./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/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 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:28:44,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:28:44,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 06:28:44,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:28:44,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:28:44,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:28:44,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:28:44,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:28:44,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:28:44,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:28:44,564 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:28:44,566 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:28:44,566 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:28:44,568 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:28:44,569 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:28:44,569 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:28:44,570 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:28:44,574 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:28:44,575 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:28:44,576 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:28:44,576 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:28:44,580 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:28:44,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:28:44,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:28:44,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:28:44,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:28:44,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:28:44,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:28:44,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:28:44,584 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:28:44,585 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:28:44,585 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:28:44,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:28:44,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:28:44,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:28:44,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:28:44,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:28:44,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:28:44,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:28:44,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:28:44,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:28:44,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:44,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:28:44,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:28:44,593 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:28:44,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:28:44,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:28:44,594 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:28:44,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:28:44,595 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_dcfe783e-7d36-41e2-8c23-86584cb96877/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2024-11-09 06:28:44,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:28:44,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:28:44,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:28:44,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:28:44,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:28:44,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i Unable to find full path for "g++" [2024-11-09 06:28:47,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:28:48,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:28:48,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2024-11-09 06:28:48,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/49f381b53/3fdfba52eb5a4499ae8af314f86a2ca4/FLAG520dde2ab [2024-11-09 06:28:48,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/49f381b53/3fdfba52eb5a4499ae8af314f86a2ca4 [2024-11-09 06:28:48,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:28:48,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:28:48,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:48,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:28:48,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:28:48,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:48" (1/1) ... [2024-11-09 06:28:48,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@951713c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:48, skipping insertion in model container [2024-11-09 06:28:48,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:48" (1/1) ... [2024-11-09 06:28:48,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:28:48,974 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 06:28:48,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:49,014 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:28:49,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:28:49,145 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:28:49,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49 WrapperNode [2024-11-09 06:28:49,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:28:49,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:49,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:28:49,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:28:49,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,228 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 94 [2024-11-09 06:28:49,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:28:49,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:28:49,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:28:49,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:28:49,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:28:49,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:28:49,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:28:49,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:28:49,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (1/1) ... [2024-11-09 06:28:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:28:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:49,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:28:49,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:28:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:28:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-09 06:28:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-09 06:28:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:28:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:28:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:28:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:28:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:28:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:28:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:28:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:28:49,640 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:28:49,644 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:28:50,147 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-09 06:28:50,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:28:50,238 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:28:50,238 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:28:50,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:50 BoogieIcfgContainer [2024-11-09 06:28:50,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:28:50,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:28:50,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:28:50,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:28:50,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:48" (1/3) ... [2024-11-09 06:28:50,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f704f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:50, skipping insertion in model container [2024-11-09 06:28:50,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:49" (2/3) ... [2024-11-09 06:28:50,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f704f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:50, skipping insertion in model container [2024-11-09 06:28:50,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:50" (3/3) ... [2024-11-09 06:28:50,252 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2024-11-09 06:28:50,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:28:50,279 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-09 06:28:50,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:28:50,350 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;@1dc00f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:28:50,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-09 06:28:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 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 06:28:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 06:28:50,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:50,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 06:28:50,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:50,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -192682880, now seen corresponding path program 1 times [2024-11-09 06:28:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:50,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350852254] [2024-11-09 06:28:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:50,893 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 06:28:50,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350852254] [2024-11-09 06:28:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350852254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:50,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:50,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:28:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804463659] [2024-11-09 06:28:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:50,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:28:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:28:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:28:50,956 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 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 06:28:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:51,244 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2024-11-09 06:28:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:28:51,248 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 06:28:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:51,265 INFO L225 Difference]: With dead ends: 112 [2024-11-09 06:28:51,265 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 06:28:51,269 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 06:28:51,275 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 92 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:51,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 108 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:28:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 06:28:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2024-11-09 06:28:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.690909090909091) internal successors, (93), 72 states have internal predecessors, (93), 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 06:28:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2024-11-09 06:28:51,361 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 6 [2024-11-09 06:28:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:51,362 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2024-11-09 06:28:51,362 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 06:28:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2024-11-09 06:28:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 06:28:51,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:51,363 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 06:28:51,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:28:51,364 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:51,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash -192682879, now seen corresponding path program 1 times [2024-11-09 06:28:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88122349] [2024-11-09 06:28:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:51,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:51,698 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 06:28:51,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88122349] [2024-11-09 06:28:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88122349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:51,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:28:51,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157908274] [2024-11-09 06:28:51,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:51,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:28:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:28:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:28:51,707 INFO L87 Difference]: Start difference. First operand 82 states and 111 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 06:28:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:51,956 INFO L93 Difference]: Finished difference Result 186 states and 251 transitions. [2024-11-09 06:28:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:28:51,958 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 06:28:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:51,960 INFO L225 Difference]: With dead ends: 186 [2024-11-09 06:28:51,961 INFO L226 Difference]: Without dead ends: 186 [2024-11-09 06:28:51,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:28:51,966 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 158 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 126 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 06:28:51,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 126 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:28:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-09 06:28:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 160. [2024-11-09 06:28:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 143 states have internal predecessors, (211), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-09 06:28:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 247 transitions. [2024-11-09 06:28:52,034 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 247 transitions. Word has length 6 [2024-11-09 06:28:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:52,039 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 247 transitions. [2024-11-09 06:28:52,039 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 06:28:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 247 transitions. [2024-11-09 06:28:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:28:52,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:52,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:52,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:28:52,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:52,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1678202002, now seen corresponding path program 1 times [2024-11-09 06:28:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540067558] [2024-11-09 06:28:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:52,512 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 06:28:52,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540067558] [2024-11-09 06:28:52,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540067558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:52,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:52,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:28:52,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137048554] [2024-11-09 06:28:52,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:52,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:28:52,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:28:52,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:28:52,516 INFO L87 Difference]: Start difference. First operand 160 states and 247 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 06:28:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:52,844 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2024-11-09 06:28:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:28:52,845 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 06:28:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:52,848 INFO L225 Difference]: With dead ends: 206 [2024-11-09 06:28:52,848 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 06:28:52,852 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 06:28:52,854 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:52,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 145 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:28:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 06:28:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2024-11-09 06:28:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.6538461538461537) internal successors, (215), 147 states have internal predecessors, (215), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-09 06:28:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 251 transitions. [2024-11-09 06:28:52,897 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 251 transitions. Word has length 7 [2024-11-09 06:28:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:52,898 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 251 transitions. [2024-11-09 06:28:52,899 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 06:28:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 251 transitions. [2024-11-09 06:28:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 06:28:52,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:52,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:52,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:28:52,900 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:52,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash -484654464, now seen corresponding path program 1 times [2024-11-09 06:28:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:52,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155601578] [2024-11-09 06:28:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:53,402 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 06:28:53,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155601578] [2024-11-09 06:28:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155601578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:53,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:53,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:28:53,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525254216] [2024-11-09 06:28:53,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:53,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:28:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:53,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:28:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:28:53,409 INFO L87 Difference]: Start difference. First operand 164 states and 251 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 06:28:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:53,685 INFO L93 Difference]: Finished difference Result 189 states and 253 transitions. [2024-11-09 06:28:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:28:53,688 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 06:28:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:53,690 INFO L225 Difference]: With dead ends: 189 [2024-11-09 06:28:53,690 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 06:28:53,691 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 06:28:53,694 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 87 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 167 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 06:28:53,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 167 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:28:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 06:28:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 164. [2024-11-09 06:28:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.6384615384615384) internal successors, (213), 147 states have internal predecessors, (213), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-09 06:28:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 249 transitions. [2024-11-09 06:28:53,729 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 249 transitions. Word has length 8 [2024-11-09 06:28:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:53,730 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 249 transitions. [2024-11-09 06:28:53,730 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 06:28:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 249 transitions. [2024-11-09 06:28:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:28:53,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:53,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:53,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:28:53,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:53,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2139386448, now