:33,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:33,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971427798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:14:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [608301218] [2024-11-09 07:14:34,178 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 07:14:34,178 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:34,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:34,189 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:34,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:34,466 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 135 for LOIs [2024-11-09 07:14:39,675 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [608301218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:45,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:14:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 3, 3] total 16 [2024-11-09 07:14:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068153562] [2024-11-09 07:14:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:45,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:14:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:45,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:14:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:14:45,454 INFO L87 Difference]: Start difference. First operand 230 states and 348 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-09 07:14:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:45,941 INFO L93 Difference]: Finished difference Result 224 states and 326 transitions. [2024-11-09 07:14:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:14:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2024-11-09 07:14:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:45,943 INFO L225 Difference]: With dead ends: 224 [2024-11-09 07:14:45,943 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 07:14:45,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:14:45,944 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:45,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 91 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:14:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 07:14:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2024-11-09 07:14:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 173 states have (on average 1.5549132947976878) internal successors, (269), 195 states have internal predecessors, (269), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 07:14:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 314 transitions. [2024-11-09 07:14:45,956 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 314 transitions. Word has length 15 [2024-11-09 07:14:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:45,957 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 314 transitions. [2024-11-09 07:14:45,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-09 07:14:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 314 transitions. [2024-11-09 07:14:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:14:45,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:45,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:45,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:14:46,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 07:14:46,158 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:46,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash -882198177, now seen corresponding path program 1 times [2024-11-09 07:14:46,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:46,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880301235] [2024-11-09 07:14:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:46,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:46,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:46,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880301235] [2024-11-09 07:14:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880301235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:14:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256132565] [2024-11-09 07:14:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:46,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:14:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:14:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:14:46,286 INFO L87 Difference]: Start difference. First operand 214 states and 314 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-11-09 07:14:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:46,334 INFO L93 Difference]: Finished difference Result 286 states and 404 transitions. [2024-11-09 07:14:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:14:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 18 [2024-11-09 07:14:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:46,339 INFO L225 Difference]: With dead ends: 286 [2024-11-09 07:14:46,339 INFO L226 Difference]: Without dead ends: 286 [2024-11-09 07:14:46,339 INFO L431 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 [2024-11-09 07:14:46,342 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:46,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 111 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:14:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-09 07:14:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 274. [2024-11-09 07:14:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 226 states have (on average 1.5221238938053097) internal successors, (344), 249 states have internal predecessors, (344), 14 states have call successors, (14), 10 states have call predecessors, (14), 13 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) [2024-11-09 07:14:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 402 transitions. [2024-11-09 07:14:46,356 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 402 transitions. Word has length 18 [2024-11-09 07:14:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:46,356 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 402 transitions. [2024-11-09 07:14:46,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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) [2024-11-09 07:14:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 402 transitions. [2024-11-09 07:14:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:14:46,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:46,358 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:46,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:14:46,358 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:46,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -748275600, now seen corresponding path program 1 times [2024-11-09 07:14:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400947754] [2024-11-09 07:14:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:46,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:46,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400947754] [2024-11-09 07:14:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400947754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82038372] [2024-11-09 07:14:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:46,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:46,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:14:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:46,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:14:46,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:46,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:46,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82038372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:14:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095946005] [2024-11-09 07:14:46,547 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-09 07:14:46,548 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:46,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:46,548 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:46,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:47,508 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 17 for LOIs [2024-11-09 07:14:47,894 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:50,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3754#(and (<= 4 (select |#length| 6)) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| |parse_input_#in~input#1.base|) 1)) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (<= |parse_input_#in~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))' at error location [2024-11-09 07:14:50,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:14:50,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:14:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-09 07:14:50,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936459674] [2024-11-09 07:14:50,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:14:50,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:14:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:50,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:14:50,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:14:50,093 INFO L87 Difference]: Start difference. First operand 274 states and 402 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 07:14:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:50,145 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2024-11-09 07:14:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:14:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 24 [2024-11-09 07:14:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:50,147 INFO L225 Difference]: With dead ends: 336 [2024-11-09 07:14:50,150 INFO L226 Difference]: Without dead ends: 336 [2024-11-09 07:14:50,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:14:50,152 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 25 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:50,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 220 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:14:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-09 07:14:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 327. [2024-11-09 07:14:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 279 states have (on average 1.4946236559139785) internal successors, (417), 302 states have internal predecessors, (417), 14 states have call successors, (14), 10 states have call predecessors, (14), 13 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) [2024-11-09 07:14:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 475 transitions. [2024-11-09 07:14:50,174 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 475 transitions. Word has length 24 [2024-11-09 07:14:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:50,175 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 475 transitions. [2024-11-09 07:14:50,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 07:14:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 475 transitions. [2024-11-09 07:14:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:14:50,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:50,178 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:50,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:14:50,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 07:14:50,379 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:50,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash -22400663, now seen corresponding path program 1 times [2024-11-09 07:14:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714839171] [2024-11-09 07:14:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:50,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714839171] [2024-11-09 07:14:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714839171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786566790] [2024-11-09 07:14:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:50,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:14:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:14:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:14:50,418 INFO L87 Difference]: Start difference. First operand 327 states and 475 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2024-11-09 07:14:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:50,436 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2024-11-09 07:14:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:14:50,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 [2024-11-09 07:14:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:50,438 INFO L225 Difference]: With dead ends: 245 [2024-11-09 07:14:50,438 INFO L226 Difference]: Without dead ends: 245 [2024-11-09 07:14:50,438 INFO L431 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 [2024-11-09 07:14:50,439 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:50,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:14:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-09 07:14:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-09 07:14:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 205 states have (on average 1.4536585365853658) internal successors, (298), 227 states have internal predecessors, (298), 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) [2024-11-09 07:14:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2024-11-09 07:14:50,452 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 25 [2024-11-09 07:14:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:50,452 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2024-11-09 07:14:50,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2024-11-09 07:14:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2024-11-09 07:14:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:14:50,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:50,455 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:50,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:14:50,456 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:14:50,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -238379131, now seen corresponding path program 1 times [2024-11-09 07:14:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153289111] [2024-11-09 07:14:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:50,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153289111] [2024-11-09 07:14:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153289111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573880121] [2024-11-09 07:14:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:50,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:50,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:50,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:14:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:50,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:14:50,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:51,123 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 [2024-11-09 07:14:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:51,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573880121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585391786] [2024-11-09 07:14:51,382 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 07:14:51,383 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:51,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:51,383 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:51,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:52,011 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:14:54,376 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:08,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5035#(and (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (select |#length| 6) 3) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:15:08,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:08,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:15:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2024-11-09 07:15:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896267511] [2024-11-09 07:15:08,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:08,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:15:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:15:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=851, Unknown=2, NotChecked=0, Total=1056 [2024-11-09 07:15:08,208 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand has 14 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2024-11-09 07:15:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:08,779 INFO L93 Difference]: Finished difference Result 262 states and 346 transitions. [2024-11-09 07:15:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:15:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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 27 [2024-11-09 07:15:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:08,783 INFO L225 Difference]: With dead ends: 262 [2024-11-09 07:15:08,783 INFO L226 Difference]: Without dead ends: 262 [2024-11-09 07:15:08,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=334, Invalid=1470, Unknown=2, NotChecked=0, Total=1806 [2024-11-09 07:15:08,784 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 315 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:08,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 203 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:15:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-09 07:15:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 251. [2024-11-09 07:15:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 209 states have (on average 1.4210526315789473) internal successors, (297), 233 states have internal predecessors, (297), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:15:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 337 transitions. [2024-11-09 07:15:08,798 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 337 transitions. Word has length 27 [2024-11-09 07:15:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:08,799 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 337 transitions. [2024-11-09 07:15:08,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2024-11-09 07:15:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 337 transitions. [2024-11-09 07:15:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:15:08,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:08,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:08,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:15:09,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 07:15:09,005 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:15:09,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1170132097, now seen corresponding path program 1 times [2024-11-09 07:15:09,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:09,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101485962] [2024-11-09 07:15:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:09,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:09,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101485962] [2024-11-09 07:15:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101485962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750442738] [2024-11-09 07:15:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:09,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:09,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:09,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:09,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:15:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:09,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:15:09,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:09,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:15:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750442738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:09,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:15:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-09 07:15:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605154499] [2024-11-09 07:15:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:09,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:15:09,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:15:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:15:09,365 INFO L87 Difference]: Start difference. First operand 251 states and 337 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-09 07:15:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:09,435 INFO L93 Difference]: Finished difference Result 261 states and 343 transitions. [2024-11-09 07:15:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:15:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 28 [2024-11-09 07:15:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:09,437 INFO L225 Difference]: With dead ends: 261 [2024-11-09 07:15:09,437 INFO L226 Difference]: Without dead ends: 261 [2024-11-09 07:15:09,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:15:09,438 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 81 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:09,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 159 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:15:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-09 07:15:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2024-11-09 07:15:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 215 states have (on average 1.4093023255813955) internal successors, (303), 239 states have internal predecessors, (303), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:15:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 343 transitions. [2024-11-09 07:15:09,448 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 343 transitions. Word has length 28 [2024-11-09 07:15:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:09,448 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 343 transitions. [2024-11-09 07:15:09,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-09 07:15:09,448 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 343 transitions. [2024-11-09 07:15:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:15:09,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:09,449 INFO L215 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, 1] [2024-11-09 07:15:09,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:15:09,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 07:15:09,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:15:09,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1449079676, now seen corresponding path program 1 times [2024-11-09 07:15:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689115674] [2024-11-09 07:15:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:10,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689115674] [2024-11-09 07:15:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689115674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422099035] [2024-11-09 07:15:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:10,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:10,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:10,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:15:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:10,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:15:10,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:10,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:15:10,615 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 [2024-11-09 07:15:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:10,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:10,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422099035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:10,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1834207749] [2024-11-09 07:15:10,948 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 07:15:10,948 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:10,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:10,948 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:10,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:11,383 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:15:13,031 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:27,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6321#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (or (< (select |#length| (select (select |#memory_$Pointer$.base| 6) 0)) (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1)) (< (select (select |#memory_$Pointer$.offset| 6) 0) 0)) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:15:27,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:27,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:15:27,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2024-11-09 07:15:27,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354751330] [2024-11-09 07:15:27,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:27,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:15:27,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:27,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:15:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 07:15:27,346 INFO L87 Difference]: Start difference. First operand 257 states and 343 transitions. Second operand has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 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) [2024-11-09 07:15:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:27,990 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2024-11-09 07:15:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:15:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 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 [2024-11-09 07:15:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:27,993 INFO L225 Difference]: With dead ends: 268 [2024-11-09 07:15:27,993 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 07:15:27,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=342, Invalid=1638, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 07:15:27,994 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 454 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:27,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 269 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 07:15:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 259. [2024-11-09 07:15:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 217 states have (on average 1.3963133640552996) internal successors, (303), 241 states have internal predecessors, (303), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:15:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2024-11-09 07:15:28,004 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 29 [2024-11-09 07:15:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:28,005 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2024-11-09 07:15:28,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 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) [2024-11-09 07:15:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2024-11-09 07:15:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 07:15:28,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:28,006 INFO L215 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, 1] [2024-11-09 07:15:28,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 07:15:28,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 07:15:28,211 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:15:28,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1971796948, now seen corresponding path program 1 times [2024-11-09 07:15:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:28,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532241433] [2024-11-09 07:15:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:28,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532241433] [2024-11-09 07:15:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532241433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136437612] [2024-11-09 07:15:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:28,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:28,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:28,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:15:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:28,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:15:28,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:28,601 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:15:28,602 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 [2024-11-09 07:15:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:28,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:28,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136437612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [139985090] [2024-11-09 07:15:28,734 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 07:15:28,735 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:28,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:28,735 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:28,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:29,144 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:15:30,726 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:43,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7008#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (not (= (select |#valid| 4) 1)) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:15:43,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:43,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:15:43,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-11-09 07:15:43,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990133591] [2024-11-09 07:15:43,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:43,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:15:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:15:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2024-11-09 07:15:43,655 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 12 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-11-09 07:15:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:44,128 INFO L93 Difference]: Finished difference Result 393 states and 486 transitions. [2024-11-09 07:15:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:15:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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 30 [2024-11-09 07:15:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:44,130 INFO L225 Difference]: With dead ends: 393 [2024-11-09 07:15:44,130 INFO L226 Difference]: Without dead ends: 393 [2024-11-09 07:15:44,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=298, Invalid=1108, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 07:15:44,131 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 514 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:44,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 356 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:15:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-09 07:15:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 330. [2024-11-09 07:15:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 285 states have (on average 1.3824561403508773) internal successors, (394), 310 states have internal predecessors, (394), 10 states have call successors, (10), 9 states have call predecessors, (10), 14 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-09 07:15:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 434 transitions. [2024-11-09 07:15:44,142 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 434 transitions. Word has length 30 [2024-11-09 07:15:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:44,142 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 434 transitions. [2024-11-09 07:15:44,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-11-09 07:15:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 434 transitions. [2024-11-09 07:15:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 07:15:44,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:44,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:44,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:15:44,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 07:15:44,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:15:44,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -996163194, now seen corresponding path program 1 times [2024-11-09 07:15:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932425237] [2024-11-09 07:15:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:44,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:44,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932425237] [2024-11-09 07:15:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932425237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280138494] [2024-11-09 07:15:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:44,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:44,598 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:44,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:15:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:44,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:15:44,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:15:44,821 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 [2024-11-09 07:15:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:44,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:45,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280138494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020952857] [2024-11-09 07:15:45,065 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 07:15:45,065 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:45,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:45,066 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:45,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:45,540 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:15:47,028 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:59,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7904#(and (<= 4 (select |#length| 6)) (= ~global~0.base |old(~global~0.base)|) (= |old(#length)| |#length|) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (select |#length| 4) 0) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= (select |#valid| 4) 1) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_#in~input#1.offset| 0) (= |old(#valid)| |#valid|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:15:59,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:59,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:15:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-11-09 07:15:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992045059] [2024-11-09 07:15:59,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:59,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 07:15:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 07:15:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=986, Unknown=4, NotChecked=0, Total=1190 [2024-11-09 07:15:59,951 INFO L87 Difference]: Start difference. First operand 330 states and 434 transitions. Second operand has 15 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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) [2024-11-09 07:16:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:00,856 INFO L93 Difference]: Finished difference Result 523 states and 647 transitions. [2024-11-09 07:16:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 07:16:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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 31 [2024-11-09 07:16:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:00,858 INFO L225 Difference]: With dead ends: 523 [2024-11-09 07:16:00,858 INFO L226 Difference]: Without dead ends: 523 [2024-11-09 07:16:00,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=452, Invalid=2196, Unknown=4, NotChecked=0, Total=2652 [2024-11-09 07:16:00,861 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 756 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:00,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 361 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:16:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-09 07:16:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 390. [2024-11-09 07:16:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 343 states have (on average 1.3965014577259476) internal successors, (479), 373 states have internal predecessors, (479), 8 states have call successors, (8), 8 states have call predecessors, (8), 18 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-09 07:16:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 511 transitions. [2024-11-09 07:16:00,877 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 511 transitions. Word has length 31 [2024-11-09 07:16:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:00,877 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 511 transitions. [2024-11-09 07:16:00,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 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) [2024-11-09 07:16:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 511 transitions. [2024-11-09 07:16:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 07:16:00,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:00,878 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:16:00,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:16:01,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:16:01,080 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:01,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:01,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1988184930, now seen corresponding path program 1 times [2024-11-09 07:16:01,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30894347] [2024-11-09 07:16:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:01,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30894347] [2024-11-09 07:16:01,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30894347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995702887] [2024-11-09 07:16:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:01,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:01,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:16:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:01,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:16:01,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:01,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:16:01,896 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 [2024-11-09 07:16:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:02,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995702887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:02,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470188494] [2024-11-09 07:16:02,378 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:16:02,379 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:02,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:02,379 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:02,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:03,503 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 40 for LOIs [2024-11-09 07:16:03,775 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:07,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9038#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= (select |#length| 6) 12) (<= ~state~0 1) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:16:07,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:07,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:07,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2024-11-09 07:16:07,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496786840] [2024-11-09 07:16:07,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:07,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 07:16:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 07:16:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 07:16:07,458 INFO L87 Difference]: Start difference. First operand 390 states and 511 transitions. Second operand has 17 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2024-11-09 07:16:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:08,311 INFO L93 Difference]: Finished difference Result 399 states and 499 transitions. [2024-11-09 07:16:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:16:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 36 [2024-11-09 07:16:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:08,314 INFO L225 Difference]: With dead ends: 399 [2024-11-09 07:16:08,314 INFO L226 Difference]: Without dead ends: 399 [2024-11-09 07:16:08,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=293, Invalid=2059, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 07:16:08,316 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 394 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:08,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 308 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:16:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-09 07:16:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2024-11-09 07:16:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 343 states have (on average 1.3352769679300291) internal successors, (458), 370 states have internal predecessors, (458), 8 states have call successors, (8), 8 states have call predecessors, (8), 18 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-09 07:16:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 490 transitions. [2024-11-09 07:16:08,328 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 490 transitions. Word has length 36 [2024-11-09 07:16:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:08,328 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 490 transitions. [2024-11-09 07:16:08,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2024-11-09 07:16:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 490 transitions. [2024-11-09 07:16:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 07:16:08,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:08,329 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:16:08,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:16:08,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 07:16:08,534 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:08,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1504190735, now seen corresponding path program 1 times [2024-11-09 07:16:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:08,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131758042] [2024-11-09 07:16:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:08,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131758042] [2024-11-09 07:16:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131758042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727228254] [2024-11-09 07:16:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:08,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:08,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:08,918 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:16:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:09,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 07:16:09,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:09,266 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:16:09,266 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 [2024-11-09 07:16:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:09,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727228254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103155070] [2024-11-09 07:16:09,627 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:16:09,628 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:09,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:09,628 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:09,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:11,035 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-09 07:16:11,833 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:16,953 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10040#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (exists ((|v_parse_input_#t~mem2#1.base_79| Int)) (and (or (and (<= 4 (select |#length| 6)) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (= (select (select |#memory_$Pointer$.base| 6) 0) |v_parse_input_#t~mem2#1.base_79|) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 0) (= (select |#valid| 6) 1)) (and (= (select |#valid| |parse_input_~input#1.base|) 1) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_#t~mem2#1.offset| (select (select |#memory_$Pointer$.offset| 6) 9)) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (<= 13 (select |#length| 6)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= |parse_input_~i~0#1| 1) (<= 1 (select |#length| |parse_input_~input#1.base|)) (= (select (select |#memory_$Pointer$.base| 6) 9) |v_parse_input_#t~mem2#1.base_79|) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))) (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_79|) 1)))) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= ~state~0 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:16:16,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:16,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2024-11-09 07:16:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401489888] [2024-11-09 07:16:16,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:16,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 07:16:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 07:16:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1171, Unknown=1, NotChecked=0, Total=1332 [2024-11-09 07:16:16,956 INFO L87 Difference]: Start difference. First operand 387 states and 490 transitions. Second operand has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2024-11-09 07:16:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:17,496 INFO L93 Difference]: Finished difference Result 498 states and 622 transitions. [2024-11-09 07:16:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:16:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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 37 [2024-11-09 07:16:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:17,499 INFO L225 Difference]: With dead ends: 498 [2024-11-09 07:16:17,499 INFO L226 Difference]: Without dead ends: 498 [2024-11-09 07:16:17,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=264, Invalid=1715, Unknown=1, NotChecked=0, Total=1980 [2024-11-09 07:16:17,501 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 263 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:17,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 465 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:16:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-09 07:16:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 462. [2024-11-09 07:16:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 412 states have (on average 1.325242718446602) internal successors, (546), 441 states have internal predecessors, (546), 10 states have call successors, (10), 10 states have call predecessors, (10), 22 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-09 07:16:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 588 transitions. [2024-11-09 07:16:17,514 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 588 transitions. Word has length 37 [2024-11-09 07:16:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:17,515 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 588 transitions. [2024-11-09 07:16:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2024-11-09 07:16:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 588 transitions. [2024-11-09 07:16:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 07:16:17,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:17,516 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:16:17,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:16:17,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 07:16:17,717 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:17,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1525075488, now seen corresponding path program 1 times [2024-11-09 07:16:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:17,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363818546] [2024-11-09 07:16:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 07:16:17,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:17,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363818546] [2024-11-09 07:16:17,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363818546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415268177] [2024-11-09 07:16:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:17,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:17,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:17,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:17,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:16:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:17,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:16:18,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:18,204 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:16:18,204 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 [2024-11-09 07:16:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:16:18,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:18,323 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 [2024-11-09 07:16:18,550 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 [2024-11-09 07:16:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:16:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415268177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:16:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1269621027] [2024-11-09 07:16:18,585 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 07:16:18,586 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:18,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:18,586 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:18,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:19,776 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 33 for LOIs [2024-11-09 07:16:19,984 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:23,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11264#(and (<= |parse_input_~i~0#1| 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (not (= (select |#valid| 6) 1)) (<= 3 |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= |parse_input_#in~input#1.base| 4) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-09 07:16:23,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:23,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:16:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2024-11-09 07:16:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277680269] [2024-11-09 07:16:23,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:23,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 07:16:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 07:16:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-11-09 07:16:23,221 INFO L87 Difference]: Start difference. First operand 462 states and 588 transitions. Second operand has 15 states, 10 states have (on average 8.3) internal successors, (83), 13 states have internal predecessors, (83), 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) [2024-11-09 07:16:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:23,775 INFO L93 Difference]: Finished difference Result 531 states and 640 transitions. [2024-11-09 07:16:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 07:16:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 8.3) internal successors, (83), 13 states have internal predecessors, (83), 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 37 [2024-11-09 07:16:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:23,778 INFO L225 Difference]: With dead ends: 531 [2024-11-09 07:16:23,778 INFO L226 Difference]: Without dead ends: 531 [2024-11-09 07:16:23,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=233, Invalid=1327, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:16:23,780 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 269 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:23,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 295 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:16:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-09 07:16:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 468. [2024-11-09 07:16:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 420 states have (on average 1.338095238095238) internal successors, (562), 447 states have internal predecessors, (562), 10 states have call successors, (10), 10 states have call predecessors, (10), 20 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-11-09 07:16:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 599 transitions. [2024-11-09 07:16:23,798 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 599 transitions. Word has length 37 [2024-11-09 07:16:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:23,798 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 599 transitions. [2024-11-09 07:16:23,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 8.3) internal successors, (83), 13 states have internal predecessors, (83), 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) [2024-11-09 07:16:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 599 transitions. [2024-11-09 07:16:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 07:16:23,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:23,800 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:16:23,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:16:24,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 07:16:24,004 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:24,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash 614727517, now seen corresponding path program 1 times [2024-11-09 07:16:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:24,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557609055] [2024-11-09 07:16:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:24,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:24,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557609055] [2024-11-09 07:16:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557609055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836055270] [2024-11-09 07:16:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:24,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:24,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:24,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:16:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:24,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:16:24,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:16:24,802 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 [2024-11-09 07:16:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:25,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836055270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [933902546] [2024-11-09 07:16:25,315 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:16:25,315 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:25,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:25,316 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:25,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:26,518 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 40 for LOIs [2024-11-09 07:16:26,895 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:30,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12481#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_#in~input#1.base| 4) (<= ~state~0 1) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (exists ((|v_parse_input_#t~mem2#1.offset_106| Int) (|v_parse_input_#t~mem2#1.base_109| Int)) (and (or (< (select |#length| |v_parse_input_#t~mem2#1.base_109|) (+ |v_parse_input_#t~mem2#1.offset_106| 1)) (< |v_parse_input_#t~mem2#1.offset_106| 0)) (= (select |#valid| |v_parse_input_#t~mem2#1.base_109|) 1))) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-09 07:16:30,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:30,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:30,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2024-11-09 07:16:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421361305] [2024-11-09 07:16:30,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:30,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:16:30,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:16:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:16:30,628 INFO L87 Difference]: Start difference. First operand 468 states and 599 transitions. Second operand has 18 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2024-11-09 07:16:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:32,204 INFO L93 Difference]: Finished difference Result 605 states and 731 transitions. [2024-11-09 07:16:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:16:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 38 [2024-11-09 07:16:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:32,208 INFO L225 Difference]: With dead ends: 605 [2024-11-09 07:16:32,208 INFO L226 Difference]: Without dead ends: 605 [2024-11-09 07:16:32,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=373, Invalid=2707, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 07:16:32,210 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 450 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:32,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 491 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:16:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-09 07:16:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 460. [2024-11-09 07:16:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 415 states have (on average 1.3301204819277108) internal successors, (552), 441 states have internal predecessors, (552), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:16:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 583 transitions. [2024-11-09 07:16:32,227 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 583 transitions. Word has length 38 [2024-11-09 07:16:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:32,227 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 583 transitions. [2024-11-09 07:16:32,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2024-11-09 07:16:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 583 transitions. [2024-11-09 07:16:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 07:16:32,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:32,229 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-09 07:16:32,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:16:32,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:32,430 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:32,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash -32699890, now seen corresponding path program 1 times [2024-11-09 07:16:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409705526] [2024-11-09 07:16:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:32,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:33,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409705526] [2024-11-09 07:16:33,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409705526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284958066] [2024-11-09 07:16:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:33,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:33,122 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:33,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:16:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:33,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:16:33,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:33,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284958066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:16:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395530088] [2024-11-09 07:16:34,233 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 07:16:34,234 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:34,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:34,235 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:34,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:35,498 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 33 for LOIs [2024-11-09 07:16:35,780 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:39,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13843#(and (exists ((|v_parse_input_#t~mem2#1.base_127| Int)) (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_127|) 1))) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 3 |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= |parse_input_#in~input#1.base| 4) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= |old(~global~0.offset)| 0) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-09 07:16:39,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:39,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:16:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 24 [2024-11-09 07:16:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566367699] [2024-11-09 07:16:39,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:39,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:16:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:16:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1584, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 07:16:39,922 INFO L87 Difference]: Start difference. First operand 460 states and 583 transitions. Second operand has 25 states, 22 states have (on average 4.545454545454546) internal successors, (100), 20 states have internal predecessors, (100), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:16:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:42,838 INFO L93 Difference]: Finished difference Result 747 states and 900 transitions. [2024-11-09 07:16:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 07:16:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.545454545454546) internal successors, (100), 20 states have internal predecessors, (100), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2024-11-09 07:16:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:42,841 INFO L225 Difference]: With dead ends: 747 [2024-11-09 07:16:42,841 INFO L226 Difference]: Without dead ends: 747 [2024-11-09 07:16:42,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=632, Invalid=4770, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 07:16:42,843 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 1146 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:42,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 755 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:16:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-09 07:16:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 528. [2024-11-09 07:16:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 483 states have (on average 1.3126293995859213) internal successors, (634), 509 states have internal predecessors, (634), 9 states have call successors, (9), 9 states have call predecessors, (9), 18 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:16:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 665 transitions. [2024-11-09 07:16:42,860 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 665 transitions. Word has length 38 [2024-11-09 07:16:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:42,860 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 665 transitions. [2024-11-09 07:16:42,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.545454545454546) internal successors, (100), 20 states have internal predecessors, (100), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:16:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 665 transitions. [2024-11-09 07:16:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 07:16:42,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:42,862 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:16:42,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:16:43,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:43,066 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:16:43,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1478051, now seen corresponding path program 1 times [2024-11-09 07:16:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043274751] [2024-11-09 07:16:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:43,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043274751] [2024-11-09 07:16:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043274751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299687239] [2024-11-09 07:16:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:43,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:43,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:43,168 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:43,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:16:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:43,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:16:43,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:43,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299687239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:16:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1288760229] [2024-11-09 07:16:43,360 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:16:43,361 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:43,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:43,363 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:43,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:43,856 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:16:45,711 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1288760229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:16:59,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:16:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 19 [2024-11-09 07:16:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928946444] [2024-11-09 07:16:59,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:16:59,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:16:59,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:16:59,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:16:59,332 INFO L87 Difference]: Start difference. First operand 528 states and 665 transitions. Second operand has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 2 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) [2024-11-09 07:17:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:03,242 INFO L93 Difference]: Finished difference Result 997 states and 1253 transitions. [2024-11-09 07:17:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:17:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 2 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 39 [2024-11-09 07:17:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:03,251 INFO L225 Difference]: With dead ends: 997 [2024-11-09 07:17:03,251 INFO L226 Difference]: Without dead ends: 994 [2024-11-09 07:17:03,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2024-11-09 07:17:03,253 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 136 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:03,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 225 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 07:17:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-09 07:17:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 839. [2024-11-09 07:17:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 779 states have (on average 1.3093709884467266) internal successors, (1020), 810 states have internal predecessors, (1020), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-09 07:17:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1074 transitions. [2024-11-09 07:17:03,282 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1074 transitions. Word has length 39 [2024-11-09 07:17:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:03,283 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1074 transitions. [2024-11-09 07:17:03,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 2 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) [2024-11-09 07:17:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1074 transitions. [2024-11-09 07:17:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 07:17:03,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:03,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:03,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:17:03,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:03,486 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:03,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 45819686, now seen corresponding path program 1 times [2024-11-09 07:17:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054537392] [2024-11-09 07:17:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:03,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054537392] [2024-11-09 07:17:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054537392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715684585] [2024-11-09 07:17:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:03,596 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:03,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 07:17:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:03,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:17:03,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:03,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715684585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:17:03,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693255684] [2024-11-09 07:17:03,873 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 07:17:03,873 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:03,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:03,874 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:03,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:04,466 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:17:06,708 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:21,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17545#(and (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.base |old(~global~0.base)|) (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |#length| (store |old(#length)| |parse_input_c1_~x~0#1.base| 1)) (= (store |old(#valid)| |parse_input_c1_~x~0#1.base| 1) |#valid|) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (= (select |old(#valid)| 4) 1) (<= 1 (select |old(#length)| 4)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |old(#length)| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (<= |#StackHeapBarrier| ~global~0.base) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (= (select |old(#valid)| |parse_input_c1_~x~0#1.base|) 0) (= (select |old(#valid)| 6) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (<= 9 (select |old(#length)| 6)) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 07:17:21,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:21,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:17:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-09 07:17:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198281976] [2024-11-09 07:17:21,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:21,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:17:21,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:17:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:17:21,336 INFO L87 Difference]: Start difference. First operand 839 states and 1074 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) [2024-11-09 07:17:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:21,400 INFO L93 Difference]: Finished difference Result 836 states and 1055 transitions. [2024-11-09 07:17:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:17:21,401 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 40 [2024-11-09 07:17:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:21,404 INFO L225 Difference]: With dead ends: 836 [2024-11-09 07:17:21,404 INFO L226 Difference]: Without dead ends: 836 [2024-11-09 07:17:21,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:17:21,406 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:21,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 79 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:17:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-09 07:17:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2024-11-09 07:17:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 779 states have (on average 1.2849807445442876) internal successors, (1001), 807 states have internal predecessors, (1001), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-09 07:17:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1055 transitions. [2024-11-09 07:17:21,425 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1055 transitions. Word has length 40 [2024-11-09 07:17:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:21,426 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1055 transitions. [2024-11-09 07:17:21,426 INFO L472 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) [2024-11-09 07:17:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1055 transitions. [2024-11-09 07:17:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 07:17:21,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:21,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:21,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 07:17:21,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:21,628 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:21,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1420410373, now seen corresponding path program 1 times [2024-11-09 07:17:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119359729] [2024-11-09 07:17:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:21,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119359729] [2024-11-09 07:17:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119359729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319839935] [2024-11-09 07:17:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:21,773 