seen corresponding path program 1 times [2024-11-09 06:28:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971389515] [2024-11-09 06:28:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:53,888 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 06:28:53,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971389515] [2024-11-09 06:28:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971389515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:53,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:53,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:28:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950486001] [2024-11-09 06:28:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:53,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:28:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:28:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:28:53,894 INFO L87 Difference]: Start difference. First operand 164 states and 249 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 06:28:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:54,090 INFO L93 Difference]: Finished difference Result 244 states and 336 transitions. [2024-11-09 06:28:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:28:54,091 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 06:28:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:54,094 INFO L225 Difference]: With dead ends: 244 [2024-11-09 06:28:54,094 INFO L226 Difference]: Without dead ends: 244 [2024-11-09 06:28:54,095 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 06:28:54,096 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 117 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:54,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 167 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:28:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-09 06:28:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 195. [2024-11-09 06:28:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.610062893081761) internal successors, (256), 177 states have internal predecessors, (256), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-09 06:28:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 292 transitions. [2024-11-09 06:28:54,120 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 292 transitions. Word has length 9 [2024-11-09 06:28:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:54,120 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 292 transitions. [2024-11-09 06:28:54,121 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 06:28:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 292 transitions. [2024-11-09 06:28:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:28:54,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:54,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:54,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:28:54,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:54,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1896470398, now seen corresponding path program 1 times [2024-11-09 06:28:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153577974] [2024-11-09 06:28:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:54,283 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 06:28:54,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153577974] [2024-11-09 06:28:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153577974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:28:54,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:28:54,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:28:54,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005423216] [2024-11-09 06:28:54,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:28:54,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:28:54,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:28:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:28:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:28:54,291 INFO L87 Difference]: Start difference. First operand 195 states and 292 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 06:28:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:28:54,468 INFO L93 Difference]: Finished difference Result 243 states and 315 transitions. [2024-11-09 06:28:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:28:54,470 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 06:28:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:28:54,472 INFO L225 Difference]: With dead ends: 243 [2024-11-09 06:28:54,472 INFO L226 Difference]: Without dead ends: 243 [2024-11-09 06:28:54,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 06:28:54,474 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 190 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:28:54,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 182 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:28:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-09 06:28:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 209. [2024-11-09 06:28:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 172 states have (on average 1.6104651162790697) internal successors, (277), 191 states have internal predecessors, (277), 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 06:28:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 313 transitions. [2024-11-09 06:28:54,504 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 313 transitions. Word has length 10 [2024-11-09 06:28:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:28:54,504 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 313 transitions. [2024-11-09 06:28:54,508 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 06:28:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 313 transitions. [2024-11-09 06:28:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:28:54,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:28:54,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:28:54,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:28:54,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:28:54,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:28:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2132409374, now seen corresponding path program 1 times [2024-11-09 06:28:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:28:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755596651] [2024-11-09 06:28:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:28:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:54,814 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 06:28:54,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:28:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755596651] [2024-11-09 06:28:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755596651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:28:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541006011] [2024-11-09 06:28:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:28:54,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:28:54,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:28:54,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:28:54,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:28:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:54,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:28:54,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:28:55,341 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 06:28:55,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:55,592 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 06:28:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541006011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:28:55,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765826607] [2024-11-09 06:28:55,620 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 06:28:55,621 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:28:55,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:28:55,636 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:28:55,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:28:55,995 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 135 for LOIs [2024-11-09 06:29:02,487 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [765826607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:29:09,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:29:09,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 3, 3] total 16 [2024-11-09 06:29:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830681163] [2024-11-09 06:29:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:29:09,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:29:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:29:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:29:09,936 INFO L87 Difference]: Start difference. First operand 209 states and 313 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 06:29:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:10,775 INFO L93 Difference]: Finished difference Result 203 states and 291 transitions. [2024-11-09 06:29:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:29:10,776 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 06:29:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:10,778 INFO L225 Difference]: With dead ends: 203 [2024-11-09 06:29:10,778 INFO L226 Difference]: Without dead ends: 203 [2024-11-09 06:29:10,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:29:10,780 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:10,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:29:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-09 06:29:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2024-11-09 06:29:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 156 states have (on average 1.5576923076923077) internal successors, (243), 175 states have internal predecessors, (243), 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 06:29:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 279 transitions. [2024-11-09 06:29:10,793 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 279 transitions. Word has length 15 [2024-11-09 06:29:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:10,794 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 279 transitions. [2024-11-09 06:29:10,794 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 06:29:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 279 transitions. [2024-11-09 06:29:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:29:10,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:10,796 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] [2024-11-09 06:29:10,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:29:11,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 06:29:11,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:29:11,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 870842195, now seen corresponding path program 1 times [2024-11-09 06:29:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:11,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690064413] [2024-11-09 06:29:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:11,472 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 06:29:11,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690064413] [2024-11-09 06:29:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690064413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932099481] [2024-11-09 06:29:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:11,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:11,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:11,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:11,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:29:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:11,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:29:11,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:11,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:29:11,978 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 06:29:12,083 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 06:29:12,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932099481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164881334] [2024-11-09 06:29:12,305 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 06:29:12,305 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:12,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:12,306 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:12,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:13,040 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 06:29:15,130 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:29,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2855#(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 06:29:29,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:29,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:29:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2024-11-09 06:29:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517204751] [2024-11-09 06:29:29,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:29,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:29:29,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:29:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=742, Unknown=3, NotChecked=0, Total=930 [2024-11-09 06:29:29,217 INFO L87 Difference]: Start difference. First operand 193 states and 279 transitions. Second operand has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 06:29:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:30,301 INFO L93 Difference]: Finished difference Result 311 states and 413 transitions. [2024-11-09 06:29:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:29:30,302 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 23 [2024-11-09 06:29:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:30,304 INFO L225 Difference]: With dead ends: 311 [2024-11-09 06:29:30,308 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 06:29:30,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=384, Invalid=1593, Unknown=3, NotChecked=0, Total=1980 [2024-11-09 06:29:30,311 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 601 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:30,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 178 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:29:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 06:29:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 259. [2024-11-09 06:29:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 217 states have (on average 1.566820276497696) internal successors, (340), 239 states have internal predecessors, (340), 11 states have call successors, (11), 8 states have call predecessors, (11), 13 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 06:29:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 387 transitions. [2024-11-09 06:29:30,343 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 387 transitions. Word has length 23 [2024-11-09 06:29:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:30,344 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 387 transitions. [2024-11-09 06:29:30,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 06:29:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 387 transitions. [2024-11-09 06:29:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 06:29:30,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:30,345 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 06:29:30,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:29:30,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:30,552 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:29:30,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -36829130, now seen corresponding path program 1 times [2024-11-09 06:29:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989861434] [2024-11-09 06:29:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:30,616 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 06:29:30,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:30,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989861434] [2024-11-09 06:29:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989861434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326163143] [2024-11-09 06:29:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:30,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:30,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:30,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:30,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:29:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:30,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:29:30,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:30,764 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 06:29:30,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:30,811 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 06:29:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326163143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:29:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1634575433] [2024-11-09 06:29:30,815 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-09 06:29:30,815 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:30,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:30,816 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:30,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:31,863 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 17 for LOIs [2024-11-09 06:29:32,313 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:34,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3610#(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 06:29:34,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:34,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:29:34,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-09 06:29:34,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87092666] [2024-11-09 06:29:34,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:34,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:29:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:29:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:29:34,940 INFO L87 Difference]: Start difference. First operand 259 states and 387 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 06:29:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:35,012 INFO L93 Difference]: Finished difference Result 285 states and 406 transitions. [2024-11-09 06:29:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:29:35,013 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 06:29:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:35,015 INFO L225 Difference]: With dead ends: 285 [2024-11-09 06:29:35,015 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 06:29:35,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:29:35,017 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:35,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 168 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:29:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 06:29:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2024-11-09 06:29:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 238 states have (on average 1.504201680672269) internal successors, (358), 260 states have internal predecessors, (358), 11 states have call successors, (11), 8 states have call predecessors, (11), 13 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 06:29:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 405 transitions. [2024-11-09 06:29:35,033 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 405 transitions. Word has length 24 [2024-11-09 06:29:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:35,034 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 405 transitions. [2024-11-09 06:29:35,034 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 06:29:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 405 transitions. [2024-11-09 06:29:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 06:29:35,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:35,036 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] [2024-11-09 06:29:35,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:29:35,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 06:29:35,237 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:29:35,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -639274798, now seen corresponding path program 1 times [2024-11-09 06:29:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628765566] [2024-11-09 06:29:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:36,183 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 06:29:36,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628765566] [2024-11-09 06:29:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628765566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988595158] [2024-11-09 06:29:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:36,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:36,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:36,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:29:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:36,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:29:36,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:36,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:29:36,707 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 06:29:36,906 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 06:29:36,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:37,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988595158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:37,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607775820] [2024-11-09 06:29:37,195 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 06:29:37,196 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:37,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:37,196 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:37,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:37,707 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 06:29:39,170 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:53,382 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4305#(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 06:29:53,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:53,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:29:53,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2024-11-09 06:29:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874550271] [2024-11-09 06:29:53,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:53,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 06:29:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 06:29:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 06:29:53,386 INFO L87 Difference]: Start difference. First operand 280 states and 405 transitions. Second operand has 19 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 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 06:29:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:55,238 INFO L93 Difference]: Finished difference Result 317 states and 413 transitions. [2024-11-09 06:29:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:29:55,239 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 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 25 [2024-11-09 06:29:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:55,241 INFO L225 Difference]: With dead ends: 317 [2024-11-09 06:29:55,241 INFO L226 Difference]: Without dead ends: 317 [2024-11-09 06:29:55,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 06:29:55,247 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 690 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:55,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 492 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:29:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-09 06:29:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 282. [2024-11-09 06:29:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 240 states have (on average 1.4875) internal successors, (357), 262 states have internal predecessors, (357), 11 states have call successors, (11), 8 states have call predecessors, (11), 13 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 06:29:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 404 transitions. [2024-11-09 06:29:55,267 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 404 transitions. Word has length 25 [2024-11-09 06:29:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:55,269 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 404 transitions. [2024-11-09 06:29:55,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 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 06:29:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 404 transitions. [2024-11-09 06:29:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 06:29:55,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:55,271 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] [2024-11-09 06:29:55,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:29:55,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:29:55,472 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:29:55,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1657317790, now seen corresponding path program 1 times [2024-11-09 06:29:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953850001] [2024-11-09 06:29:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:55,682 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 06:29:55,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953850001] [2024-11-09 06:29:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953850001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972805014] [2024-11-09 06:29:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:55,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:55,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:55,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:29:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:55,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:29:55,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:55,894 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:29:55,895 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 06:29:55,943 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 06:29:55,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:56,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972805014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1432140821] [2024-11-09 06:29:56,028 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 06:29:56,029 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:56,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:56,029 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:56,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:56,523 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 06:29:57,977 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:11,151 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5065#(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 06:30:11,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:11,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:30:11,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-09 06:30:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586584779] [2024-11-09 06:30:11,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:11,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:30:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:30:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2024-11-09 06:30:11,154 INFO L87 Difference]: Start difference. First operand 282 states and 404 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:30:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:11,648 INFO L93 Difference]: Finished difference Result 404 states and 545 transitions. [2024-11-09 06:30:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:30:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-09 06:30:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:11,652 INFO L225 Difference]: With dead ends: 404 [2024-11-09 06:30:11,653 INFO L226 Difference]: Without dead ends: 404 [2024-11-09 06:30:11,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:30:11,654 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 263 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:11,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 269 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:30:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-09 06:30:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 345. [2024-11-09 06:30:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 300 states have (on average 1.46) internal successors, (438), 323 states have internal predecessors, (438), 11 states have call successors, (11), 10 states have call predecessors, (11), 16 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 06:30:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 485 transitions. [2024-11-09 06:30:11,671 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 485 transitions. Word has length 26 [2024-11-09 06:30:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:11,672 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 485 transitions. [2024-11-09 06:30:11,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:30:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 485 transitions. [2024-11-09 06:30:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:30:11,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:11,675 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] [2024-11-09 06:30:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:30:11,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 06:30:11,876 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:11,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash -162756012, now seen corresponding path program 1 times [2024-11-09 06:30:11,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:11,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7484380] [2024-11-09 06:30:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:11,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:12,140 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 06:30:12,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:12,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7484380] [2024-11-09 06:30:12,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7484380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906833954] [2024-11-09 06:30:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:12,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:12,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:30:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:12,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 06:30:12,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:30:12,376 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 06:30:12,472 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 06:30:12,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906833954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [922186952] [2024-11-09 06:30:12,649 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 06:30:12,649 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:12,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:12,650 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:12,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:13,159 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 145 for LOIs [2024-11-09 06:30:14,573 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:27,574 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5970#(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 06:30:27,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:27,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:30:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-11-09 06:30:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952859386] [2024-11-09 06:30:27,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:27,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:30:27,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:30:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2024-11-09 06:30:27,577 INFO L87 Difference]: Start difference. First operand 345 states and 485 transitions. Second operand has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:30:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:28,232 INFO L93 Difference]: Finished difference Result 515 states and 687 transitions. [2024-11-09 06:30:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:30:28,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 06:30:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:28,238 INFO L225 Difference]: With dead ends: 515 [2024-11-09 06:30:28,238 INFO L226 Difference]: Without dead ends: 515 [2024-11-09 06:30:28,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 06:30:28,241 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 521 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:28,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 249 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:30:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-09 06:30:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 314. [2024-11-09 06:30:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 274 states have (on average 1.467153284671533) internal successors, (402), 299 states have internal predecessors, (402), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-09 06:30:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 428 transitions. [2024-11-09 06:30:28,266 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 428 transitions. Word has length 27 [2024-11-09 06:30:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:28,267 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 428 transitions. [2024-11-09 06:30:28,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:30:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 428 transitions. [2024-11-09 06:30:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:30:28,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:28,272 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 06:30:28,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:30:28,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 06:30:28,474 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:28,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -351136839, now seen corresponding path program 1 times [2024-11-09 06:30:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091132480] [2024-11-09 06:30:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:28,709 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 06:30:28,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091132480] [2024-11-09 06:30:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091132480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287392169] [2024-11-09 06:30:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:28,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:28,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:28,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:30:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:28,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:30:28,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:28,961 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 06:30:28,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:30:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287392169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:28,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:30:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-09 06:30:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279915072] [2024-11-09 06:30:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:28,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:30:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:30:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:30:28,964 INFO L87 Difference]: Start difference. First operand 314 states and 428 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 06:30:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:29,037 INFO L93 Difference]: Finished difference Result 324 states and 436 transitions. [2024-11-09 06:30:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:30:29,038 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 06:30:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:29,039 INFO L225 Difference]: With dead ends: 324 [2024-11-09 06:30:29,040 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 06:30:29,040 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 06:30:29,041 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 125 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 06:30:29,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 125 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:30:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 06:30:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 318. [2024-11-09 06:30:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 278 states have (on average 1.460431654676259) internal successors, (406), 303 states have internal predecessors, (406), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-09 06:30:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 432 transitions. [2024-11-09 06:30:29,054 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 432 transitions. Word has length 28 [2024-11-09 06:30:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:29,054 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 432 transitions. [2024-11-09 06:30:29,054 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 06:30:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 432 transitions. [2024-11-09 06:30:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 06:30:29,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:29,056 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] [2024-11-09 06:30:29,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:30:29,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 06:30:29,260 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:29,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash 733869392, now seen corresponding path program 1 times [2024-11-09 06:30:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76146724] [2024-11-09 06:30:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:29,587 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 06:30:29,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:29,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76146724] [2024-11-09 06:30:29,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76146724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:29,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182227040] [2024-11-09 06:30:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:29,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:29,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:29,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:29,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:30:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:29,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 06:30:29,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:30:29,997 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 06:30:30,184 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 06:30:30,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182227040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178488030] [2024-11-09 06:30:30,441 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 06:30:30,441 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:30,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:30,442 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:30,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:31,575 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-09 06:30:32,310 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:38,033 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7723#(exists ((|v_parse_input_~i~0#1_84| Int)) (and (or (and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (= |v_parse_input_~i~0#1_84| 0) (<= 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)|) (<= ~state~0 1) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0)) (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)|) (= |v_parse_input_~i~0#1_84| 1) (<= ~state~0 1) (<= |parse_input_~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0))) (or (and (= |v_parse_input_~i~0#1_84| 0) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|)) (and (<= 4 (select |#length| 6)) (= (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))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (<= 1 (select |#length| |parse_input_~input#1.base|)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))) (<= (select |#length| |~#commands~0.base|) (+ (* |v_parse_input_~i~0#1_84| 9) |~#commands~0.offset| 3))))' at error location [2024-11-09 06:30:38,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:38,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:30:38,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2024-11-09 06:30:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544551609] [2024-11-09 06:30:38,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:38,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:30:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:30:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 06:30:38,037 INFO L87 Difference]: Start difference. First operand 318 states and 432 transitions. Second operand has 16 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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 06:30:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:38,745 INFO L93 Difference]: Finished difference Result 326 states and 422 transitions. [2024-11-09 06:30:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:30:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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 