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:21,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:17:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:21,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:17:21,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:21,869 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 [2024-11-09 07:17:21,915 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 07:17:21,915 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 14 [2024-11-09 07:17:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:21,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319839935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:17:21,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1361206061] [2024-11-09 07:17:21,995 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 07:17:21,996 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:21,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:21,996 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:21,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:22,521 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 07:17:24,582 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:38,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19481#(and (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.base |old(~global~0.base)|) (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (not (= ~global~0.base 0)) (<= 1 |#StackHeapBarrier|) (= |#length| (store |old(#length)| |parse_input_c1_~x~0#1.base| 1)) (not (= (select |#valid| ~global~0.base) 1)) (= (store |old(#valid)| |parse_input_c1_~x~0#1.base| 1) |#valid|) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (= (select |old(#valid)| 4) 1) (<= 1 (select |old(#length)| 4)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |old(#length)| (select (select |#memory_$Pointer$.base| 6) 0))) (= |parse_input_~input#1.base| 4) (= ~global~0.offset 0) (= |parse_input_#in~input#1.base| 4) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (= (select |old(#valid)| |parse_input_c1_~x~0#1.base|) 0) (= (select |old(#valid)| 6) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (<= 9 (select |old(#length)| 6)) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0) (<= (+ ~global~0.base 1) |#StackHeapBarrier|))' at error location [2024-11-09 07:17:38,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:38,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:17:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-09 07:17:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26911222] [2024-11-09 07:17:38,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:38,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:17:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:17:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:17:38,914 INFO L87 Difference]: Start difference. First operand 836 states and 1055 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-09 07:17:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:39,031 INFO L93 Difference]: Finished difference Result 870 states and 1074 transitions. [2024-11-09 07:17:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:17:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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 41 [2024-11-09 07:17:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:39,035 INFO L225 Difference]: With dead ends: 870 [2024-11-09 07:17:39,035 INFO L226 Difference]: Without dead ends: 870 [2024-11-09 07:17:39,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:17:39,036 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:39,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 146 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:17:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-09 07:17:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 836. [2024-11-09 07:17:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 779 states have (on average 1.2734274711168165) internal successors, (992), 807 states have internal predecessors, (992), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-09 07:17:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1046 transitions. [2024-11-09 07:17:39,056 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1046 transitions. Word has length 41 [2024-11-09 07:17:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:39,057 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1046 transitions. [2024-11-09 07:17:39,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-09 07:17:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1046 transitions. [2024-11-09 07:17:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 07:17:39,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:39,058 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 07:17:39,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 07:17:39,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:39,259 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:39,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1288018801, now seen corresponding path program 1 times [2024-11-09 07:17:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:39,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617483134] [2024-11-09 07:17:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 07:17:39,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617483134] [2024-11-09 07:17:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617483134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:17:39,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:17:39,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:17:39,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930632010] [2024-11-09 07:17:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:17:39,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:17:39,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:17:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:17:39,323 INFO L87 Difference]: Start difference. First operand 836 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-09 07:17:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:39,340 INFO L93 Difference]: Finished difference Result 791 states and 966 transitions. [2024-11-09 07:17:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:17:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 47 [2024-11-09 07:17:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:39,345 INFO L225 Difference]: With dead ends: 791 [2024-11-09 07:17:39,345 INFO L226 Difference]: Without dead ends: 791 [2024-11-09 07:17:39,346 INFO L431 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 [2024-11-09 07:17:39,347 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 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 [2024-11-09 07:17:39,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:17:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-09 07:17:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-11-09 07:17:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 739 states have (on average 1.2341001353179972) internal successors, (912), 762 states have internal predecessors, (912), 14 states have call successors, (14), 14 states have call predecessors, (14), 28 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-09 07:17:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 966 transitions. [2024-11-09 07:17:39,370 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 966 transitions. Word has length 47 [2024-11-09 07:17:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:39,371 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 966 transitions. [2024-11-09 07:17:39,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-09 07:17:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 966 transitions. [2024-11-09 07:17:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:17:39,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:39,373 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:39,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 07:17:39,373 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:39,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1868773681, now seen corresponding path program 1 times [2024-11-09 07:17:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162376141] [2024-11-09 07:17:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:17:39,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162376141] [2024-11-09 07:17:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162376141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891024155] [2024-11-09 07:17:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:39,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:39,472 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:39,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:17:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:39,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:17:39,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:17:39,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:17:39,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891024155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:17:39,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:17:39,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-09 07:17:39,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666632970] [2024-11-09 07:17:39,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:17:39,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:17:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:39,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:17:39,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:17:39,631 INFO L87 Difference]: Start difference. First operand 791 states and 966 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-09 07:17:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:39,670 INFO L93 Difference]: Finished difference Result 374 states and 437 transitions. [2024-11-09 07:17:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:17:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 49 [2024-11-09 07:17:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:39,672 INFO L225 Difference]: With dead ends: 374 [2024-11-09 07:17:39,672 INFO L226 Difference]: Without dead ends: 361 [2024-11-09 07:17:39,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:17:39,673 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:39,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 116 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:17:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-09 07:17:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 359. [2024-11-09 07:17:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 328 states have (on average 1.2103658536585367) internal successors, (397), 342 states have internal predecessors, (397), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 07:17:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 423 transitions. [2024-11-09 07:17:39,684 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 423 transitions. Word has length 49 [2024-11-09 07:17:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:39,685 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 423 transitions. [2024-11-09 07:17:39,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-09 07:17:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 423 transitions. [2024-11-09 07:17:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:17:39,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:39,686 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:39,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 07:17:39,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:39,887 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:39,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1819068281, now seen corresponding path program 1 times [2024-11-09 07:17:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654898493] [2024-11-09 07:17:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:40,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654898493] [2024-11-09 07:17:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654898493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304774940] [2024-11-09 07:17:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:40,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:40,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:40,241 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:40,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:17:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:40,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:17:40,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:40,502 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:17:40,503 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 [2024-11-09 07:17:40,671 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:17:40,672 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 [2024-11-09 07:17:40,716 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:17:40,716 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 [2024-11-09 07:17:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:40,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:40,828 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 07:17:40,828 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 110 treesize of output 105 [2024-11-09 07:17:41,026 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 07:17:41,026 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 110 treesize of output 105 [2024-11-09 07:17:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:41,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304774940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:17:41,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449026680] [2024-11-09 07:17:41,211 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:17:41,211 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:41,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:41,211 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:41,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:42,308 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:17:43,750 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:54,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24002#(and (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= 4 |parse_input_#in~input#1.base|) (not (= (select |#valid| 6) 1)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:17:54,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:54,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:17:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 25 [2024-11-09 07:17:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878155945] [2024-11-09 07:17:54,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:54,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:17:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:17:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1616, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 07:17:54,895 INFO L87 Difference]: Start difference. First operand 359 states and 423 transitions. Second operand has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 25 states have internal predecessors, (134), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:17:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:55,166 INFO L93 Difference]: Finished difference Result 374 states and 437 transitions. [2024-11-09 07:17:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:17:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 25 states have internal predecessors, (134), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2024-11-09 07:17:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:55,168 INFO L225 Difference]: With dead ends: 374 [2024-11-09 07:17:55,168 INFO L226 Difference]: Without dead ends: 374 [2024-11-09 07:17:55,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=379, Invalid=1973, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 07:17:55,169 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 256 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:55,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 133 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:17:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-09 07:17:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2024-11-09 07:17:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 332 states have (on average 1.2018072289156627) internal successors, (399), 347 states have internal predecessors, (399), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-09 07:17:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 427 transitions. [2024-11-09 07:17:55,177 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 427 transitions. Word has length 51 [2024-11-09 07:17:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:55,177 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 427 transitions. [2024-11-09 07:17:55,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 5.826086956521739) internal successors, (134), 25 states have internal predecessors, (134), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:17:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 427 transitions. [2024-11-09 07:17:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:17:55,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:55,179 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:55,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 07:17:55,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 07:17:55,383 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:17:55,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash -350254544, now seen corresponding path program 1 times [2024-11-09 07:17:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:55,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629573120] [2024-11-09 07:17:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:55,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:17:55,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629573120] [2024-11-09 07:17:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629573120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013496456] [2024-11-09 07:17:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:55,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:55,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:55,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:55,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 07:17:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:55,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:17:55,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:55,636 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_parse_input_c1_~x~0#1.base_111| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v_parse_input_c1_~x~0#1.base_111| (select |c_#valid| |v_parse_input_c1_~x~0#1.base_111|))) (<= |v_parse_input_c1_~x~0#1.base_111| c_~global~0.base))) is different from true [2024-11-09 07:17:55,670 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:17:55,670 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 [2024-11-09 07:17:55,835 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:17:55,835 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 [2024-11-09 07:17:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-09 07:17:55,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013496456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179886473] [2024-11-09 07:17:56,022 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:17:56,022 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:56,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:56,022 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:56,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:56,585 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:17:58,392 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:11,575 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24966#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| |parse_input_#in~input#1.base|) 1)) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (<= 4 |parse_input_#in~input#1.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:18:11,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:11,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:18:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 16 [2024-11-09 07:18:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805313764] [2024-11-09 07:18:11,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:11,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:18:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:11,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:18:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1056, Unknown=1, NotChecked=66, Total=1260 [2024-11-09 07:18:11,578 INFO L87 Difference]: Start difference. First operand 364 states and 427 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-09 07:18:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:12,958 INFO L93 Difference]: Finished difference Result 385 states and 424 transitions. [2024-11-09 07:18:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 07:18:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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 51 [2024-11-09 07:18:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:12,960 INFO L225 Difference]: With dead ends: 385 [2024-11-09 07:18:12,960 INFO L226 Difference]: Without dead ends: 385 [2024-11-09 07:18:12,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=444, Invalid=2981, Unknown=1, NotChecked=114, Total=3540 [2024-11-09 07:18:12,961 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 424 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:12,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 461 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 476 Invalid, 0 Unknown, 219 Unchecked, 0.5s Time] [2024-11-09 07:18:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-09 07:18:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 348. [2024-11-09 07:18:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 318 states have (on average 1.1761006289308176) internal successors, (374), 331 states have internal predecessors, (374), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-09 07:18:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2024-11-09 07:18:12,970 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 51 [2024-11-09 07:18:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:12,971 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2024-11-09 07:18:12,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-09 07:18:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2024-11-09 07:18:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 07:18:12,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:12,972 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:12,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 07:18:13,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 07:18:13,177 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:18:13,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 556541845, now seen corresponding path program 1 times [2024-11-09 07:18:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907618490] [2024-11-09 07:18:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:14,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907618490] [2024-11-09 07:18:14,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907618490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016364174] [2024-11-09 07:18:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:14,696 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:14,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 07:18:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:14,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 07:18:14,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:18:15,135 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:18:15,136 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 [2024-11-09 07:18:15,488 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:18:15,488 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 [2024-11-09 07:18:15,584 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:18:15,585 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 [2024-11-09 07:18:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:15,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:18:15,928 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-09 07:18:15,928 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 178 treesize of output 165 [2024-11-09 07:18:16,328 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2024-11-09 07:18:16,329 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 3 case distinctions, treesize of input 84 treesize of output 101 [2024-11-09 07:18:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016364174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:18:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165321477] [2024-11-09 07:18:16,836 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:18:16,836 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:18:16,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:18:16,837 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:18:16,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:18:17,934 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:18:19,159 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:31,047 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26122#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (<= 4 |parse_input_#in~input#1.base|) (not (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:18:31,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:31,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:18:31,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 14] total 45 [2024-11-09 07:18:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412974795] [2024-11-09 07:18:31,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:31,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 07:18:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 07:18:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=3638, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 07:18:31,051 INFO L87 Difference]: Start difference. First operand 348 states and 398 transitions. Second operand has 46 states, 40 states have (on average 3.5) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:18:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:32,114 INFO L93 Difference]: Finished difference Result 359 states and 406 transitions. [2024-11-09 07:18:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:18:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 3.5) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 9 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 52 [2024-11-09 07:18:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:32,117 INFO L225 Difference]: With dead ends: 359 [2024-11-09 07:18:32,117 INFO L226 Difference]: Without dead ends: 359 [2024-11-09 07:18:32,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=653, Invalid=4603, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 07:18:32,118 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 484 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:32,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 236 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:18:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-09 07:18:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 348. [2024-11-09 07:18:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 318 states have (on average 1.169811320754717) internal successors, (372), 331 states have internal predecessors, (372), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-09 07:18:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 396 transitions. [2024-11-09 07:18:32,129 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 396 transitions. Word has length 52 [2024-11-09 07:18:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:32,129 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 396 transitions. [2024-11-09 07:18:32,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 3.5) internal successors, (140), 37 states have internal predecessors, (140), 8 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:18:32,130 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 396 transitions. [2024-11-09 07:18:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:18:32,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:32,131 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2024-11-09 07:18:32,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 07:18:32,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 07:18:32,332 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:18:32,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2034197481, now seen corresponding path program 1 times [2024-11-09 07:18:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569772187] [2024-11-09 07:18:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:32,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569772187] [2024-11-09 07:18:32,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569772187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596480810] [2024-11-09 07:18:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:32,870 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:32,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:18:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:33,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:18:33,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:18:33,134 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:18:33,134 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 [2024-11-09 07:18:33,478 INFO L349 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2024-11-09 07:18:33,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 75 [2024-11-09 07:18:33,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 21 treesize of output 14 [2024-11-09 07:18:33,609 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-09 07:18:33,609 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 5 case distinctions, treesize of input 31 treesize of output 1 [2024-11-09 07:18:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:33,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:18:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596480810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033426290] [2024-11-09 07:18:33,798 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:18:33,799 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:18:33,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:18:33,799 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:18:33,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:18:35,222 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:18:36,868 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:49,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27073#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| |parse_input_#in~input#1.base|) 1)) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (<= 4 |parse_input_#in~input#1.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (= |old(~state~0)| 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:18:49,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:49,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:18:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-09 07:18:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386175012] [2024-11-09 07:18:49,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:49,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:18:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:18:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:18:49,721 INFO L87 Difference]: Start difference. First operand 348 states and 396 transitions. Second operand has 20 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:18:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:50,781 INFO L93 Difference]: Finished difference Result 357 states and 404 transitions. [2024-11-09 07:18:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 07:18:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-09 07:18:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:50,783 INFO L225 Difference]: With dead ends: 357 [2024-11-09 07:18:50,783 INFO L226 Difference]: Without dead ends: 357 [2024-11-09 07:18:50,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=375, Invalid=2381, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 07:18:50,785 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 325 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:50,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 396 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:18:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-09 07:18:50,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 347. [2024-11-09 07:18:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 318 states have (on average 1.1635220125786163) internal successors, (370), 330 states have internal predecessors, (370), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-09 07:18:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 394 transitions. [2024-11-09 07:18:50,792 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 394 transitions. Word has length 54 [2024-11-09 07:18:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:50,793 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 394 transitions. [2024-11-09 07:18:50,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:18:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 394 transitions. [2024-11-09 07:18:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 07:18:50,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:50,794 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2024-11-09 07:18:50,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 07:18:50,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 07:18:50,999 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:18:50,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1364387579, now seen corresponding path program 1 times [2024-11-09 07:18:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749305263] [2024-11-09 07:18:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:51,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749305263] [2024-11-09 07:18:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749305263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034271858] [2024-11-09 07:18:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:51,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:51,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:51,424 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:51,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:18:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:51,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:18:51,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:18:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:18:51,720 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 [2024-11-09 07:18:51,787 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| Int)) (let ((.cse0 (select |c_#length| |parse_input_c1_~x~0#1.base|))) (and (<= 1 .cse0) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| .cse0) |c_#length|)))) is different from true [2024-11-09 07:18:51,859 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:18:51,860 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 [2024-11-09 07:18:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-09 07:18:51,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:18:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034271858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913167063] [2024-11-09 07:18:52,350 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:18:52,350 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:18:52,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:18:52,351 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:18:52,351 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:18:53,421 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:18:54,710 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:05,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28113#(and (<= 4 (select |#length| 6)) (= ~state~0 1) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |#length| (select (select |#memory_$Pointer$.base| 6) 0))) (<= 4 |parse_input_#in~input#1.base|) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= (select |#valid| |parse_input_#in~input#1.base|) 1) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (= |parse_input_~i~0#1| 0) (<= (select |#length| |parse_input_#in~input#1.base|) 0) (= |old(~state~0)| 1) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:19:06,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:06,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:19:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2024-11-09 07:19:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938435456] [2024-11-09 07:19:06,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:06,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 07:19:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:06,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 07:19:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1615, Unknown=1, NotChecked=82, Total=1892 [2024-11-09 07:19:06,003 INFO L87 Difference]: Start difference. First operand 347 states and 394 transitions. Second operand has 22 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 6 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) [2024-11-09 07:19:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:07,178 INFO L93 Difference]: Finished difference Result 359 states and 396 transitions. [2024-11-09 07:19:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:19:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 6 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 55 [2024-11-09 07:19:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:07,181 INFO L225 Difference]: With dead ends: 359 [2024-11-09 07:19:07,181 INFO L226 Difference]: Without dead ends: 359 [2024-11-09 07:19:07,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=522, Invalid=3021, Unknown=1, NotChecked=116, Total=3660 [2024-11-09 07:19:07,183 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 347 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:07,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 388 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 347 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2024-11-09 07:19:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-09 07:19:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 346. [2024-11-09 07:19:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 318 states have (on average 1.1320754716981132) internal successors, (360), 329 states have internal predecessors, (360), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-09 07:19:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 384 transitions. [2024-11-09 07:19:07,194 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 384 transitions. Word has length 55 [2024-11-09 07:19:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:07,195 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 384 transitions. [2024-11-09 07:19:07,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 6 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) [2024-11-09 07:19:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 384 transitions. [2024-11-09 07:19:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 07:19:07,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:07,197 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1] [2024-11-09 07:19:07,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 07:19:07,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:07,398 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:19:07,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:07,399 INFO L85 PathProgramCache]: Analyzing trace with hash 345266342, now seen corresponding path program 1 times [2024-11-09 07:19:07,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:07,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447574045] [2024-11-09 07:19:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:07,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:19:08,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447574045] [2024-11-09 07:19:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447574045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524161375] [2024-11-09 07:19:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:08,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:08,214 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 07:19:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:08,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:19:08,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:08,712 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:19:08,712 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 [2024-11-09 07:19:09,421 INFO L349 Elim1Store]: treesize reduction 57, result has 26.9 percent of original size [2024-11-09 07:19:09,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 67 [2024-11-09 07:19:09,514 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:19:09,515 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 24 treesize of output 9 [2024-11-09 07:19:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:19:10,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:10,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524161375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:10,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010973548] [2024-11-09 07:19:10,544 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-09 07:19:10,545 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:10,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:10,545 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:10,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:16,710 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:19:18,227 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:26,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29136#(and (<= |parse_input_~i~0#1| 1) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| 6) (* 9 |parse_input_~i~0#1|)) |parse_input_#t~mem2#1.offset|) (= 6 |~#commands~0.base|) (<= (+ (* 9 |parse_input_~i~0#1|) 4) (select |#length| 6)) (not (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) (* 9 |parse_input_~i~0#1|))) 1)) (<= 3 |parse_input_~input#1.