32 [2024-11-09 06:30:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:38,747 INFO L225 Difference]: With dead ends: 326 [2024-11-09 06:30:38,747 INFO L226 Difference]: Without dead ends: 326 [2024-11-09 06:30:38,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=272, Invalid=1620, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 06:30:38,753 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 358 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:38,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 222 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:30:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-09 06:30:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 315. [2024-11-09 06:30:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 278 states have (on average 1.39568345323741) internal successors, (388), 300 states have internal predecessors, (388), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-09 06:30:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 414 transitions. [2024-11-09 06:30:38,778 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 414 transitions. Word has length 32 [2024-11-09 06:30:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:38,779 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 414 transitions. [2024-11-09 06:30:38,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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 06:30:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 414 transitions. [2024-11-09 06:30:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:30:38,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:38,781 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] [2024-11-09 06:30:38,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:30:38,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 06:30:38,982 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:38,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1275114623, now seen corresponding path program 1 times [2024-11-09 06:30:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317662378] [2024-11-09 06:30:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:39,374 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 06:30:39,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317662378] [2024-11-09 06:30:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317662378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671301693] [2024-11-09 06:30:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:39,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:39,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:39,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:39,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:30:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:39,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 06:30:39,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:39,794 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:30:39,794 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 06:30:40,032 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 06:30:40,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671301693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [812713214] [2024-11-09 06:30:40,173 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 06:30:40,173 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:40,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:40,174 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:40,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:41,299 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-09 06:30:41,820 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:47,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8560#(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 06:30:47,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:47,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:30:47,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2024-11-09 06:30:47,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668938934] [2024-11-09 06:30:47,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:47,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:30:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:30:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:30:47,072 INFO L87 Difference]: Start difference. First operand 315 states and 414 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:30:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:47,764 INFO L93 Difference]: Finished difference Result 383 states and 494 transitions. [2024-11-09 06:30:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:30:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-09 06:30:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:47,767 INFO L225 Difference]: With dead ends: 383 [2024-11-09 06:30:47,767 INFO L226 Difference]: Without dead ends: 383 [2024-11-09 06:30:47,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 06:30:47,769 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 216 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:47,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 286 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:30:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-09 06:30:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 348. [2024-11-09 06:30:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 309 states have (on average 1.3818770226537216) internal successors, (427), 331 states have internal predecessors, (427), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-09 06:30:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 456 transitions. [2024-11-09 06:30:47,783 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 456 transitions. Word has length 33 [2024-11-09 06:30:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:47,783 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 456 transitions. [2024-11-09 06:30:47,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:30:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 456 transitions. [2024-11-09 06:30:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 06:30:47,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:47,786 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] [2024-11-09 06:30:47,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:47,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:30:47,991 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:47,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 873847695, now seen corresponding path program 1 times [2024-11-09 06:30:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:47,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511927567] [2024-11-09 06:30:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:48,459 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 06:30:48,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511927567] [2024-11-09 06:30:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511927567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177655462] [2024-11-09 06:30:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:48,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:30:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:48,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:30:48,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:30:48,940 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 06:30:49,254 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 06:30:49,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:49,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177655462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:49,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1968241883] [2024-11-09 06:30:49,670 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 06:30:49,670 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:49,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:49,671 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:49,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:30:50,865 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 27 for LOIs [2024-11-09 06:30:51,383 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:30:56,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9494#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_parse_input_#t~mem2#1.base_93| Int) (|v_parse_input_#t~mem2#1.offset_90| Int)) (and (or (and (<= 4 (select |#length| 6)) (= |parse_input_#in~input#1.base| |parse_input_~input#1.base|) (= (select (select |#memory_$Pointer$.offset| 6) 0) |v_parse_input_#t~mem2#1.offset_90|) (= (select (select |#memory_$Pointer$.base| 6) 0) |v_parse_input_#t~mem2#1.base_93|) (= |parse_input_~i~0#1| 0) (= (select |#valid| 6) 1)) (and (= (select (select |#memory_$Pointer$.base| 6) 9) |v_parse_input_#t~mem2#1.base_93|) (= (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))) (= (select |#valid| (select (select |#memory_$Pointer$.base| 6) 0)) 1) (<= 13 (select |#length| 6)) (= |v_parse_input_#t~mem2#1.offset_90| (select (select |#memory_$Pointer$.offset| 6) 9)) (= |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|)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))) (= (select |#valid| |v_parse_input_#t~mem2#1.base_93|) 1) (or (< (select |#length| |v_parse_input_#t~mem2#1.base_93|) (+ |v_parse_input_#t~mem2#1.offset_90| 1)) (< |v_parse_input_#t~mem2#1.offset_90| 0)))) (= 6 |~#commands~0.base|) (<= |old(~state~0)| 1) (<= 0 ~state~0) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= 0 |old(~state~0)|) (<= ~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 06:30:56,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:30:56,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:30:56,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2024-11-09 06:30:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882180968] [2024-11-09 06:30:56,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:56,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 06:30:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:30:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 06:30:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 06:30:56,894 INFO L87 Difference]: Start difference. First operand 348 states and 456 transitions. Second operand has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 06:30:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:30:58,151 INFO L93 Difference]: Finished difference Result 442 states and 546 transitions. [2024-11-09 06:30:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 34 [2024-11-09 06:30:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:30:58,154 INFO L225 Difference]: With dead ends: 442 [2024-11-09 06:30:58,154 INFO L226 Difference]: Without dead ends: 442 [2024-11-09 06:30:58,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=343, Invalid=2107, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 06:30:58,156 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 328 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:30:58,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 395 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:30:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-09 06:30:58,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 371. [2024-11-09 06:30:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 331 states have (on average 1.3685800604229608) internal successors, (453), 354 states have internal predecessors, (453), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-09 06:30:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 482 transitions. [2024-11-09 06:30:58,170 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 482 transitions. Word has length 34 [2024-11-09 06:30:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:30:58,171 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 482 transitions. [2024-11-09 06:30:58,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 06:30:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 482 transitions. [2024-11-09 06:30:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:30:58,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:30:58,173 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 06:30:58,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 06:30:58,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:58,377 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:30:58,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1078854746, now seen corresponding path program 1 times [2024-11-09 06:30:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:30:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22504246] [2024-11-09 06:30:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:58,661 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 06:30:58,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:30:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22504246] [2024-11-09 06:30:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22504246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413439962] [2024-11-09 06:30:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:30:58,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:58,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:30:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:58,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:30:58,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:58,976 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 06:30:58,977 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 06:30:59,067 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 06:30:59,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:59,110 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 06:30:59,340 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 06:30:59,374 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 06:30:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413439962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1845061925] [2024-11-09 06:30:59,377 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 06:30:59,378 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:30:59,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:30:59,378 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:30:59,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:00,515 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 21 for LOIs [2024-11-09 06:31:01,076 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:06,858 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10579#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (not (= (select |#valid| 6) 1)) (<= 3 |parse_input_~input#1.base|) (= |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) (<= |parse_input_#in~input#1.base| 4) (= |parse_input_~input#1.offset| 0) (= |parse_input_#in~input#1.offset| 0) (= |old(~global~0.offset)| 0))' at error location [2024-11-09 06:31:06,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:06,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2024-11-09 06:31:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068787115] [2024-11-09 06:31:06,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:06,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:31:06,862 INFO L87 Difference]: Start difference. First operand 371 states and 482 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 06:31:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:07,648 INFO L93 Difference]: Finished difference Result 588 states and 711 transitions. [2024-11-09 06:31:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 06:31:07,649 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 06:31:07,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:07,653 INFO L225 Difference]: With dead ends: 588 [2024-11-09 06:31:07,653 INFO L226 Difference]: Without dead ends: 588 [2024-11-09 06:31:07,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=332, Invalid=1648, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 06:31:07,655 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 445 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:07,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 342 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:31:07,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-09 06:31:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 503. [2024-11-09 06:31:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 452 states have (on average 1.3628318584070795) internal successors, (616), 480 states have internal predecessors, (616), 11 states have call successors, (11), 11 states have call predecessors, (11), 25 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-09 06:31:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 661 transitions. [2024-11-09 06:31:07,679 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 661 transitions. Word has length 37 [2024-11-09 06:31:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:07,679 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 661 transitions. [2024-11-09 06:31:07,679 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 06:31:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 661 transitions. [2024-11-09 06:31:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:31:07,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:07,682 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 06:31:07,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:07,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:07,883 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:07,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash -915241260, now seen corresponding path program 1 times [2024-11-09 06:31:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162707940] [2024-11-09 06:31:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:08,674 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 06:31:08,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162707940] [2024-11-09 06:31:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162707940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:08,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68623949] [2024-11-09 06:31:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:08,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:31:08,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:08,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:31:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:08,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:31:08,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:09,351 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 06:31:09,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:09,737 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 06:31:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68623949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:09,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1342690308] [2024-11-09 06:31:09,740 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 06:31:09,741 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:31:09,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:31:09,741 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:31:09,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:10,837 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 21 for LOIs [2024-11-09 06:31:11,471 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:18,504 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11959#(and (<= 1 |#StackHeapBarrier|) (= 6 |~#commands~0.base|) (exists ((|v_parse_input_#t~mem2#1.base_127| Int)) (and (not (= (select |#valid| |v_parse_input_#t~mem2#1.base_127|) 1)) (or (and (<= 4 (select |#length| 6)) (= (select (select |#memory_$Pointer$.offset| 6) 0) |parse_input_#t~mem2#1.offset|) (= |v_parse_input_#t~mem2#1.base_127| (select (select |#memory_$Pointer$.base| 6) 0)) (= |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|)) (= |v_parse_input_#t~mem2#1.base_127| (select (select |#memory_$Pointer$.base| 6) 9)) (<= 0 (select (select |#memory_$Pointer$.offset| 6) 0)) (= (select |#valid| 6) 1))))) (= ~global~0.offset 0) (= |~#commands~0.offset| 0) (<= |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 06:31:18,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:18,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 24 [2024-11-09 06:31:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966474759] [2024-11-09 06:31:18,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:18,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 06:31:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 06:31:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 06:31:18,507 INFO L87 Difference]: Start difference. First operand 503 states and 661 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 06:31:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:21,415 INFO L93 Difference]: Finished difference Result 791 states and 982 transitions. [2024-11-09 06:31:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 06:31:21,416 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 06:31:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:21,419 INFO L225 Difference]: With dead ends: 791 [2024-11-09 06:31:21,420 INFO L226 Difference]: Without dead ends: 791 [2024-11-09 06:31:21,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=716, Invalid=5290, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 06:31:21,423 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 966 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:21,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 651 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:31:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-09 06:31:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 573. [2024-11-09 06:31:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 523 states have (on average 1.3346080305927341) internal successors, (698), 550 states have internal predecessors, (698), 11 states have call successors, (11), 11 states have call predecessors, (11), 24 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-09 06:31:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 741 transitions. [2024-11-09 06:31:21,445 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 741 transitions. Word has length 38 [2024-11-09 06:31:21,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:21,445 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 741 transitions. [2024-11-09 06:31:21,446 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 06:31:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 741 transitions. [2024-11-09 06:31:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 06:31:21,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:21,447 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:21,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:21,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 06:31:21,651 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:21,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -555720912, now seen corresponding path program 1 times [2024-11-09 06:31:21,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761736045] [2024-11-09 06:31:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:22,031 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 06:31:22,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761736045] [2024-11-09 06:31:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761736045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:22,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546709536] [2024-11-09 06:31:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:31:22,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:22,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:31:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:22,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:31:22,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:22,287 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:31:22,287 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 06:31:22,329 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_parse_input_c1_~x~0#1.base_91| Int)) (= |c_#valid| (store |c_old(#valid)| |v_parse_input_c1_~x~0#1.base_91| 1))) is different from true [2024-11-09 06:31:22,351 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 06:31:22,351 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 06:31:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 3 not checked. [2024-11-09 06:31:22,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546709536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1968369006] [2024-11-09 06:31:22,658 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 06:31:22,659 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:31:22,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:31:22,660 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:31:22,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:23,311 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 06:31:24,782 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:35,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13630#(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 06:31:35,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:35,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:31:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-09 06:31:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991023230] [2024-11-09 06:31:35,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:35,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:31:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:31:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=688, Unknown=1, NotChecked=54, Total=870 [2024-11-09 06:31:35,726 INFO L87 Difference]: Start difference. First operand 573 states and 741 transitions. Second operand has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 06:31:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:36,194 INFO L93 Difference]: Finished difference Result 722 states and 920 transitions. [2024-11-09 06:31:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:31:36,195 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-09 06:31:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:36,199 INFO L225 Difference]: With dead ends: 722 [2024-11-09 06:31:36,199 INFO L226 Difference]: Without dead ends: 722 [2024-11-09 06:31:36,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=218, Invalid=1117, Unknown=1, NotChecked=70, Total=1406 [2024-11-09 06:31:36,201 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 320 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:36,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 246 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 203 Invalid, 0 Unknown, 152 Unchecked, 0.3s Time] [2024-11-09 06:31:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-09 06:31:36,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 659. [2024-11-09 06:31:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 604 states have (on average 1.326158940397351) internal successors, (801), 632 states have internal predecessors, (801), 13 states have call successors, (13), 13 states have call predecessors, (13), 27 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 06:31:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 853 transitions. [2024-11-09 06:31:36,224 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 853 transitions. Word has length 43 [2024-11-09 06:31:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:36,225 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 853 transitions. [2024-11-09 06:31:36,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 06:31:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 853 transitions. [2024-11-09 06:31:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 06:31:36,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:36,227 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] [2024-11-09 06:31:36,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:36,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:36,431 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:36,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1182098787, now seen corresponding path program 1 times [2024-11-09 06:31:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724466379] [2024-11-09 06:31:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:31:36,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724466379] [2024-11-09 06:31:36,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724466379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:36,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:36,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:31:36,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966145318] [2024-11-09 06:31:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:36,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:36,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:36,557 INFO L87 Difference]: Start difference. First operand 659 states and 853 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 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 06:31:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:36,577 INFO L93 Difference]: Finished difference Result 657 states and 840 transitions. [2024-11-09 06:31:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 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 43 [2024-11-09 06:31:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:36,581 INFO L225 Difference]: With dead ends: 657 [2024-11-09 06:31:36,582 INFO L226 Difference]: Without dead ends: 657 [2024-11-09 06:31:36,582 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 06:31:36,583 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:36,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 47 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:31:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-09 06:31:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-11-09 06:31:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 604 states have (on average 1.304635761589404) internal successors, (788), 630 states have internal predecessors, (788), 13 states have call successors, (13), 13 states have call predecessors, (13), 27 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 06:31:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 840 transitions. [2024-11-09 06:31:36,610 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 840 transitions. Word has length 43 [2024-11-09 06:31:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:36,610 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 840 transitions. [2024-11-09 06:31:36,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 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 06:31:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 840 transitions. [2024-11-09 06:31:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 06:31:36,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:36,613 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] [2024-11-09 06:31:36,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 06:31:36,613 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:36,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1182099043, now seen corresponding path program 1 times [2024-11-09 06:31:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151290440] [2024-11-09 06:31:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:36,684 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 06:31:36,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:36,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151290440] [2024-11-09 06:31:36,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151290440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:36,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:36,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:36,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068159723] [2024-11-09 06:31:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:36,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:36,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:36,686 INFO L87 Difference]: Start difference. First operand 657 states and 840 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 06:31:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:36,704 INFO L93 Difference]: Finished difference Result 515 states and 636 transitions. [2024-11-09 06:31:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-09 06:31:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:36,709 INFO L225 Difference]: With dead ends: 515 [2024-11-09 06:31:36,709 INFO L226 Difference]: Without dead ends: 515 [2024-11-09 06:31:36,710 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 06:31:36,710 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:36,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:31:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-09 06:31:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-09 06:31:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 475 states have (on average 1.2526315789473683) internal successors, (595), 492 states have internal predecessors, (595), 11 states have call successors, (11), 11 states have call predecessors, (11), 22 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-11-09 06:31:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 636 transitions. [2024-11-09 06:31:36,728 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 636 transitions. Word has length 43 [2024-11-09 06:31:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:36,728 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 636 transitions. [2024-11-09 06:31:36,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 06:31:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 636 transitions. [2024-11-09 06:31:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 06:31:36,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:36,730 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 06:31:36,730 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:36,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -47479038, now seen corresponding path program 1 times [2024-11-09 06:31:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:36,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340065505] [2024-11-09 06:31:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:37,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340065505] [2024-11-09 06:31:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340065505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733096689] [2024-11-09 06:31:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:37,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:31:37,315 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:37,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 06:31:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:37,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:31:37,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:37,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:31:37,624 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 06:31:37,696 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_parse_input_c1_~x~0#1.base_112| Int)) (let ((.cse0 (select |c_#length| |v_parse_input_c1_~x~0#1.base_112|))) (and (= |c_#length| (store |c_old(#length)| |v_parse_input_c1_~x~0#1.base_112| .cse0)) (<= 1 .cse0)))) is different from true [2024-11-09 06:31:37,757 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 06:31:37,758 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 06:31:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-09 06:31:37,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733096689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [971136579] [2024-11-09 06:31:38,313 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 06:31:38,315 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:31:38,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:31:38,316 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:31:38,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:38,898 INFO L197 IcfgInterpreter]: Interpreting procedure parse_input with input of size 144 for LOIs [2024-11-09 06:31:40,301 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:51,585 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17626#(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 06:31:51,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:51,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:31:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2024-11-09 06:31:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846095755] [2024-11-09 06:31:51,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 06:31:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 06:31:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1224, Unknown=1, NotChecked=72, Total=1482 [2024-11-09 06:31:51,588 INFO L87 Difference]: Start difference. First operand 515 states and 636 transitions. Second operand has 20 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 06:31:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:53,047 INFO L93 Difference]: Finished difference Result 575 states and 665 transitions. [2024-11-09 06:31:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 06:31:53,048 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 44 [2024-11-09 06:31:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:53,051 INFO L225 Difference]: With dead ends: 575 [2024-11-09 06:31:53,051 INFO L226 Difference]: Without dead ends: 575 [2024-11-09 06:31:53,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=528, Invalid=2667, Unknown=1, NotChecked=110, Total=3306 [2024-11-09 06:31:53,054 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 566 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:53,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 351 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 441 Invalid, 0 Unknown, 212 Unchecked, 0.6s Time] [2024-11-09 06:31:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-09 06:31:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 508. [2024-11-09 06:31:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 470 states have (on average 1.2127659574468086) internal successors, (570), 485 states have internal predecessors, (570), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-09 06:31:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 608 transitions. [2024-11-09 06:31:53,071 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 608 transitions. Word has length 44 [2024-11-09 06:31:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:53,071 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 608 transitions. [2024-11-09 06:31:53,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 06:31:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 608 transitions. [2024-11-09 06:31:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 06:31:53,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:53,073 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] [2024-11-09 06:31:53,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 06:31:53,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 06:31:53,277 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:53,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2009643194, now seen corresponding path program 1 times [2024-11-09 06:31:53,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:53,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091201576] [2024-11-09 06:31:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:31:53,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091201576] [2024-11-09 06:31:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091201576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:31:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035069946] [2024-11-09 06:31:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:53,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:53,415 INFO L87 Difference]: Start difference. First operand 508 states and 608 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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 06:31:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:53,433 INFO L93 Difference]: Finished difference Result 507 states and 602 transitions. [2024-11-09 06:31:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:53,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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 06:31:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:53,436 INFO L225 Difference]: With dead ends: 507 [2024-11-09 06:31:53,437 INFO L226 Difference]: Without dead ends: 507 [2024-11-09 06:31:53,437 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 06:31:53,438 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:53,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:31:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-09 06:31:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2024-11-09 06:31:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 470 states have (on average 1.2) internal successors, (564), 484 states have internal predecessors, (564), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-09 06:31:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 602 transitions. [2024-11-09 06:31:53,453 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 602 transitions. Word has length 44 [2024-11-09 06:31:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:53,454 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 602 transitions. [2024-11-09 06:31:53,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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 06:31:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 602 transitions. [2024-11-09 06:31:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:31:53,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:53,457 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] [2024-11-09 06:31:53,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 06:31:53,458 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:53,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2125570501, now seen corresponding