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= |parse_input_~input#1.base| 5) (<= ~state~0 1) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (= (select |#valid| 6) 1) (<= |parse_input_#in~input#1.base| 5) (<= 0 |parse_input_~i~0#1|))' at error location [2024-11-09 07:19:26,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:26,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:19:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 30 [2024-11-09 07:19:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889542497] [2024-11-09 07:19:26,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:26,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 07:19:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 07:19:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3071, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 07:19:26,612 INFO L87 Difference]: Start difference. First operand 346 states and 384 transitions. Second operand has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 6 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) [2024-11-09 07:19:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:29,298 INFO L93 Difference]: Finished difference Result 360 states and 394 transitions. [2024-11-09 07:19:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 07:19:29,299 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 6 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 61 [2024-11-09 07:19:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:29,300 INFO L225 Difference]: With dead ends: 360 [2024-11-09 07:19:29,301 INFO L226 Difference]: Without dead ends: 360 [2024-11-09 07:19:29,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=819, Invalid=5987, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 07:19:29,303 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 528 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 94 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:29,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 426 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:19:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-09 07:19:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 345. [2024-11-09 07:19:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 318 states have (on average 1.1257861635220126) internal successors, (358), 328 states have internal predecessors, (358), 8 states have call successors, (8), 8 states have call predecessors, (8), 14 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-09 07:19:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 382 transitions. [2024-11-09 07:19:29,312 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 382 transitions. Word has length 61 [2024-11-09 07:19:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:29,312 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 382 transitions. [2024-11-09 07:19:29,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 6 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) [2024-11-09 07:19:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 382 transitions. [2024-11-09 07:19:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 07:19:29,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:29,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:29,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 07:19:29,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:29,519 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:19:29,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash -786731496, now seen corresponding path program 1 times [2024-11-09 07:19:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915140497] [2024-11-09 07:19:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:19:29,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915140497] [2024-11-09 07:19:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915140497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279692992] [2024-11-09 07:19:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:29,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:29,613 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:29,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:19:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:29,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:19:29,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:19:29,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 07:19:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279692992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [454406627] [2024-11-09 07:19:29,874 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:19:29,874 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:29,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:29,875 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:29,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:30,994 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:19:32,349 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:43,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [454406627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:43,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:43,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [3, 3, 3] total 20 [2024-11-09 07:19:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122844488] [2024-11-09 07:19:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:43,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 07:19:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 07:19:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:19:43,334 INFO L87 Difference]: Start difference. First operand 345 states and 382 transitions. Second operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:19:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:45,457 INFO L93 Difference]: Finished difference Result 538 states and 595 transitions. [2024-11-09 07:19:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:19:45,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2024-11-09 07:19:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:45,459 INFO L225 Difference]: With dead ends: 538 [2024-11-09 07:19:45,459 INFO L226 Difference]: Without dead ends: 538 [2024-11-09 07:19:45,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:19:45,460 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 83 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:45,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 210 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 07:19:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-09 07:19:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 460. [2024-11-09 07:19:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 429 states have (on average 1.1375291375291374) internal successors, (488), 441 states have internal predecessors, (488), 9 states have call successors, (9), 9 states have call predecessors, (9), 17 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-09 07:19:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 518 transitions. [2024-11-09 07:19:45,474 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 518 transitions. Word has length 63 [2024-11-09 07:19:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:45,477 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 518 transitions. [2024-11-09 07:19:45,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:19:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 518 transitions. [2024-11-09 07:19:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 07:19:45,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:45,481 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:45,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:45,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:45,682 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:19:45,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash -268318588, now seen corresponding path program 1 times [2024-11-09 07:19:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776143368] [2024-11-09 07:19:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 07:19:45,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776143368] [2024-11-09 07:19:45,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776143368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296509874] [2024-11-09 07:19:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:45,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:45,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:45,776 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:45,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 07:19:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:45,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:19:45,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 07:19:45,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 07:19:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296509874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [958697916] [2024-11-09 07:19:46,016 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:19:46,017 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:46,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:46,017 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:46,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:49,330 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 142 for LOIs [2024-11-09 07:19:50,301 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:53,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31684#(and (= |parse_input_c1_~x~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (exists ((|v_parse_input_#t~mem2#1.base_252| Int) (|v_#valid_266| (Array Int Int)) (|v_parse_input_~i~0#1_245| Int) (|v_#length_189| (Array Int Int))) (and (<= (select (select |#memory_int| 6) (+ 8 (* 9 |v_parse_input_~i~0#1_245|))) ~state~0) (= (store |v_#length_189| |parse_input_c1_~x~0#1.base| 1) |#length|) (<= 1 (select |v_#length_189| |v_parse_input_#t~mem2#1.base_252|)) (<= 0 |v_parse_input_~i~0#1_245|) (= (select |v_#valid_266| |v_parse_input_#t~mem2#1.base_252|) 1) (<= (+ 9 (* 9 |v_parse_input_~i~0#1_245|)) (select |v_#length_189| 6)) (= (select |v_#valid_266| 6) 1) (<= 1 (select |v_#length_189| |parse_input_~input#1.base|)) (= (store |v_#valid_266| |parse_input_c1_~x~0#1.base| 1) |#valid|) (or (not (= (select (select |#memory_$Pointer$.offset| 6) (+ (* 9 |v_parse_input_~i~0#1_245|) 4)) |#funAddr~c2.offset|)) (not (= |#funAddr~c2.base| (select (select |#memory_$Pointer$.base| 6) (+ (* 9 |v_parse_input_~i~0#1_245|) 4))))) (= (select |v_#valid_266| |parse_input_c1_~x~0#1.base|) 0) (= (select |v_#valid_266| |parse_input_~input#1.base|) 1))) (<= 3 |parse_input_~input#1.base|) (not (= ~global~0.offset 0)) (= |~#commands~0.offset| 0) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (<= |parse_input_~input#1.base| 5) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 3 |parse_input_#in~input#1.base|) (<= |parse_input_#in~input#1.base| 5))' at error location [2024-11-09 07:19:53,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:53,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:19:53,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-09 07:19:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908260444] [2024-11-09 07:19:53,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:53,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:19:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:19:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:19:53,717 INFO L87 Difference]: Start difference. First operand 460 states and 518 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:19:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:53,751 INFO L93 Difference]: Finished difference Result 458 states and 514 transitions. [2024-11-09 07:19:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:19:53,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-11-09 07:19:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:53,753 INFO L225 Difference]: With dead ends: 458 [2024-11-09 07:19:53,753 INFO L226 Difference]: Without dead ends: 458 [2024-11-09 07:19:53,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:19:53,754 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:53,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 67 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:19:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-09 07:19:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 252. [2024-11-09 07:19:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 234 states have (on average 1.106837606837607) internal successors, (259), 239 states have internal predecessors, (259), 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) [2024-11-09 07:19:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 274 transitions. [2024-11-09 07:19:53,759 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 274 transitions. Word has length 63 [2024-11-09 07:19:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:53,760 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 274 transitions. [2024-11-09 07:19:53,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:19:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 274 transitions. [2024-11-09 07:19:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 07:19:53,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:53,761 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:53,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 07:19:53,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:53,961 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:19:53,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -134720198, now seen corresponding path program 1 times [2024-11-09 07:19:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398901521] [2024-11-09 07:19:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:19:54,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398901521] [2024-11-09 07:19:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398901521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373704973] [2024-11-09 07:19:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:54,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:54,293 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:54,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 07:19:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:54,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:19:54,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:54,426 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 [2024-11-09 07:19:54,570 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:19:54,571 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 3 case distinctions, treesize of input 22 treesize of output 16 [2024-11-09 07:19:54,596 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 07:19:54,597 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 14 [2024-11-09 07:19:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:19:54,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:54,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373704973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:54,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1047130294] [2024-11-09 07:19:54,708 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 07:19:54,708 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:54,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:54,709 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:54,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:55,909 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 07:19:57,261 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:20:08,424 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32679#(and (= ~state~0 1) (= |parse_input_c1_~x~0#1.offset| 0) (not (= ~global~0.base 0)) (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| ~global~0.base) 1)) (= 6 |~#commands~0.base|) (not (= |parse_input_c1_~x~0#1.base| 0)) (exists ((|v_#length_196| (Array Int Int))) (and (= (store |v_#length_196| |parse_input_c1_~x~0#1.base| 1) |#length|) (<= 9 (select |v_#length_196| 6)) (<= 1 (select |v_#length_196| |parse_input_~input#1.base|)) (<= (+ (select (select |#memory_$Pointer$.offset| 6) 0) 1) (select |v_#length_196| (select (select |#memory_$Pointer$.base| 6) 0))))) (<= 4 |parse_input_#in~input#1.base|) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= (select (select |#memory_int| 6) 8) 1) (<= (+ |parse_input_c1_~x~0#1.base| 1) |#StackHeapBarrier|) (= |old(~state~0)| 1) (exists ((|v_#valid_281| (Array Int Int))) (and (= (select |v_#valid_281| 6) 1) (= |#valid| (store |v_#valid_281| |parse_input_c1_~x~0#1.base| 1)) (= 0 (select |v_#valid_281| |parse_input_c1_~x~0#1.base|)) (= (select |v_#valid_281| |parse_input_~input#1.base|) 1) (= (select |v_#valid_281| (select (select |#memory_$Pointer$.base| 6) 0)) 1))) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (or (not (= (select (select |#memory_$Pointer$.base| 6) 4) |#funAddr~c2.base|)) (not (= |#funAddr~c2.offset| (select (select |#memory_$Pointer$.offset| 6) 4)))) (= |old(~global~0.offset)| 0) (<= |parse_input_#in~input#1.base| 5) (<= (+ ~global~0.base 1) |#StackHeapBarrier|))' at error location [2024-11-09 07:20:08,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:20:08,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:20:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-09 07:20:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647319732] [2024-11-09 07:20:08,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:08,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:20:08,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:20:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:20:08,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:20:08,426 INFO L87 Difference]: Start difference. First operand 252 states and 274 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:20:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:08,686 INFO L93 Difference]: Finished difference Result 311 states and 339 transitions. [2024-11-09 07:20:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:20:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2024-11-09 07:20:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:08,688 INFO L225 Difference]: With dead ends: 311 [2024-11-09 07:20:08,688 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 07:20:08,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:20:08,689 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 40 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:08,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 152 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 07:20:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 298. [2024-11-09 07:20:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 276 states have (on average 1.108695652173913) internal successors, (306), 283 states have internal predecessors, (306), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:20:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 326 transitions. [2024-11-09 07:20:08,697 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 326 transitions. Word has length 65 [2024-11-09 07:20:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:08,697 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 326 transitions. [2024-11-09 07:20:08,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:20:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 326 transitions. [2024-11-09 07:20:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 07:20:08,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:08,699 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:08,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 07:20:08,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:08,904 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:08,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1523082356, now seen corresponding path program 1 times [2024-11-09 07:20:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:20:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45823288] [2024-11-09 07:20:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:20:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:20:08,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 07:20:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:20:09,027 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 07:20:09,028 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 07:20:09,029 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2024-11-09 07:20:09,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2024-11-09 07:20:09,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-11-09 07:20:09,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-11-09 07:20:09,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-11-09 07:20:09,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-11-09 07:20:09,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-11-09 07:20:09,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-11-09 07:20:09,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2024-11-09 07:20:09,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-11-09 07:20:09,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-11-09 07:20:09,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (11 of 23 remaining) [2024-11-09 07:20:09,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (10 of 23 remaining) [2024-11-09 07:20:09,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (9 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (8 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (7 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (6 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (5 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (4 of 23 remaining) [2024-11-09 07:20:09,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (3 of 23 remaining) [2024-11-09 07:20:09,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE (2 of 23 remaining) [2024-11-09 07:20:09,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE (1 of 23 remaining) [2024-11-09 07:20:09,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE (0 of 23 remaining) [2024-11-09 07:20:09,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-09 07:20:09,041 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:09,132 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:20:09,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:20:09 BoogieIcfgContainer [2024-11-09 07:20:09,137 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:20:09,138 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:20:09,138 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:20:09,138 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:20:09,139 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:14:29" (3/4) ... [2024-11-09 07:20:09,143 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 07:20:09,144 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:20:09,145 INFO L158 Benchmark]: Toolchain (without parser) took 341109.38ms. Allocated memory was 146.8MB in the beginning and 926.9MB in the end (delta: 780.1MB). Free memory was 103.7MB in the beginning and 814.6MB in the end (delta: -710.9MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,145 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:20:09,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 698.58ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 81.2MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.90ms. Allocated memory is still 146.8MB. Free memory was 81.2MB in the beginning and 78.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,146 INFO L158 Benchmark]: Boogie Preprocessor took 42.02ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,146 INFO L158 Benchmark]: RCFGBuilder took 762.03ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 77.1MB in the beginning and 167.6MB in the end (delta: -90.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,147 INFO L158 Benchmark]: TraceAbstraction took 339534.63ms. Allocated memory was 207.6MB in the beginning and 926.9MB in the end (delta: 719.3MB). Free memory was 166.5MB in the beginning and 814.6MB in the end (delta: -648.1MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2024-11-09 07:20:09,147 INFO L158 Benchmark]: Witness Printer took 6.79ms. Allocated memory is still 926.9MB. Free memory is still 814.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:20:09,148 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 698.58ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 81.2MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.90ms. Allocated memory is still 146.8MB. Free memory was 81.2MB in the beginning and 78.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.02ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 762.03ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 77.1MB in the beginning and 167.6MB in the end (delta: -90.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 339534.63ms. Allocated memory was 207.6MB in the beginning and 926.9MB in the end (delta: 719.3MB). Free memory was 166.5MB in the beginning and 814.6MB in the end (delta: -648.1MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 6.79ms. Allocated memory is still 926.9MB. Free memory is still 814.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 722]: 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 722. 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} }; [L723] CALL parse_input("c1") VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L692] COND FALSE !(i < 2) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=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(state)=0, commands={6:0}, global={0:0}, state=0, x={11:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={11:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(state)=0, commands={6:0}, global={11:0}, state=1] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={11:0}, state=1] [L724] CALL parse_input("c1") VAL [\old(state)=1, commands={6:0}, global={11:0}, state=1] [L692] int i = 0; VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=0, input={4:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={11:0}, i=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(state)=1, commands={6:0}, global={11:0}, state=1, x={10:0}] [L706] COND TRUE \read(*global) VAL [\old(state)=1, commands={6:0}, global={11:0}, state=1, x={10:0}] [L707] free(global) VAL [\old(state)=1, commands={6:0}, global={11:0}, state=1, x={10:0}] [L707] free(global) VAL [\old(state)=1, commands={6:0}, global={11:0}, state=1, x={10:0}] [L707] free(global) [L709] global = x [L710] state = STATE_2 VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1] [L695] RET commands[i].function() [L724] RET parse_input("c1") VAL [commands={6:0}, global={10:0}, state=1] [L725] CALL parse_input("c2") VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1] [L692] int i = 0; VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=0, input={5:0}, state=1] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, i=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(state)=1, commands={6:0}, global={10:0}, state=1, x={-5:0}] [L706] COND TRUE \read(*global) VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1, x={-5:0}] [L707] free(global) VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1, x={-5:0}] [L707] free(global) VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1, x={-5:0}] [L707] free(global) [L709] global = x [L710] state = STATE_2 VAL [\old(state)=1, commands={6:0}, global={-5:0}, state=1] [L695] RET commands[i].function() [L725] RET parse_input("c2") VAL [commands={6:0}, global={-5:0}, state=1] [L726] return 0; VAL [\result=0, commands={6:0}, global={-5:0}, 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: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 715]: 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. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: 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, 66 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 339.4s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 8270 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8270 mSDsluCounter, 8448 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 315 IncrementalHoareTripleChecker+Unchecked, 6700 mSDsCounter, 910 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9162 IncrementalHoareTripleChecker+Invalid, 10389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 910 mSolverCounterUnsat, 1748 mSDtfsCounter, 9162 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3119 GetRequests, 2078 SyntacticMatches, 32 SemanticMatches, 1009 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 13862 ImplicationChecksByTransitivity, 237.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=839occurred in iteration=21, InterpolantAutomatonStates: 412, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 1537 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 2316 NumberOfCodeBlocks, 2316 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 2637 ConstructedInterpolants, 161 QuantifiedInterpolants, 26397 SizeOfPredicates, 87 NumberOfNonLiveVariables, 6480 ConjunctsInSsa, 445 ConjunctsInUnsatCore, 70 InterpolantComputations, 11 PerfectInterpolantSequences, 770/1481 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: OVERALL_TIME: 10.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 67, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 121, TOOLS_POST_TIME: 8.1s, TOOLS_POST_CALL_APPLICATIONS: 12, TOOLS_POST_CALL_TIME: 0.8s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.4s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 139, TOOLS_QUANTIFIERELIM_TIME: 9.