path program 1 times [2024-11-09 06:31:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510560741] [2024-11-09 06:31:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:31:53,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510560741] [2024-11-09 06:31:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510560741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:31:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298619901] [2024-11-09 06:31:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:53,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:53,600 INFO L87 Difference]: Start difference. First operand 507 states and 602 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:31:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:53,650 INFO L93 Difference]: Finished difference Result 532 states and 621 transitions. [2024-11-09 06:31:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:53,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-09 06:31:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:53,653 INFO L225 Difference]: With dead ends: 532 [2024-11-09 06:31:53,653 INFO L226 Difference]: Without dead ends: 532 [2024-11-09 06:31:53,654 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 06:31:53,656 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:53,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 74 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:31:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-09 06:31:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 511. [2024-11-09 06:31:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 474 states have (on average 1.1919831223628692) internal successors, (565), 488 states have internal predecessors, (565), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-09 06:31:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2024-11-09 06:31:53,675 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 45 [2024-11-09 06:31:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:53,675 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2024-11-09 06:31:53,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:31:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2024-11-09 06:31:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 06:31:53,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:53,677 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 06:31:53,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 06:31:53,677 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:53,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1646735031, now seen corresponding path program 1 times [2024-11-09 06:31:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509601665] [2024-11-09 06:31:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:53,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:53,789 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 06:31:53,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:53,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509601665] [2024-11-09 06:31:53,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509601665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128661350] [2024-11-09 06:31:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:31:53,792 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:53,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 06:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:53,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:53,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:53,971 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 06:31:53,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:31:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128661350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:53,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:31:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-09 06:31:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021342868] [2024-11-09 06:31:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:53,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:31:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:31:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:53,974 INFO L87 Difference]: Start difference. First operand 511 states and 603 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 06:31:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:54,021 INFO L93 Difference]: Finished difference Result 222 states and 248 transitions. [2024-11-09 06:31:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:31:54,021 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 06:31:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:54,022 INFO L225 Difference]: With dead ends: 222 [2024-11-09 06:31:54,023 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 06:31:54,023 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 06:31:54,024 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:54,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:31:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 06:31:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2024-11-09 06:31:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 200 states have (on average 1.14) internal successors, (228), 208 states have internal predecessors, (228), 6 states have call successors, (6), 6 states have call predecessors, (6), 11 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 06:31:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 248 transitions. [2024-11-09 06:31:54,031 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 248 transitions. Word has length 49 [2024-11-09 06:31:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:54,031 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 248 transitions. [2024-11-09 06:31:54,031 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 06:31:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 248 transitions. [2024-11-09 06:31:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 06:31:54,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:54,033 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:54,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 06:31:54,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 06:31:54,234 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:31:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash -712536734, now seen corresponding path program 1 times [2024-11-09 06:31:54,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:54,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573498456] [2024-11-09 06:31:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:54,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:54,340 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:31:54,341 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:54,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2024-11-09 06:31:54,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2024-11-09 06:31:54,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2024-11-09 06:31:54,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2024-11-09 06:31:54,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2024-11-09 06:31:54,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2024-11-09 06:31:54,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2024-11-09 06:31:54,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2024-11-09 06:31:54,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2024-11-09 06:31:54,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2024-11-09 06:31:54,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2024-11-09 06:31:54,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2024-11-09 06:31:54,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2024-11-09 06:31:54,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2024-11-09 06:31:54,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2024-11-09 06:31:54,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2024-11-09 06:31:54,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2024-11-09 06:31:54,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2024-11-09 06:31:54,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2024-11-09 06:31:54,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2024-11-09 06:31:54,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 06:31:54,355 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] [2024-11-09 06:31:54,451 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:31:54,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:31:54 BoogieIcfgContainer [2024-11-09 06:31:54,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:31:54,457 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:31:54,457 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:31:54,457 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:31:54,458 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:28:50" (3/4) ... [2024-11-09 06:31:54,461 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 06:31:54,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:31:54,464 INFO L158 Benchmark]: Toolchain (without parser) took 186139.72ms. Allocated memory was 138.4MB in the beginning and 574.6MB in the end (delta: 436.2MB). Free memory was 95.0MB in the beginning and 485.0MB in the end (delta: -390.1MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2024-11-09 06:31:54,464 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 138.4MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:31:54,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 819.64ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 72.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 06:31:54,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.72ms. Allocated memory is still 138.4MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:31:54,465 INFO L158 Benchmark]: Boogie Preprocessor took 69.65ms. Allocated memory is still 138.4MB. Free memory was 70.2MB in the beginning and 68.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:31:54,465 INFO L158 Benchmark]: RCFGBuilder took 939.25ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 68.4MB in the beginning and 151.8MB in the end (delta: -83.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2024-11-09 06:31:54,466 INFO L158 Benchmark]: TraceAbstraction took 184212.96ms. Allocated memory was 190.8MB in the beginning and 574.6MB in the end (delta: 383.8MB). Free memory was 151.5MB in the beginning and 485.0MB in the end (delta: -333.5MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2024-11-09 06:31:54,466 INFO L158 Benchmark]: Witness Printer took 6.43ms. Allocated memory is still 574.6MB. Free memory is still 485.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:31:54,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 138.4MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 819.64ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 72.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.72ms. Allocated memory is still 138.4MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 69.65ms. Allocated memory is still 138.4MB. Free memory was 70.2MB in the beginning and 68.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 939.25ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 68.4MB in the beginning and 151.8MB in the end (delta: -83.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * TraceAbstraction took 184212.96ms. Allocated memory was 190.8MB in the beginning and 574.6MB in the end (delta: 383.8MB). Free memory was 151.5MB in the beginning and 485.0MB in the end (delta: -333.5MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * Witness Printer took 6.43ms. Allocated memory is still 574.6MB. Free memory is still 485.0MB. 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: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 721. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L722] 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) [L706] COND FALSE !(\read(*global)) [L708] global = x [L709] state = STATE_2 [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={12:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(state)=1, commands={6:0}, global={12:0}, state=1] [L692] int i = 0; VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={12:0}, i=0, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={12:0}, i=0, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={12:0}, i=0, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={12:0}, 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={12:0}, 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={12:0}, 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={12:0}, 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={12:0}, 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={12:0}, 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) [L706] COND TRUE \read(*global) [L708] global = x [L709] state = STATE_2 [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={20:0}, state=1] [L724] CALL parse_input("c2") VAL [\old(state)=1, commands={6:0}, global={20:0}, state=1] [L692] int i = 0; VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={20:0}, i=0, input={5:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={20:0}, i=0, input={5:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={20:0}, i=0, input={5:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={20:0}, 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={20:0}, 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={20:0}, 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={20:0}, 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={20:0}, 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={20:0}, 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) [L706] COND TRUE \read(*global) [L708] global = x [L709] state = STATE_2 [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={-5:0}, state=1] [L725] 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: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 56 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 184.0s, OverallIterations: 26, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6173 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6173 mSDsluCounter, 5280 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 364 IncrementalHoareTripleChecker+Unchecked, 4137 mSDsCounter, 645 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5625 IncrementalHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 645 mSolverCounterUnsat, 1143 mSDtfsCounter, 5625 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1411 GetRequests, 819 SyntacticMatches, 16 SemanticMatches, 576 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 126.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred in iteration=19, InterpolantAutomatonStates: 266, 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, 25 MinimizatonAttempts, 1143 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 1231 NumberOfCodeBlocks, 1231 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1247 ConstructedInterpolants, 55 QuantifiedInterpolants, 13546 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3276 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 44 InterpolantComputations, 12 PerfectInterpolantSequences, 277/620 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: 6.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 13, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 32, TOOLS_POST_TIME: 6.1s, TOOLS_POST_CALL_APPLICATIONS: 1, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 33, TOOLS_QUANTIFIERELIM_TIME: 6.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 53, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 13, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 3.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, 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: 140, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 06:31:54,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/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 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:31:57,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:31:57,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 06:31:57,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:31:57,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:31:57,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:31:57,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:31:57,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:31:57,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:31:57,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:31:57,673 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:31:57,674 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:31:57,675 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:31:57,676 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:31:57,676 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:31:57,681 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:31:57,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:31:57,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:31:57,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:31:57,683 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:31:57,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:31:57,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:31:57,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:31:57,686 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:31:57,686 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:31:57,687 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:31:57,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:31:57,688 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:31:57,688 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:31:57,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:31:57,689 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:31:57,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:31:57,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:31:57,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:31:57,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:31:57,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:31:57,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:31:57,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:31:57,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:31:57,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:31:57,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:31:57,695 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:31:57,696 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:31:57,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:31:57,697 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:31:57,697 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_dcfe783e-7d36-41e2-8c23-86584cb96877/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6826aeecba49275836b6b398765a757158a4e84d2c6569399d77f2320562875e [2024-11-09 06:31:58,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:31:58,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:31:58,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:31:58,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:31:58,282 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:31:58,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-bftpd/bftpd_3.i Unable to find full path for "g++" [2024-11-09 06:32:01,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:32:01,759 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:32:01,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/sv-benchmarks/c/memsafety-bftpd/bftpd_3.i [2024-11-09 06:32:01,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/29cf654d5/8e8060cf78db4f2eb1430c4dda0708e6/FLAG86a8052e3 [2024-11-09 06:32:01,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/data/29cf654d5/8e8060cf78db4f2eb1430c4dda0708e6 [2024-11-09 06:32:01,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:32:01,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:32:01,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:32:01,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:32:01,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:32:01,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:32:01" (1/1) ... [2024-11-09 06:32:01,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ee34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:01, skipping insertion in model container [2024-11-09 06:32:01,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:32:01" (1/1) ... [2024-11-09 06:32:01,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:32:02,663 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 06:32:02,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:32:02,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:32:02,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:32:02,846 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:32:02,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02 WrapperNode [2024-11-09 06:32:02,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:32:02,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:32:02,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:32:02,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:32:02,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,924 