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 214, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 16, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 67, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 844, DAG_COMPRESSION_RETAINED_NODES: 175, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 07:20:09,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:20:12,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:20:12,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 07:20:12,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:20:12,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:20:12,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:20:12,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:20:12,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:20:12,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:20:12,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:20:12,219 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:20:12,220 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:20:12,220 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:20:12,222 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:20:12,223 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:20:12,223 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:20:12,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:20:12,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:20:12,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:20:12,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:20:12,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:20:12,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:20:12,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:20:12,232 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:20:12,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:20:12,233 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:20:12,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:20:12,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:20:12,234 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 07:20:12,234 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:20:12,235 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 07:20:12,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:20:12,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:20:12,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:20:12,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:20:12,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:20:12,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:20:12,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:20:12,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:20:12,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:20:12,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:20:12,240 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 07:20:12,240 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:12,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:20:12,240 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:20:12,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2024-11-09 07:20:12,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:20:12,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:20:12,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:20:12,843 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:20:12,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:20:12,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i Unable to find full path for "g++" [2024-11-09 07:20:15,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:20:15,619 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:20:15,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2024-11-09 07:20:15,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/a0e8d6854/4d56b9c5f4744c3596b05f12bb5efe89/FLAGdd65df812 [2024-11-09 07:20:15,665 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/data/a0e8d6854/4d56b9c5f4744c3596b05f12bb5efe89 [2024-11-09 07:20:15,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:20:15,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:20:15,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:20:15,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:20:15,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:20:15,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:20:15" (1/1) ... [2024-11-09 07:20:15,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504171cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:15, skipping insertion in model container [2024-11-09 07:20:15,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:20:15" (1/1) ... [2024-11-09 07:20:15,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:20:16,271 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:20:16,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:20:16,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:20:16,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:20:16,483 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:20:16,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16 WrapperNode [2024-11-09 07:20:16,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:20:16,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:20:16,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:20:16,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:20:16,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,579 INFO L138 Inliner]: procedures = 169, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-09 07:20:16,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:20:16,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:20:16,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:20:16,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:20:16,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:20:16,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:20:16,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:20:16,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:20:16,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (1/1) ... [2024-11-09 07:20:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:20:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:16,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:20:16,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:20:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 07:20:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-09 07:20:16,725 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-09 07:20:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:20:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:20:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:20:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:20:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:20:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 07:20:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:20:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:20:16,917 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:20:16,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:20:17,358 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-09 07:20:17,358 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:20:17,379 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:20:17,380 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:20:17,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:20:17 BoogieIcfgContainer [2024-11-09 07:20:17,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:20:17,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:20:17,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:20:17,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:20:17,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:20:15" (1/3) ... [2024-11-09 07:20:17,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a7128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:20:17, skipping insertion in model container [2024-11-09 07:20:17,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:16" (2/3) ... [2024-11-09 07:20:17,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a7128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:20:17, skipping insertion in model container [2024-11-09 07:20:17,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:20:17" (3/3) ... [2024-11-09 07:20:17,396 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2024-11-09 07:20:17,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:20:17,421 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-11-09 07:20:17,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:20:17,498 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@718a1427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:20:17,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-09 07:20:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 64 states have internal predecessors, (72), 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) [2024-11-09 07:20:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:20:17,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:17,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:17,521 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:17,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash 570384527, now seen corresponding path program 1 times [2024-11-09 07:20:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747188699] [2024-11-09 07:20:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:17,556 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 [2024-11-09 07:20:17,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:17,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:17,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:17,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:20:17,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:17,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:17,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747188699] [2024-11-09 07:20:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747188699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:17,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:17,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 07:20:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496218492] [2024-11-09 07:20:17,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:17,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:18,039 INFO L87 Difference]: Start difference. First operand has 69 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 64 states have internal predecessors, (72), 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 3.0) internal successors, (6), 2 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) [2024-11-09 07:20:18,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:18,324 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-11-09 07:20:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2024-11-09 07:20:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:18,341 INFO L225 Difference]: With dead ends: 125 [2024-11-09 07:20:18,341 INFO L226 Difference]: Without dead ends: 121 [2024-11-09 07:20:18,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:18,348 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 58 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:18,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 115 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-09 07:20:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2024-11-09 07:20:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 84 states have internal predecessors, (106), 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) [2024-11-09 07:20:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2024-11-09 07:20:18,417 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 7 [2024-11-09 07:20:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:18,418 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2024-11-09 07:20:18,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-09 07:20:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2024-11-09 07:20:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:20:18,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:18,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:18,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 07:20:18,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:18,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:18,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash 570384528, now seen corresponding path program 1 times [2024-11-09 07:20:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213811318] [2024-11-09 07:20:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:18,629 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 [2024-11-09 07:20:18,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:18,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:18,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:18,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:20:18,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:19,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:19,029 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213811318] [2024-11-09 07:20:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213811318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:19,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:19,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:20:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885152455] [2024-11-09 07:20:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:19,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:20:19,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:20:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:20:19,037 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2024-11-09 07:20:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:19,298 INFO L93 Difference]: Finished difference Result 197 states and 261 transitions. [2024-11-09 07:20:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:20:19,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2024-11-09 07:20:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:19,301 INFO L225 Difference]: With dead ends: 197 [2024-11-09 07:20:19,301 INFO L226 Difference]: Without dead ends: 197 [2024-11-09 07:20:19,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:20:19,303 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 95 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:19,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 159 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-09 07:20:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 166. [2024-11-09 07:20:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 130 states have (on average 1.7384615384615385) internal successors, (226), 152 states have internal predecessors, (226), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 257 transitions. [2024-11-09 07:20:19,328 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 257 transitions. Word has length 7 [2024-11-09 07:20:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:19,329 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 257 transitions. [2024-11-09 07:20:19,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2024-11-09 07:20:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 257 transitions. [2024-11-09 07:20:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:20:19,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:19,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:19,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:19,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:19,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:19,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 502051135, now seen corresponding path program 1 times [2024-11-09 07:20:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:19,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795939292] [2024-11-09 07:20:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:19,535 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 [2024-11-09 07:20:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:19,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:19,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:20:19,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:19,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:19,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795939292] [2024-11-09 07:20:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795939292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:19,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:19,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:20:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325828244] [2024-11-09 07:20:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:19,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:20:19,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:20:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:19,842 INFO L87 Difference]: Start difference. First operand 166 states and 257 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2024-11-09 07:20:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:20,162 INFO L93 Difference]: Finished difference Result 218 states and 313 transitions. [2024-11-09 07:20:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:20:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2024-11-09 07:20:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:20,167 INFO L225 Difference]: With dead ends: 218 [2024-11-09 07:20:20,167 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 07:20:20,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:20,169 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 87 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:20,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 181 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:20:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 07:20:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 170. [2024-11-09 07:20:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.7164179104477613) internal successors, (230), 156 states have internal predecessors, (230), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 261 transitions. [2024-11-09 07:20:20,193 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 261 transitions. Word has length 8 [2024-11-09 07:20:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:20,194 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 261 transitions. [2024-11-09 07:20:20,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2024-11-09 07:20:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 261 transitions. [2024-11-09 07:20:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:20:20,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:20,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:20,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:20,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:20,396 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:20,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1616283953, now seen corresponding path program 1 times [2024-11-09 07:20:20,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:20,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661242792] [2024-11-09 07:20:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:20,398 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 [2024-11-09 07:20:20,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:20,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:20,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:20,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:20:20,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:20,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:20,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661242792] [2024-11-09 07:20:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661242792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:20,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:20,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:20:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590215410] [2024-11-09 07:20:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:20,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:20:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:20:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:20,716 INFO L87 Difference]: Start difference. First operand 170 states and 261 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-09 07:20:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:20,989 INFO L93 Difference]: Finished difference Result 200 states and 263 transitions. [2024-11-09 07:20:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:20:20,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2024-11-09 07:20:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:20,992 INFO L225 Difference]: With dead ends: 200 [2024-11-09 07:20:20,992 INFO L226 Difference]: Without dead ends: 200 [2024-11-09 07:20:20,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:20,993 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 92 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:20,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 212 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-09 07:20:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 170. [2024-11-09 07:20:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 156 states have internal predecessors, (228), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 259 transitions. [2024-11-09 07:20:21,008 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 259 transitions. Word has length 9 [2024-11-09 07:20:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:21,009 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 259 transitions. [2024-11-09 07:20:21,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-09 07:20:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 259 transitions. [2024-11-09 07:20:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 07:20:21,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:21,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:21,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:21,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:21,213 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:21,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1434805057, now seen corresponding path program 1 times [2024-11-09 07:20:21,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226819831] [2024-11-09 07:20:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:21,214 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 [2024-11-09 07:20:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:21,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:21,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:20:21,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:21,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:21,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:21,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226819831] [2024-11-09 07:20:21,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226819831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:21,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:21,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:20:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826032348] [2024-11-09 07:20:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:21,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:20:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:20:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:21,376 INFO L87 Difference]: Start difference. First operand 170 states and 259 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 07:20:21,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:21,561 INFO L93 Difference]: Finished difference Result 267 states and 365 transitions. [2024-11-09 07:20:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:20:21,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-09 07:20:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:21,564 INFO L225 Difference]: With dead ends: 267 [2024-11-09 07:20:21,564 INFO L226 Difference]: Without dead ends: 267 [2024-11-09 07:20:21,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:21,565 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 153 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:21,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 207 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-09 07:20:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 206. [2024-11-09 07:20:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 168 states have (on average 1.6547619047619047) internal successors, (278), 191 states have internal predecessors, (278), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 309 transitions. [2024-11-09 07:20:21,580 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 309 transitions. Word has length 10 [2024-11-09 07:20:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:21,580 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 309 transitions. [2024-11-09 07:20:21,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 07:20:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 309 transitions. [2024-11-09 07:20:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:20:21,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:21,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:21,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 07:20:21,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:21,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:21,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1529283857, now seen corresponding path program 1 times [2024-11-09 07:20:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89512314] [2024-11-09 07:20:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:21,786 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 [2024-11-09 07:20:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:21,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:21,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:21,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:20:21,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:21,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:21,968 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89512314] [2024-11-09 07:20:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89512314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:20:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29030399] [2024-11-09 07:20:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:21,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:20:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:20:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:20:21,971 INFO L87 Difference]: Start difference. First operand 206 states and 309 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-09 07:20:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:22,181 INFO L93 Difference]: Finished difference Result 256 states and 332 transitions. [2024-11-09 07:20:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:20:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2024-11-09 07:20:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:22,183 INFO L225 Difference]: With dead ends: 256 [2024-11-09 07:20:22,184 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 07:20:22,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:22,185 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 189 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:22,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 07:20:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 220. [2024-11-09 07:20:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 181 states have (on average 1.6519337016574585) internal successors, (299), 205 states have internal predecessors, (299), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 330 transitions. [2024-11-09 07:20:22,199 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 330 transitions. Word has length 11 [2024-11-09 07:20:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:22,200 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 330 transitions. [2024-11-09 07:20:22,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-09 07:20:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 330 transitions. [2024-11-09 07:20:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:20:22,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:22,201 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:22,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:22,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:22,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:22,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 825946099, now seen corresponding path program 1 times [2024-11-09 07:20:22,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054974267] [2024-11-09 07:20:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:22,405 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 [2024-11-09 07:20:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:22,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:22,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:22,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:20:22,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:22,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:23,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054974267] [2024-11-09 07:20:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054974267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1616314423] [2024-11-09 07:20:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:23,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:23,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:23,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 07:20:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:23,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:20:23,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:23,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1616314423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508392913] [2024-11-09 07:20:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:23,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:23,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:23,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:23,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:20:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:23,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:20:23,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:23,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508392913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:24,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:20:24,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2024-11-09 07:20:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76305821] [2024-11-09 07:20:24,225 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:24,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:20:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:20:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:20:24,226 INFO L87 Difference]: Start difference. First operand 220 states and 330 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-09 07:20:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:24,767 INFO L93 Difference]: Finished difference Result 294 states and 390 transitions. [2024-11-09 07:20:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:20:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 16 [2024-11-09 07:20:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:24,770 INFO L225 Difference]: With dead ends: 294 [2024-11-09 07:20:24,770 INFO L226 Difference]: Without dead ends: 294 [2024-11-09 07:20:24,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:20:24,771 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 154 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:24,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 342 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:20:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-09 07:20:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 253. [2024-11-09 07:20:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 214 states have (on average 1.6355140186915889) internal successors, (350), 238 states have internal predecessors, (350), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 381 transitions. [2024-11-09 07:20:24,801 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 381 transitions. Word has length 16 [2024-11-09 07:20:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:24,801 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 381 transitions. [2024-11-09 07:20:24,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-09 07:20:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 381 transitions. [2024-11-09 07:20:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:20:24,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:24,802 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:24,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:20:25,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:25,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 07:20:25,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:25,405 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:25,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:25,405 INFO L85 PathProgramCache]: Analyzing trace with hash -165474756, now seen corresponding path program 1 times [2024-11-09 07:20:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690716854] [2024-11-09 07:20:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:25,406 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 [2024-11-09 07:20:25,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:25,409 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:25,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:25,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:20:25,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:25,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:26,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690716854] [2024-11-09 07:20:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690716854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960863955] [2024-11-09 07:20:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:26,089 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 07:20:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:26,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:20:26,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:26,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:26,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [960863955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:26,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951125134] [2024-11-09 07:20:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:26,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:26,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:20:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:26,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:20:26,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:27,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951125134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:20:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 18 [2024-11-09 07:20:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465101469] [2024-11-09 07:20:27,841 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:27,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:20:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:27,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:20:27,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:20:27,842 INFO L87 Difference]: Start difference. First operand 253 states and 381 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:20:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:29,628 INFO L93 Difference]: Finished difference Result 397 states and 576 transitions. [2024-11-09 07:20:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:20:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 07:20:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:29,631 INFO L225 Difference]: With dead ends: 397 [2024-11-09 07:20:29,631 INFO L226 Difference]: Without dead ends: 397 [2024-11-09 07:20:29,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2024-11-09 07:20:29,633 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 466 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:29,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 399 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:20:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-09 07:20:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 319. [2024-11-09 07:20:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 280 states have (on average 1.6321428571428571) internal successors, (457), 304 states have internal predecessors, (457), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-09 07:20:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 488 transitions. [2024-11-09 07:20:29,649 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 488 transitions. Word has length 17 [2024-11-09 07:20:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:29,650 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 488 transitions. [2024-11-09 07:20:29,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:20:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 488 transitions. [2024-11-09 07:20:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:20:29,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:29,652 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:29,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:20:29,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-09 07:20:30,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:30,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:30,253 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:30,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash -834750094, now seen corresponding path program 1 times [2024-11-09 07:20:30,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:30,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96120932] [2024-11-09 07:20:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:30,254 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 [2024-11-09 07:20:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:30,256 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:30,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:30,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:20:30,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:30,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:31,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96120932] [2024-11-09 07:20:31,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96120932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:31,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1125932903] [2024-11-09 07:20:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:31,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:31,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:31,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:31,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 07:20:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:31,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:20:31,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:31,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1125932903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:31,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632916074] [2024-11-09 07:20:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:31,623 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:31,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:20:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:31,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:20:31,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:32,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632916074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:33,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:20:33,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 15 [2024-11-09 07:20:33,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717613387] [2024-11-09 07:20:33,021 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:33,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 07:20:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 07:20:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:20:33,023 INFO L87 Difference]: Start difference. First operand 319 states and 488 transitions. Second operand has 17 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:20:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:35,477 INFO L93 Difference]: Finished difference Result 574 states and 796 transitions. [2024-11-09 07:20:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:20:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 07:20:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:35,482 INFO L225 Difference]: With dead ends: 574 [2024-11-09 07:20:35,482 INFO L226 Difference]: Without dead ends: 574 [2024-11-09 07:20:35,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:20:35,484 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 500 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:35,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 712 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 07:20:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-09 07:20:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 454. [2024-11-09 07:20:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 411 states have (on average 1.6569343065693432) internal successors, (681), 435 states have internal predecessors, (681), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-09 07:20:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 723 transitions. [2024-11-09 07:20:35,518 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 723 transitions. Word has length 18 [2024-11-09 07:20:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:35,519 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 723 transitions. [2024-11-09 07:20:35,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:20:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 723 transitions. [2024-11-09 07:20:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:20:35,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:35,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:35,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:35,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:35,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 07:20:36,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:36,124 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:36,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2061156200, now seen corresponding path program 1 times [2024-11-09 07:20:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:36,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697718321] [2024-11-09 07:20:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:36,126 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 [2024-11-09 07:20:36,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:36,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:36,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 07:20:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:36,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:20:36,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:36,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:36,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697718321] [2024-11-09 07:20:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697718321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:36,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:36,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 07:20:36,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171844888] [2024-11-09 07:20:36,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:36,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:36,271 INFO L87 Difference]: Start difference. First operand 454 states and 723 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 07:20:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:36,323 INFO L93 Difference]: Finished difference Result 651 states and 1033 transitions. [2024-11-09 07:20:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19 [2024-11-09 07:20:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:36,328 INFO L225 Difference]: With dead ends: 651 [2024-11-09 07:20:36,328 INFO L226 Difference]: Without dead ends: 651 [2024-11-09 07:20:36,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:36,329 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 56 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:36,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 119 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:20:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-09 07:20:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 635. [2024-11-09 07:20:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 583 states have (on average 1.6449399656946826) internal successors, (959), 609 states have internal predecessors, (959), 15 states have call successors, (15), 10 states have call predecessors, (15), 14 states have return successors, (57), 15 states have call predecessors, (57), 15 states have call successors, (57) [2024-11-09 07:20:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1031 transitions. [2024-11-09 07:20:36,360 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1031 transitions. Word has length 19 [2024-11-09 07:20:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:36,361 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 1031 transitions. [2024-11-09 07:20:36,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 07:20:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1031 transitions. [2024-11-09 07:20:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:20:36,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:36,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:36,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 07:20:36,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:36,563 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:36,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2061155944, now seen corresponding path program 1 times [2024-11-09 07:20:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652345898] [2024-11-09 07:20:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:36,564 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 [2024-11-09 07:20:36,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:36,566 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:36,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:36,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:20:36,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:36,767 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:36,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652345898] [2024-11-09 07:20:36,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652345898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:36,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:36,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:20:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041022764] [2024-11-09 07:20:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:36,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:36,770 INFO L87 Difference]: Start difference. First operand 635 states and 1031 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 07:20:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:36,848 INFO L93 Difference]: Finished difference Result 680 states and 1067 transitions. [2024-11-09 07:20:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19 [2024-11-09 07:20:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:36,853 INFO L225 Difference]: With dead ends: 680 [2024-11-09 07:20:36,853 INFO L226 Difference]: Without dead ends: 680 [2024-11-09 07:20:36,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:36,854 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:36,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 122 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:20:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-09 07:20:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 665. [2024-11-09 07:20:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 611 states have (on average 1.6333878887070377) internal successors, (998), 638 states have internal predecessors, (998), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-09 07:20:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1064 transitions. [2024-11-09 07:20:36,881 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1064 transitions. Word has length 19 [2024-11-09 07:20:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:36,882 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1064 transitions. [2024-11-09 07:20:36,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 07:20:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1064 transitions. [2024-11-09 07:20:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 07:20:36,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:36,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:36,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:37,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:37,087 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:37,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 528667313, now seen corresponding path program 1 times [2024-11-09 07:20:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480035497] [2024-11-09 07:20:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:37,088 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 [2024-11-09 07:20:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:37,090 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:37,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:37,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:20:37,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:37,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:37,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:37,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480035497] [2024-11-09 07:20:37,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480035497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:37,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:37,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 07:20:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502264174] [2024-11-09 07:20:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:37,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:37,295 INFO L87 Difference]: Start difference. First operand 665 states and 1064 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-09 07:20:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:37,371 INFO L93 Difference]: Finished difference Result 680 states and 1064 transitions. [2024-11-09 07:20:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 20 [2024-11-09 07:20:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:37,375 INFO L225 Difference]: With dead ends: 680 [2024-11-09 07:20:37,375 INFO L226 Difference]: Without dead ends: 680 [2024-11-09 07:20:37,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:37,376 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:37,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 123 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:20:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-09 07:20:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 665. [2024-11-09 07:20:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 611 states have (on average 1.6268412438625204) internal successors, (994), 638 states have internal predecessors, (994), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-09 07:20:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1060 transitions. [2024-11-09 07:20:37,400 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1060 transitions. Word has length 20 [2024-11-09 07:20:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:37,401 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1060 transitions. [2024-11-09 07:20:37,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-09 07:20:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1060 transitions. [2024-11-09 07:20:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:20:37,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:37,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:20:37,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:37,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:37,603 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:37,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1829306384, now seen corresponding path program 2 times [2024-11-09 07:20:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665439207] [2024-11-09 07:20:37,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:20:37,604 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 [2024-11-09 07:20:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:37,606 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:37,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 07:20:37,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:20:37,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:20:37,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:20:37,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:38,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:38,642 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665439207] [2024-11-09 07:20:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665439207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252561693] [2024-11-09 07:20:38,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:20:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:38,644 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:38,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 07:20:38,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:20:38,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:20:38,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:20:38,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:38,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252561693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084421628] [2024-11-09 07:20:38,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:20:38,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:38,954 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:38,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:20:39,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:20:39,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:20:39,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:20:39,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:39,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084421628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:39,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:20:39,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 16 [2024-11-09 07:20:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985483122] [2024-11-09 07:20:39,098 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:39,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:20:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:20:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:20:39,100 INFO L87 Difference]: Start difference. First operand 665 states and 1060 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 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) [2024-11-09 07:20:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:40,033 INFO L93 Difference]: Finished difference Result 513 states and 713 transitions. [2024-11-09 07:20:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:20:40,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 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 25 [2024-11-09 07:20:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:40,038 INFO L225 Difference]: With dead ends: 513 [2024-11-09 07:20:40,038 INFO L226 Difference]: Without dead ends: 513 [2024-11-09 07:20:40,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:20:40,039 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 224 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:40,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 492 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:20:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-09 07:20:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 480. [2024-11-09 07:20:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 426 states have (on average 1.4671361502347418) internal successors, (625), 453 states have internal predecessors, (625), 15 states have call successors, (15), 11 states have call predecessors, (15), 16 states have return successors, (51), 15 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-09 07:20:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 691 transitions. [2024-11-09 07:20:40,070 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 691 transitions. Word has length 25 [2024-11-09 07:20:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:40,070 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 691 transitions. [2024-11-09 07:20:40,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 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) [2024-11-09 07:20:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 691 transitions. [2024-11-09 07:20:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:20:40,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:40,074 INFO L215 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, 1] [2024-11-09 07:20:40,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 07:20:40,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-09 07:20:40,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:40,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:40,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:40,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1236752372, now seen corresponding path program 1 times [2024-11-09 07:20:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429668069] [2024-11-09 07:20:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:40,678 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 [2024-11-09 07:20:40,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:40,679 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:40,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 07:20:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:40,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:20:40,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:40,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:40,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429668069] [2024-11-09 07:20:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429668069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:20:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046868324] [2024-11-09 07:20:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:40,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:20:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:20:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:40,765 INFO L87 Difference]: Start difference. First operand 480 states and 691 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2024-11-09 07:20:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:40,776 INFO L93 Difference]: Finished difference Result 357 states and 502 transitions. [2024-11-09 07:20:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:20:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2024-11-09 07:20:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:40,780 INFO L225 Difference]: With dead ends: 357 [2024-11-09 07:20:40,780 INFO L226 Difference]: Without dead ends: 357 [2024-11-09 07:20:40,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:20:40,781 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:40,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 134 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:20:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-09 07:20:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-09 07:20:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 312 states have (on average 1.4743589743589745) internal successors, (460), 337 states have internal predecessors, (460), 11 states have call successors, (11), 8 states have call predecessors, (11), 11 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-09 07:20:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 502 transitions. [2024-11-09 07:20:40,794 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 502 transitions. Word has length 29 [2024-11-09 07:20:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:40,794 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 502 transitions. [2024-11-09 07:20:40,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2024-11-09 07:20:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 502 transitions. [2024-11-09 07:20:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 07:20:40,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:40,795 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:40,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:40,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:40,996 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:40,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash 132751987, now seen corresponding path program 1 times [2024-11-09 07:20:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100278735] [2024-11-09 07:20:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:40,997 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 [2024-11-09 07:20:40,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:41,001 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:41,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:41,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:20:41,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:41,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:20:41,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:41,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100278735] [2024-11-09 07:20:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100278735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:20:41,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:20:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:20:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912818854] [2024-11-09 07:20:41,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:20:41,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:20:41,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:20:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:41,311 INFO L87 Difference]: Start difference. First operand 357 states and 502 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2024-11-09 07:20:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:41,520 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2024-11-09 07:20:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:20:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 30 [2024-11-09 07:20:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:41,523 INFO L225 Difference]: With dead ends: 388 [2024-11-09 07:20:41,523 INFO L226 Difference]: Without dead ends: 388 [2024-11-09 07:20:41,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:20:41,527 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:41,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 213 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:20:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-09 07:20:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 375. [2024-11-09 07:20:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 330 states have (on average 1.4636363636363636) internal successors, (483), 355 states have internal predecessors, (483), 11 states have call successors, (11), 8 states have call predecessors, (11), 11 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-09 07:20:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 525 transitions. [2024-11-09 07:20:41,543 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 525 transitions. Word has length 30 [2024-11-09 07:20:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:41,544 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 525 transitions. [2024-11-09 07:20:41,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2024-11-09 07:20:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 525 transitions. [2024-11-09 07:20:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 07:20:41,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:41,549 INFO L215 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, 1, 1, 1] [2024-11-09 07:20:41,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:41,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:41,753 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:41,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 285621264, now seen corresponding path program 1 times [2024-11-09 07:20:41,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:41,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394537566] [2024-11-09 07:20:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:41,754 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 [2024-11-09 07:20:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:41,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:41,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 07:20:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:41,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:20:41,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:42,586 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 [2024-11-09 07:20:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:42,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:45,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394537566] [2024-11-09 07:20:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394537566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991284286] [2024-11-09 07:20:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:45,271 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:45,276 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:45,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 07:20:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:45,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:20:45,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:46,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:46,283 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 [2024-11-09 07:20:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:46,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:48,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991284286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:48,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065796589] [2024-11-09 07:20:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:48,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:48,696 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:48,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:20:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:48,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:20:48,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:49,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:49,509 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 [2024-11-09 07:20:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:49,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065796589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:51,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:20:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 7 [2024-11-09 07:20:51,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893505195] [2024-11-09 07:20:51,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:51,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:20:51,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:20:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2024-11-09 07:20:51,951 INFO L87 Difference]: Start difference. First operand 375 states and 525 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-09 07:20:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:53,436 INFO L93 Difference]: Finished difference Result 409 states and 549 transitions. [2024-11-09 07:20:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:20:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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 31 [2024-11-09 07:20:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:53,439 INFO L225 Difference]: With dead ends: 409 [2024-11-09 07:20:53,439 INFO L226 Difference]: Without dead ends: 409 [2024-11-09 07:20:53,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=152, Invalid=399, Unknown=1, NotChecked=0, Total=552 [2024-11-09 07:20:53,440 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 190 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:53,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 192 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:20:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-09 07:20:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 398. [2024-11-09 07:20:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 345 states have (on average 1.4289855072463769) internal successors, (493), 376 states have internal predecessors, (493), 12 states have call successors, (12), 9 states have call predecessors, (12), 18 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2024-11-09 07:20:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 547 transitions. [2024-11-09 07:20:53,460 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 547 transitions. Word has length 31 [2024-11-09 07:20:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:53,461 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 547 transitions. [2024-11-09 07:20:53,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-09 07:20:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 547 transitions. [2024-11-09 07:20:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:20:53,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:53,462 INFO L215 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, 1, 1, 1] [2024-11-09 07:20:53,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:53,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:53,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:54,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:54,063 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:54,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash 264324640, now seen corresponding path program 1 times [2024-11-09 07:20:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:54,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891333532] [2024-11-09 07:20:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:54,064 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 [2024-11-09 07:20:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:54,067 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:54,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:54,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:20:54,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:54,289 WARN L873 $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 [2024-11-09 07:20:54,349 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 07:20:54,349 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 [2024-11-09 07:20:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:54,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:54,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891333532] [2024-11-09 07:20:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891333532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1044161980] [2024-11-09 07:20:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:54,858 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:54,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-09 07:20:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:55,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:20:55,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:55,231 WARN L873 $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 [2024-11-09 07:20:55,398 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-09 07:20:55,398 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 [2024-11-09 07:20:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:55,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1044161980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874428633] [2024-11-09 07:20:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:55,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:55,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:55,932 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:55,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:20:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:56,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:20:56,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:56,214 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:20:56,215 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 [2024-11-09 07:20:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:56,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874428633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:20:56,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:20:56,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 12 [2024-11-09 07:20:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915409234] [2024-11-09 07:20:56,568 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:56,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:20:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:20:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:20:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2024-11-09 07:20:56,569 INFO L87 Difference]: Start difference. First operand 398 states and 547 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:20:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:57,395 INFO L93 Difference]: Finished difference Result 541 states and 695 transitions. [2024-11-09 07:20:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:20:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-09 07:20:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:57,399 INFO L225 Difference]: With dead ends: 541 [2024-11-09 07:20:57,399 INFO L226 Difference]: Without dead ends: 541 [2024-11-09 07:20:57,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 167 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=358, Unknown=2, NotChecked=86, Total=600 [2024-11-09 07:20:57,400 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 501 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:57,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 254 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 182 Invalid, 0 Unknown, 378 Unchecked, 0.5s Time] [2024-11-09 07:20:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-09 07:20:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 476. [2024-11-09 07:20:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 420 states have (on average 1.3714285714285714) internal successors, (576), 452 states have internal predecessors, (576), 12 states have call successors, (12), 11 states have call predecessors, (12), 21 states have return successors, (41), 12 states have call predecessors, (41), 12 states have call successors, (41) [2024-11-09 07:20:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 629 transitions. [2024-11-09 07:20:57,416 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 629 transitions. Word has length 32 [2024-11-09 07:20:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:57,417 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 629 transitions. [2024-11-09 