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2024-11-09 06:32:02,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:32:02,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:32:02,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:32:02,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:32:02,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:32:02,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:32:02,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:32:02,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:32:02,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (1/1) ... [2024-11-09 06:32:02,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:32:03,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:03,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:32:03,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:32:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 06:32:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-09 06:32:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-09 06:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:32:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:32:03,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:32:03,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:32:03,720 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-09 06:32:03,721 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:32:03,739 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:32:03,740 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:32:03,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:32:03 BoogieIcfgContainer [2024-11-09 06:32:03,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:32:03,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:32:03,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:32:03,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:32:03,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:32:01" (1/3) ... [2024-11-09 06:32:03,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d53a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:32:03, skipping insertion in model container [2024-11-09 06:32:03,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:32:02" (2/3) ... [2024-11-09 06:32:03,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d53a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:32:03, skipping insertion in model container [2024-11-09 06:32:03,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:32:03" (3/3) ... [2024-11-09 06:32:03,755 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_3.i [2024-11-09 06:32:03,777 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:32:03,778 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-09 06:32:03,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:32:03,853 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;@7c046fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:32:03,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-09 06:32:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 38 states have (on average 1.736842105263158) internal successors, (66), 58 states have internal predecessors, (66), 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 06:32:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:32:03,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:03,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:03,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:03,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash -636986295, now seen corresponding path program 1 times [2024-11-09 06:32:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:03,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860241723] [2024-11-09 06:32:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:32:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:03,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:03,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:04,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:32:04,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:04,319 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 06:32:04,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:04,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860241723] [2024-11-09 06:32:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860241723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:04,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:32:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024883960] [2024-11-09 06:32:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:04,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:32:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:32:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:32:04,383 INFO L87 Difference]: Start difference. First operand has 63 states, 38 states have (on average 1.736842105263158) internal successors, (66), 58 states have internal predecessors, (66), 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 06:32:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:04,651 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2024-11-09 06:32:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:32:04,655 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 06:32:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:04,669 INFO L225 Difference]: With dead ends: 113 [2024-11-09 06:32:04,669 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 06:32:04,671 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 06:32:04,679 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:04,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:32:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 06:32:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86. [2024-11-09 06:32:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.694915254237288) internal successors, (100), 78 states have internal predecessors, (100), 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 06:32:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2024-11-09 06:32:04,748 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 7 [2024-11-09 06:32:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:04,749 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2024-11-09 06:32:04,749 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 06:32:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2024-11-09 06:32:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:32:04,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:04,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:04,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:04,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:04,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:04,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash -636986294, now seen corresponding path program 1 times [2024-11-09 06:32:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:04,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497942788] [2024-11-09 06:32:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:04,955 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 06:32:04,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:04,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:04,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:05,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:32:05,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:05,247 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 06:32:05,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:05,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:05,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497942788] [2024-11-09 06:32:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497942788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:05,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:05,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:32:05,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597086165] [2024-11-09 06:32:05,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:05,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:32:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:32:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:32:05,256 INFO L87 Difference]: Start difference. First operand 86 states and 113 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 06:32:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:05,557 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2024-11-09 06:32:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:32:05,558 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 06:32:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:05,560 INFO L225 Difference]: With dead ends: 190 [2024-11-09 06:32:05,561 INFO L226 Difference]: Without dead ends: 190 [2024-11-09 06:32:05,561 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 06:32:05,563 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:05,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 148 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:32:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-09 06:32:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 159. [2024-11-09 06:32:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.7322834645669292) internal successors, (220), 146 states have internal predecessors, (220), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 246 transitions. [2024-11-09 06:32:05,586 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 246 transitions. Word has length 7 [2024-11-09 06:32:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:05,587 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 246 transitions. [2024-11-09 06:32:05,587 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 06:32:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 246 transitions. [2024-11-09 06:32:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 06:32:05,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:05,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:05,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:05,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:05,790 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:05,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1728261317, now seen corresponding path program 1 times [2024-11-09 06:32:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:05,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074052437] [2024-11-09 06:32:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:05,792 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 06:32:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:05,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:05,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:05,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:32:05,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:06,219 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 06:32:06,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:06,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074052437] [2024-11-09 06:32:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074052437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:32:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322879003] [2024-11-09 06:32:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:06,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:32:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:32:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:32:06,226 INFO L87 Difference]: Start difference. First operand 159 states and 246 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 06:32:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:06,633 INFO L93 Difference]: Finished difference Result 205 states and 296 transitions. [2024-11-09 06:32:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:32:06,635 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 06:32:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:06,637 INFO L225 Difference]: With dead ends: 205 [2024-11-09 06:32:06,638 INFO L226 Difference]: Without dead ends: 205 [2024-11-09 06:32:06,638 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 06:32:06,640 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 82 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:06,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 164 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:32:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-09 06:32:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2024-11-09 06:32:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.7099236641221374) internal successors, (224), 150 states have internal predecessors, (224), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 250 transitions. [2024-11-09 06:32:06,671 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 250 transitions. Word has length 8 [2024-11-09 06:32:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:06,671 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 250 transitions. [2024-11-09 06:32:06,672 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 06:32:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 250 transitions. [2024-11-09 06:32:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:32:06,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:06,673 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:06,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:06,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:06,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:06,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2036493321, now seen corresponding path program 1 times [2024-11-09 06:32:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305306535] [2024-11-09 06:32:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:06,882 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 06:32:06,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:06,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:06,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:06,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:32:07,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:07,318 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 06:32:07,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:07,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:07,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305306535] [2024-11-09 06:32:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305306535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:32:07,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61686992] [2024-11-09 06:32:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:07,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:32:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:32:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:32:07,323 INFO L87 Difference]: Start difference. First operand 163 states and 250 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 06:32:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:07,713 INFO L93 Difference]: Finished difference Result 193 states and 252 transitions. [2024-11-09 06:32:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:32:07,715 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 06:32:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:07,717 INFO L225 Difference]: With dead ends: 193 [2024-11-09 06:32:07,717 INFO L226 Difference]: Without dead ends: 193 [2024-11-09 06:32:07,718 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 06:32:07,721 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 92 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:07,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 193 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:32:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-09 06:32:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2024-11-09 06:32:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 150 states have internal predecessors, (222), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-11-09 06:32:07,758 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 9 [2024-11-09 06:32:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:07,759 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-11-09 06:32:07,759 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 06:32:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-11-09 06:32:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:32:07,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:07,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:07,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:07,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:07,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:07,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1293216441, now seen corresponding path program 1 times [2024-11-09 06:32:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:07,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52803862] [2024-11-09 06:32:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:07,967 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 06:32:07,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:07,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:07,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:08,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:32:08,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:08,150 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 06:32:08,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:08,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52803862] [2024-11-09 06:32:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52803862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:32:08,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776409213] [2024-11-09 06:32:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:08,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:32:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:08,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:32:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:32:08,154 INFO L87 Difference]: Start difference. First operand 163 states and 248 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 06:32:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:08,408 INFO L93 Difference]: Finished difference Result 248 states and 342 transitions. [2024-11-09 06:32:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:32:08,409 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 06:32:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:08,411 INFO L225 Difference]: With dead ends: 248 [2024-11-09 06:32:08,411 INFO L226 Difference]: Without dead ends: 248 [2024-11-09 06:32:08,412 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 06:32:08,413 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 138 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:08,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 197 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:32:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-09 06:32:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2024-11-09 06:32:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 165 states have (on average 1.6484848484848484) internal successors, (272), 185 states have internal predecessors, (272), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 298 transitions. [2024-11-09 06:32:08,430 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 298 transitions. Word has length 10 [2024-11-09 06:32:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:08,430 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 298 transitions. [2024-11-09 06:32:08,431 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 06:32:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 298 transitions. [2024-11-09 06:32:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 06:32:08,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:08,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:08,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:08,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:08,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:08,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1435003957, now seen corresponding path program 1 times [2024-11-09 06:32:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917942736] [2024-11-09 06:32:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:08,637 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 06:32:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:08,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:08,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:32:08,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:32:08,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:08,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:08,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917942736] [2024-11-09 06:32:08,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917942736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:32:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87179025] [2024-11-09 