07:20:57,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:20:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 629 transitions. [2024-11-09 07:20:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:20:57,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:57,418 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:57,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:57,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:57,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:58,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:58,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:20:58,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -395870702, now seen corresponding path program 1 times [2024-11-09 07:20:58,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:20:58,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706603905] [2024-11-09 07:20:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:58,029 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 [2024-11-09 07:20:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:20:58,032 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:20:58,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:20:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:58,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:20:58,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:58,273 WARN L873 $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 [2024-11-09 07:20:58,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:58,354 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 [2024-11-09 07:20:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:58,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:58,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:20:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706603905] [2024-11-09 07:20:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706603905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456405068] [2024-11-09 07:20:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:58,707 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:20:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:20:58,710 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:20:58,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-09 07:20:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:58,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:20:58,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:59,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:59,138 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 [2024-11-09 07:20:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:59,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:59,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456405068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:59,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846228069] [2024-11-09 07:20:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:59,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:59,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:59,472 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:59,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 07:20:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:59,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:20:59,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:59,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:20:59,847 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 [2024-11-09 07:20:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:59,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:00,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846228069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:00,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:21:00,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 07:21:00,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549960381] [2024-11-09 07:21:00,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:00,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:21:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:21:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2024-11-09 07:21:00,218 INFO L87 Difference]: Start difference. First operand 476 states and 629 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 5 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) [2024-11-09 07:21:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:01,257 INFO L93 Difference]: Finished difference Result 658 states and 814 transitions. [2024-11-09 07:21:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:21:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 5 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 [2024-11-09 07:21:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:01,260 INFO L225 Difference]: With dead ends: 658 [2024-11-09 07:21:01,261 INFO L226 Difference]: Without dead ends: 658 [2024-11-09 07:21:01,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=291, Unknown=1, NotChecked=38, Total=462 [2024-11-09 07:21:01,262 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 331 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:01,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 234 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 191 Invalid, 0 Unknown, 253 Unchecked, 0.6s Time] [2024-11-09 07:21:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-09 07:21:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 588. [2024-11-09 07:21:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 527 states have (on average 1.3776091081593929) internal successors, (726), 563 states have internal predecessors, (726), 12 states have call successors, (12), 12 states have call predecessors, (12), 26 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-09 07:21:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 774 transitions. [2024-11-09 07:21:01,282 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 774 transitions. Word has length 33 [2024-11-09 07:21:01,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:01,283 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 774 transitions. [2024-11-09 07:21:01,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 5 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) [2024-11-09 07:21:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 774 transitions. [2024-11-09 07:21:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 07:21:01,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:01,284 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-09 07:21:01,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:01,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-09 07:21:01,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:01,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:01,889 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:01,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1505194928, now seen corresponding path program 1 times [2024-11-09 07:21:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500024251] [2024-11-09 07:21:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:01,890 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 [2024-11-09 07:21:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:01,892 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:01,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (34)] Waiting until timeout for monitored process [2024-11-09 07:21:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:02,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:21:02,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:02,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:03,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500024251] [2024-11-09 07:21:03,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500024251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587554672] [2024-11-09 07:21:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:03,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:21:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:21:03,844 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:21:03,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-09 07:21:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:04,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:21:04,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:04,669 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 [2024-11-09 07:21:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 07:21:04,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:04,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587554672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:04,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626472898] [2024-11-09 07:21:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:04,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:04,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:04,955 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:04,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 07:21:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:05,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:21:05,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:05,639 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 07:21:05,639 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 16 treesize of output 17 [2024-11-09 07:21:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:21:05,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:05,883 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 [2024-11-09 07:21:06,524 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 30 treesize of output 26 [2024-11-09 07:21:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 07:21:06,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626472898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:06,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 07:21:06,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4, 5, 5] total 26 [2024-11-09 07:21:06,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255243021] [2024-11-09 07:21:06,665 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:06,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 07:21:06,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:06,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 07:21:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-09 07:21:06,668 INFO L87 Difference]: Start difference. First operand 588 states and 774 transitions. Second operand has 27 states, 27 states have (on average 5.814814814814815) internal successors, (157), 24 states have internal predecessors, (157), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:21:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:13,610 INFO L93 Difference]: Finished difference Result 530 states and 628 transitions. [2024-11-09 07:21:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 07:21:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.814814814814815) internal successors, (157), 24 states have internal predecessors, (157), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2024-11-09 07:21:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:13,614 INFO L225 Difference]: With dead ends: 530 [2024-11-09 07:21:13,614 INFO L226 Difference]: Without dead ends: 530 [2024-11-09 07:21:13,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=885, Invalid=3275, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 07:21:13,617 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 773 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:13,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 591 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 07:21:13,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-09 07:21:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 404. [2024-11-09 07:21:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 360 states have (on average 1.3611111111111112) internal successors, (490), 387 states have internal predecessors, (490), 8 states have call successors, (8), 8 states have call predecessors, (8), 15 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-09 07:21:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 515 transitions. [2024-11-09 07:21:13,631 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 515 transitions. Word has length 39 [2024-11-09 07:21:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:13,632 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 515 transitions. [2024-11-09 07:21:13,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.814814814814815) internal successors, (157), 24 states have internal predecessors, (157), 8 states have call successors, (8), 8 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:21:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 515 transitions. [2024-11-09 07:21:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 07:21:13,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:13,633 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:13,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:13,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (34)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:14,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-09 07:21:14,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:14,234 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr19ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:14,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash 621846898, now seen corresponding path program 1 times [2024-11-09 07:21:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:14,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965700290] [2024-11-09 07:21:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:14,236 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 [2024-11-09 07:21:14,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:14,240 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:14,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:14,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:21:14,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965700290] [2024-11-09 07:21:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965700290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141631999] [2024-11-09 07:21:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:14,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:21:14,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:21:14,571 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:21:14,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-09 07:21:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:14,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:21:14,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:14,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1141631999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487915755] [2024-11-09 07:21:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:14,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:14,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:14,996 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:14,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 07:21:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:15,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:21:15,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:15,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487915755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:15,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:21:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-09 07:21:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019442319] [2024-11-09 07:21:15,327 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:15,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:21:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:21:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:21:15,329 INFO L87 Difference]: Start difference. First operand 404 states and 515 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-09 07:21:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:15,383 INFO L93 Difference]: Finished difference Result 401 states and 504 transitions. [2024-11-09 07:21:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:21:15,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 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 42 [2024-11-09 07:21:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:15,386 INFO L225 Difference]: With dead ends: 401 [2024-11-09 07:21:15,386 INFO L226 Difference]: Without dead ends: 401 [2024-11-09 07:21:15,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:21:15,387 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 52 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:15,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 114 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:21:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-09 07:21:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2024-11-09 07:21:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 354 states have (on average 1.3305084745762712) internal successors, (471), 378 states have internal predecessors, (471), 8 states have call successors, (8), 8 states have call predecessors, (8), 15 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-09 07:21:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 496 transitions. [2024-11-09 07:21:15,401 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 496 transitions. Word has length 42 [2024-11-09 07:21:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:15,404 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 496 transitions. [2024-11-09 07:21:15,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-09 07:21:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 496 transitions. [2024-11-09 07:21:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 07:21:15,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:15,406 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:15,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:15,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-09 07:21:15,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:16,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:16,007 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr20ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:16,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2097384759, now seen corresponding path program 1 times [2024-11-09 07:21:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103379082] [2024-11-09 07:21:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:16,008 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 [2024-11-09 07:21:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:16,010 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:16,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Waiting until timeout for monitored process [2024-11-09 07:21:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:16,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:21:16,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:16,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:16,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103379082] [2024-11-09 07:21:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103379082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1941516970] [2024-11-09 07:21:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:21:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:21:16,653 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:21:16,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-09 07:21:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:16,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:21:16,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:16,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1941516970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754579718] [2024-11-09 07:21:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:17,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:17,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:17,048 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:17,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 07:21:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:17,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:21:17,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:17,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754579718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:17,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:21:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2024-11-09 07:21:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585172273] [2024-11-09 07:21:17,483 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:17,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:21:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:21:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:21:17,486 INFO L87 Difference]: Start difference. First operand 395 states and 496 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-09 07:21:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:17,813 INFO L93 Difference]: Finished difference Result 351 states and 420 transitions. [2024-11-09 07:21:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:21:17,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 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 [2024-11-09 07:21:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:17,816 INFO L225 Difference]: With dead ends: 351 [2024-11-09 07:21:17,816 INFO L226 Difference]: Without dead ends: 351 [2024-11-09 07:21:17,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:21:17,817 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 101 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:17,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 204 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:21:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-09 07:21:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 341. [2024-11-09 07:21:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 307 states have (on average 1.280130293159609) internal successors, (393), 326 states have internal predecessors, (393), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:21:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 413 transitions. [2024-11-09 07:21:17,827 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 413 transitions. Word has length 43 [2024-11-09 07:21:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:17,828 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 413 transitions. [2024-11-09 07:21:17,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-09 07:21:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 413 transitions. [2024-11-09 07:21:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 07:21:17,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:17,829 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:17,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:18,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:18,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-09 07:21:18,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:18,430 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr21ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:18,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash 594418196, now seen corresponding path program 1 times [2024-11-09 07:21:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212046394] [2024-11-09 07:21:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:18,431 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 [2024-11-09 07:21:18,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:18,433 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:18,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:21:18,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:18,577 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 [2024-11-09 07:21:18,682 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 07:21:18,682 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 [2024-11-09 07:21:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:18,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:18,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212046394] [2024-11-09 07:21:18,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212046394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1057482482] [2024-11-09 07:21:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:18,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:21:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:21:18,858 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:21:18,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-09 07:21:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:19,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:21:19,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:19,180 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 [2024-11-09 07:21:19,306 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 07:21:19,306 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 [2024-11-09 07:21:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:19,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1057482482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563769950] [2024-11-09 07:21:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:19,536 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:19,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-09 07:21:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:19,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:21:19,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:19,644 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 [2024-11-09 07:21:19,771 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:21:19,771 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 [2024-11-09 07:21:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:19,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563769950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:19,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:21:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-09 07:21:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912234845] [2024-11-09 07:21:19,997 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:19,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:21:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:21:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:21:19,999 INFO L87 Difference]: Start difference. First operand 341 states and 413 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-09 07:21:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:20,283 INFO L93 Difference]: Finished difference Result 353 states and 415 transitions. [2024-11-09 07:21:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:21:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 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 [2024-11-09 07:21:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:20,286 INFO L225 Difference]: With dead ends: 353 [2024-11-09 07:21:20,286 INFO L226 Difference]: Without dead ends: 353 [2024-11-09 07:21:20,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:21:20,287 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:20,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 147 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:21:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-09 07:21:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 341. [2024-11-09 07:21:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 307 states have (on average 1.267100977198697) internal successors, (389), 326 states have internal predecessors, (389), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:21:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 409 transitions. [2024-11-09 07:21:20,310 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 409 transitions. Word has length 44 [2024-11-09 07:21:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:20,310 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 409 transitions. [2024-11-09 07:21:20,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-11-09 07:21:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 409 transitions. [2024-11-09 07:21:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 07:21:20,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:20,313 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 07:21:20,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-09 07:21:20,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:20,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:20,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:20,914 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:20,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1415601562, now seen corresponding path program 1 times [2024-11-09 07:21:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097177650] [2024-11-09 07:21:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:20,915 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 [2024-11-09 07:21:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:20,917 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:20,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (46)] Waiting until timeout for monitored process [2024-11-09 07:21:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:21,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:21:21,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:21:21,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:21:21,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097177650] [2024-11-09 07:21:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097177650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:21:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:21:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:21:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895991621] [2024-11-09 07:21:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:21:21,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:21:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:21:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:21,052 INFO L87 Difference]: Start difference. First operand 341 states and 409 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 07:21:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:21,063 INFO L93 Difference]: Finished difference Result 313 states and 365 transitions. [2024-11-09 07:21:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:21:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 50 [2024-11-09 07:21:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:21,064 INFO L225 Difference]: With dead ends: 313 [2024-11-09 07:21:21,065 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 07:21:21,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:21:21,065 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:21,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:21:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 07:21:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-11-09 07:21:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 283 states have (on average 1.2190812720848057) internal successors, (345), 298 states have internal predecessors, (345), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:21:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 365 transitions. [2024-11-09 07:21:21,080 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 365 transitions. Word has length 50 [2024-11-09 07:21:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:21,080 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 365 transitions. [2024-11-09 07:21:21,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 07:21:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 365 transitions. [2024-11-09 07:21:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:21:21,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:21,081 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:21,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (46)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:21,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:21:21,282 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:21,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2144640200, now seen corresponding path program 1 times [2024-11-09 07:21:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098714150] [2024-11-09 07:21:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:21,284 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 [2024-11-09 07:21:21,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:21,285 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:21,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (47)] Waiting until timeout for monitored process [2024-11-09 07:21:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:21,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:21:21,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:21,675 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:21:21,675 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 [2024-11-09 07:21:22,516 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-09 07:21:22,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-09 07:21:22,803 INFO L349 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2024-11-09 07:21:22,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 78 [2024-11-09 07:21:22,873 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 07:21:22,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-11-09 07:21:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:22,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:23,080 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:23,080 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 66 treesize of output 63 [2024-11-09 07:21:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:28,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:21:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098714150] [2024-11-09 07:21:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098714150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [227796413] [2024-11-09 07:21:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:28,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:21:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:21:28,076 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:21:28,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-09 07:21:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:28,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:21:28,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:28,559 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:21:28,559 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 [2024-11-09 07:21:28,804 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:21:28,805 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 [2024-11-09 07:21:28,899 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 07:21:28,899 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 16 treesize of output 17 [2024-11-09 07:21:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:29,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:29,156 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:29,156 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 128 treesize of output 123 [2024-11-09 07:21:45,626 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:45,626 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 66 treesize of output 63 [2024-11-09 07:21:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [227796413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36380721] [2024-11-09 07:21:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:46,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:46,012 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 07:21:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:46,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:21:46,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:46,188 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:21:46,188 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 [2024-11-09 07:21:46,534 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:21:46,534 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 [2024-11-09 07:21:46,600 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 07:21:46,600 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 16 treesize of output 17 [2024-11-09 07:21:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:46,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:46,779 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:46,780 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 66 treesize of output 63 [2024-11-09 07:21:51,789 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:51,790 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 128 treesize of output 123 [2024-11-09 07:21:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36380721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:21:51,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:21:51,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 10, 7, 8] total 28 [2024-11-09 07:21:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770592554] [2024-11-09 07:21:51,970 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:51,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 07:21:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:21:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 07:21:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=644, Unknown=10, NotChecked=0, Total=812 [2024-11-09 07:21:51,972 INFO L87 Difference]: Start difference. First operand 313 states and 365 transitions. Second operand has 29 states, 27 states have (on average 6.777777777777778) internal successors, (183), 28 states have internal predecessors, (183), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:21:54,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:21:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:55,073 INFO L93 Difference]: Finished difference Result 323 states and 374 transitions. [2024-11-09 07:21:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:21:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 6.777777777777778) internal successors, (183), 28 states have internal predecessors, (183), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 54 [2024-11-09 07:21:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:55,075 INFO L225 Difference]: With dead ends: 323 [2024-11-09 07:21:55,075 INFO L226 Difference]: Without dead ends: 323 [2024-11-09 07:21:55,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 287 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=383, Invalid=1013, Unknown=10, NotChecked=0, Total=1406 [2024-11-09 07:21:55,076 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 246 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:55,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 123 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 179 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 07:21:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-09 07:21:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 312. [2024-11-09 07:21:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.2120141342756183) internal successors, (343), 297 states have internal predecessors, (343), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:21:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 363 transitions. [2024-11-09 07:21:55,084 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 363 transitions. Word has length 54 [2024-11-09 07:21:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:55,085 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 363 transitions. [2024-11-09 07:21:55,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 6.777777777777778) internal successors, (183), 28 states have internal predecessors, (183), 5 states have call successors, (10), 10 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:21:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 363 transitions. [2024-11-09 07:21:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:21:55,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:55,086 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:55,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-09 07:21:55,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (47)] Ended with exit code 0 [2024-11-09 07:21:55,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:55,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:55,687 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:21:55,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2144640201, now seen corresponding path program 1 times [2024-11-09 07:21:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:21:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127584306] [2024-11-09 07:21:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:55,688 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 [2024-11-09 07:21:55,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:21:55,689 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:21:55,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (50)] Waiting until timeout for monitored process [2024-11-09 07:21:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:55,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:21:55,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:56,152 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:21:56,152 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 [2024-11-09 07:21:56,396 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 [2024-11-09 07:21:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:56,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:56,760 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:21:56,763 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 22 treesize of output 18 [2024-11-09 07:21:59,354 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:21:59,354 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 15 treesize of output 14 [2024-11-09 07:22:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:22:00,754 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:22:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127584306] [2024-11-09 07:22:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127584306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1732998715] [2024-11-09 07:22:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:00,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:22:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:22:00,759 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:22:00,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2024-11-09 07:22:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:01,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 07:22:01,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:22:01,935 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 [2024-11-09 07:22:02,538 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:22:02,539 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 [2024-11-09 07:22:02,855 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 [2024-11-09 07:22:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:02,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:03,201 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:22:03,201 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 15 treesize of output 14 [2024-11-09 07:22:08,274 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:22:08,274 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 15 treesize of output 14 [2024-11-09 07:22:08,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1732998715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:08,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258754931] [2024-11-09 07:22:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:08,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:08,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:08,842 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:08,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-09 07:22:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:08,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:22:08,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:22:09,504 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 [2024-11-09 07:22:09,528 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:22:09,528 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 [2024-11-09 07:22:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:22:09,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:22:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258754931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:09,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:22:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7, 8] total 25 [2024-11-09 07:22:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407789253] [2024-11-09 07:22:09,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:09,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:22:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:22:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:22:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=676, Unknown=6, NotChecked=0, Total=870 [2024-11-09 07:22:09,669 INFO L87 Difference]: Start difference. First operand 312 states and 363 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:22:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:10,076 INFO L93 Difference]: Finished difference Result 323 states and 366 transitions. [2024-11-09 07:22:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:22:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2024-11-09 07:22:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:10,078 INFO L225 Difference]: With dead ends: 323 [2024-11-09 07:22:10,078 INFO L226 Difference]: Without dead ends: 323 [2024-11-09 07:22:10,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 206 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=206, Invalid=718, Unknown=6, NotChecked=0, Total=930 [2024-11-09 07:22:10,079 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 149 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:10,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 97 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:22:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-09 07:22:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 312. [2024-11-09 07:22:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.1943462897526502) internal successors, (338), 297 states have internal predecessors, (338), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:22:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 358 transitions. [2024-11-09 07:22:10,088 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 358 transitions. Word has length 54 [2024-11-09 07:22:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:10,089 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 358 transitions. [2024-11-09 07:22:10,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:22:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 358 transitions. [2024-11-09 07:22:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 07:22:10,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:10,090 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:10,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:10,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:10,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (50)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:10,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:22:10,691 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:22:10,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2059336742, now seen corresponding path program 1 times [2024-11-09 07:22:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:22:10,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220122092] [2024-11-09 07:22:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:10,692 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 [2024-11-09 07:22:10,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:22:10,694 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:22:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (53)] Waiting until timeout for monitored process [2024-11-09 07:22:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:10,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:22:10,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:11,415 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:22:11,416 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 [2024-11-09 07:22:12,933 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-09 07:22:12,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-09 07:22:13,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 25 treesize of output 20 [2024-11-09 07:22:13,231 INFO L349 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2024-11-09 07:22:13,232 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 5 case distinctions, treesize of input 35 treesize of output 1 [2024-11-09 07:22:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:13,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:14,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:22:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220122092] [2024-11-09 07:22:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220122092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1405655960] [2024-11-09 07:22:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:14,024 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:22:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:22:14,028 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:22:14,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-09 07:22:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:14,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:22:14,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:15,221 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-09 07:22:15,221 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 [2024-11-09 07:22:16,523 INFO L349 Elim1Store]: treesize reduction 102, result has 23.3 percent of original size [2024-11-09 07:22:16,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 101 [2024-11-09 07:22:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:17,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:21,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1405655960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:21,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316312472] [2024-11-09 07:22:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:21,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:21,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:21,608 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:21,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-09 07:22:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:21,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 07:22:21,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:22,211 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:22:22,212 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 [2024-11-09 07:22:22,949 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:22:22,949 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 [2024-11-09 07:22:23,078 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 07:22:23,079 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 16 treesize of output 17 [2024-11-09 07:22:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:23,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:23,523 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-09 07:22:23,523 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 98 treesize of output 91 [2024-11-09 07:22:26,324 INFO L349 Elim1Store]: treesize reduction 7, result has 82.1 percent of original size [2024-11-09 07:22:26,324 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 3 case distinctions, treesize of input 94 treesize of output 115 [2024-11-09 07:22:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316312472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:27,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 07:22:27,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12, 13] total 39 [2024-11-09 07:22:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822751548] [2024-11-09 07:22:27,309 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:27,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 07:22:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:22:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 07:22:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1577, Unknown=3, NotChecked=0, Total=1806 [2024-11-09 07:22:27,311 INFO L87 Difference]: Start difference. First operand 312 states and 358 transitions. Second operand has 41 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 33 states have internal predecessors, (141), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 07:22:31,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:22:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:32,405 INFO L93 Difference]: Finished difference Result 324 states and 367 transitions. [2024-11-09 07:22:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:22:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 33 states have internal predecessors, (141), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 55 [2024-11-09 07:22:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:32,408 INFO L225 Difference]: With dead ends: 324 [2024-11-09 07:22:32,408 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 07:22:32,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=584, Invalid=2493, Unknown=3, NotChecked=0, Total=3080 [2024-11-09 07:22:32,410 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 375 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:32,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 261 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 07:22:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 07:22:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 312. [2024-11-09 07:22:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.187279151943463) internal successors, (336), 297 states have internal predecessors, (336), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:22:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 356 transitions. [2024-11-09 07:22:32,419 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 356 transitions. Word has length 55 [2024-11-09 07:22:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:32,420 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 356 transitions. [2024-11-09 07:22:32,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.9166666666666665) internal successors, (141), 33 states have internal predecessors, (141), 7 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 07:22:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 356 transitions. [2024-11-09 07:22:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 07:22:32,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:32,422 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1] [2024-11-09 07:22:32,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (53)] Ended with exit code 0 [2024-11-09 07:22:32,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-09 07:22:32,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:33,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:22:33,023 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:22:33,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1859209281, now seen corresponding path program 1 times [2024-11-09 07:22:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:22:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545621878] [2024-11-09 07:22:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:33,024 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 [2024-11-09 07:22:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:22:33,028 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:22:33,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (56)] Waiting until timeout for monitored process [2024-11-09 07:22:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:33,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:22:33,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:33,306 WARN L873 $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 [2024-11-09 07:22:33,414 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:22:33,415 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 [2024-11-09 07:22:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 2 not checked. [2024-11-09 07:22:33,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:22:34,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:22:34,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545621878] [2024-11-09 07:22:34,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545621878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:34,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414635338] [2024-11-09 07:22:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:34,349 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:22:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:22:34,351 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:22:34,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2024-11-09 07:22:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:34,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 07:22:34,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:34,877 WARN L873 $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 [2024-11-09 07:22:34,968 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-09 07:22:34,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2024-11-09 07:22:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 2 not checked. [2024-11-09 07:22:35,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:22:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1414635338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992855463] [2024-11-09 07:22:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:35,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:35,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:35,876 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:35,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-09 07:22:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:36,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:22:36,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:36,210 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:22:36,211 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 [2024-11-09 07:22:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 2 not checked. [2024-11-09 07:22:36,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:22:36,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992855463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:22:36,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:22:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 12 [2024-11-09 07:22:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528032259] [2024-11-09 07:22:36,984 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:36,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:22:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:22:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:22:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2024-11-09 07:22:36,986 INFO L87 Difference]: Start difference. First operand 312 states and 356 transitions. Second operand has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:22:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:37,953 INFO L93 Difference]: Finished difference Result 324 states and 364 transitions. [2024-11-09 07:22:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:22:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-09 07:22:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:37,955 INFO L225 Difference]: With dead ends: 324 [2024-11-09 07:22:37,955 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 07:22:37,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 311 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=356, Unknown=4, NotChecked=86, Total=600 [2024-11-09 07:22:37,957 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 204 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:37,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 269 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 219 Invalid, 0 Unknown, 262 Unchecked, 0.6s Time] [2024-11-09 07:22:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 07:22:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 312. [2024-11-09 07:22:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.1802120141342756) internal successors, (334), 297 states have internal predecessors, (334), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 07:22:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 354 transitions. [2024-11-09 07:22:37,965 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 354 transitions. Word has length 56 [2024-11-09 07:22:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:37,966 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 354 transitions. [2024-11-09 07:22:37,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:22:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 354 transitions. [2024-11-09 07:22:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:22:37,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:37,967 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:37,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:38,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-09 07:22:38,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (56)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:38,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 07:22:38,568 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-09 07:22:38,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -957312920, now seen corresponding path program 1 times [2024-11-09 07:22:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:22:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663588484] [2024-11-09 07:22:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:38,569 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 [2024-11-09 07:22:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:22:38,573 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 07:22:38,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/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 (59)] Waiting until timeout for monitored process [2024-11-09 07:22:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:38,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:22:38,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:39,037 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 07:22:39,037 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 27 [2024-11-09 07:22:39,677 INFO L349 Elim1Store]: treesize reduction 44, result has 26.7 percent of original size [2024-11-09 07:22:39,678 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 5 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 07:22:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:39,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:42,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:22:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663588484] [2024-11-09 07:22:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663588484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438045531] [2024-11-09 07:22:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:42,201 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:22:42,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:22:42,202 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:22:42,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2024-11-09 07:22:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:42,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:22:42,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:43,393 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-09 07:22:43,393 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 [2024-11-09 07:22:47,769 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| (select |c_#valid| |c_old(~global~0.base)|)))) is different from true [2024-11-09 07:22:47,925 INFO L349 Elim1Store]: treesize reduction 46, result has 36.1 percent of original size [2024-11-09 07:22:47,925 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 3 case distinctions, treesize of input 26 treesize of output 36 [2024-11-09 07:22:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-09 07:22:48,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:48,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438045531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108001138] [2024-11-09 07:22:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:48,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:48,419 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:48,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25e8a08-f67e-4dea-9cbd-5974b7651f18/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-09 07:22:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:48,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:22:48,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:48,685 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 07:22:48,686 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 [2024-11-09 07:22:49,214 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-09 07:22:49,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-09 07:22:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:49,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108001138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:54,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:22:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-09 07:22:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003875641] [2024-11-09 07:22:54,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:54,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 07:22:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:22:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 07:22:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=507, Unknown=6, NotChecked=46, Total=650 [2024-11-09 07:22:54,250 INFO L87 Difference]: Start difference. First operand 312 states and 354 transitions. Second operand has 21 states, 17 states have (on average 4.588235294117647) internal successors, (78), 15 states have internal predecessors, (78), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:23:00,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:02,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:04,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:06,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:08,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:10,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:12,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:14,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:16,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:18,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:20,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:22,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:24,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:26,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:28,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:30,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:32,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:34,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:36,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:38,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:40,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:42,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:44,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:46,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:48,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:50,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:52,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:54,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:56,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:23:58,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:00,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:02,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:05,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:07,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:09,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:11,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:13,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:19,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:21,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:23,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:25,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:27,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:29,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:31,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:33,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:35,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:37,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:39,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:41,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:43,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:45,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:47,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:49,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:51,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:53,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:55,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:57,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:24:59,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:01,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:03,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:05,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:07,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:09,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:11,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:13,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:15,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:17,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:19,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:21,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:23,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:25,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:36,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:38,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:40,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:42,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:44,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:46,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:48,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:50,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:52,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:54,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:25:56,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:12,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:14,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:16,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:18,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:28,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:30,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:38,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:40,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:42,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:44,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:54,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:56,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:26:58,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:00,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:02,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:04,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:06,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:17,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:19,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:21,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:23,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:25,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:27,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:29,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:31,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:33,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:35,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:37,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:39,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:41,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:43,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:45,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:47,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:49,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:51,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:53,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:55,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:57,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:59,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:01,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:03,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:05,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:07,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:09,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:11,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:13,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:15,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:17,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:19,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]