06:32:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:08,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:32:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:32:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:32:08,878 INFO L87 Difference]: Start difference. First operand 199 states and 298 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 06:32:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:09,155 INFO L93 Difference]: Finished difference Result 249 states and 321 transitions. [2024-11-09 06:32:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:32:09,156 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 06:32:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:09,158 INFO L225 Difference]: With dead ends: 249 [2024-11-09 06:32:09,158 INFO L226 Difference]: Without dead ends: 249 [2024-11-09 06:32:09,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:32:09,159 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 148 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:09,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 217 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:32:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-09 06:32:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 213. [2024-11-09 06:32:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 178 states have (on average 1.646067415730337) internal successors, (293), 199 states have internal predecessors, (293), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2024-11-09 06:32:09,173 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 11 [2024-11-09 06:32:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:09,174 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2024-11-09 06:32:09,174 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 06:32:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2024-11-09 06:32:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:32:09,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:09,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:09,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:09,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:09,377 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:09,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2128527815, now seen corresponding path program 1 times [2024-11-09 06:32:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947765749] [2024-11-09 06:32:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:09,379 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 06:32:09,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:09,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:09,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:09,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:32:09,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:09,798 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 06:32:09,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:10,264 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 06:32:10,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947765749] [2024-11-09 06:32:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947765749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1249218679] [2024-11-09 06:32:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:10,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:10,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 06:32:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:10,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:32:10,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:10,742 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 06:32:10,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:11,021 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 06:32:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1249218679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824318458] [2024-11-09 06:32:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:11,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:11,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:11,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:32:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:11,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:32:11,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:11,363 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 06:32:11,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:11,650 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 06:32:11,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824318458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:11,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:32:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2024-11-09 06:32:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104440832] [2024-11-09 06:32:11,652 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:11,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:32:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:32:11,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:32:11,654 INFO L87 Difference]: Start difference. First operand 213 states and 319 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 06:32:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:12,271 INFO L93 Difference]: Finished difference Result 287 states and 379 transitions. [2024-11-09 06:32:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:32:12,272 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 06:32:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:12,274 INFO L225 Difference]: With dead ends: 287 [2024-11-09 06:32:12,274 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 06:32:12,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:32:12,275 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 143 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:12,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 320 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:32:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 06:32:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 246. [2024-11-09 06:32:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 211 states have (on average 1.6303317535545023) internal successors, (344), 232 states have internal predecessors, (344), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 370 transitions. [2024-11-09 06:32:12,290 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 370 transitions. Word has length 16 [2024-11-09 06:32:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:12,291 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 370 transitions. [2024-11-09 06:32:12,291 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 06:32:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 370 transitions. [2024-11-09 06:32:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:32:12,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:12,292 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:12,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:12,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:12,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:12,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:12,894 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:12,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1559852874, now seen corresponding path program 1 times [2024-11-09 06:32:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501092391] [2024-11-09 06:32:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:12,895 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 06:32:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:12,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:12,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:12,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:32:12,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:13,389 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 06:32:13,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:13,626 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 06:32:13,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501092391] [2024-11-09 06:32:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501092391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1256878818] [2024-11-09 06:32:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:13,628 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:13,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:13,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:13,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 06:32:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:13,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:32:13,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:14,308 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 06:32:14,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:14,424 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 06:32:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1256878818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035722590] [2024-11-09 06:32:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:14,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:14,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:14,426 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:14,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:32:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:14,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:32:14,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:15,043 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 06:32:15,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:15,619 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 06:32:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035722590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:15,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:32:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 18 [2024-11-09 06:32:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787775226] [2024-11-09 06:32:15,621 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:15,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 06:32:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 06:32:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:32:15,623 INFO L87 Difference]: Start difference. First operand 246 states and 370 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 06:32:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:17,697 INFO L93 Difference]: Finished difference Result 382 states and 523 transitions. [2024-11-09 06:32:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 06:32:17,698 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 06:32:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:17,700 INFO L225 Difference]: With dead ends: 382 [2024-11-09 06:32:17,700 INFO L226 Difference]: Without dead ends: 382 [2024-11-09 06:32:17,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=308, Invalid=952, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 06:32:17,702 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 481 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:17,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 388 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:32:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-09 06:32:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 289. [2024-11-09 06:32:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 254 states have (on average 1.6299212598425197) internal successors, (414), 275 states have internal predecessors, (414), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 06:32:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 440 transitions. [2024-11-09 06:32:17,713 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 440 transitions. Word has length 17 [2024-11-09 06:32:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:17,714 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 440 transitions. [2024-11-09 06:32:17,714 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 06:32:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 440 transitions. [2024-11-09 06:32:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:32:17,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:17,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:32:17,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-09 06:32:17,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 06:32:18,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:18,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:18,316 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:18,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1110798792, now seen corresponding path program 1 times [2024-11-09 06:32:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730069007] [2024-11-09 06:32:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:18,318 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 06:32:18,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:18,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:18,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:18,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:32:18,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:18,840 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 06:32:18,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:19,134 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 06:32:19,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730069007] [2024-11-09 06:32:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730069007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553071219] [2024-11-09 06:32:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:19,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:19,139 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:19,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 06:32:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:19,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:32:19,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:19,704 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 06:32:19,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:19,838 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 06:32:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553071219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906656053] [2024-11-09 06:32:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:19,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:19,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:19,842 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:19,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 06:32:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:19,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:32:19,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:20,615 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 06:32:20,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:21,365 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 06:32:21,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906656053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:21,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:32:21,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 15 [2024-11-09 06:32:21,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663643148] [2024-11-09 06:32:21,366 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:21,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 06:32:21,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 06:32:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:32:21,368 INFO L87 Difference]: Start difference. First operand 289 states and 440 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 06:32:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:24,117 INFO L93 Difference]: Finished difference Result 503 states and 685 transitions. [2024-11-09 06:32:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:32:24,119 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 06:32:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:24,122 INFO L225 Difference]: With dead ends: 503 [2024-11-09 06:32:24,122 INFO L226 Difference]: Without dead ends: 503 [2024-11-09 06:32:24,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2024-11-09 06:32:24,123 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 353 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:24,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 674 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 06:32:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-09 06:32:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 382. [2024-11-09 06:32:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 344 states have (on average 1.6453488372093024) internal successors, (566), 366 states have internal predecessors, (566), 9 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 06:32:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 598 transitions. [2024-11-09 06:32:24,139 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 598 transitions. Word has length 18 [2024-11-09 06:32:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:24,140 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 598 transitions. [2024-11-09 06:32:24,140 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 06:32:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 598 transitions. [2024-11-09 06:32:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:32:24,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:24,141 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 06:32:24,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:24,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 06:32:24,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:24,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:24,743 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:24,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash 868250962, now seen corresponding path program 1 times [2024-11-09 06:32:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:24,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096242866] [2024-11-09 06:32:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:24,744 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 06:32:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:24,748 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:24,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:24,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:32:24,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:24,855 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 06:32:24,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:24,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:24,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096242866] [2024-11-09 06:32:24,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096242866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:24,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:24,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:32:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27296977] [2024-11-09 06:32:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:24,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:32:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:32:24,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:32:24,857 INFO L87 Difference]: Start difference. First operand 382 states and 598 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 06:32:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:24,888 INFO L93 Difference]: Finished difference Result 535 states and 832 transitions. [2024-11-09 06:32:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:32:24,889 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 06:32:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:24,892 INFO L225 Difference]: With dead ends: 535 [2024-11-09 06:32:24,892 INFO L226 Difference]: Without dead ends: 535 [2024-11-09 06:32:24,892 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 06:32:24,893 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 51 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:24,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 114 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:32:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-09 06:32:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 515. [2024-11-09 06:32:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 468 states have (on average 1.641025641025641) internal successors, (768), 492 states have internal predecessors, (768), 13 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2024-11-09 06:32:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 824 transitions. [2024-11-09 06:32:24,912 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 824 transitions. Word has length 19 [2024-11-09 06:32:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:24,912 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 824 transitions. [2024-11-09 06:32:24,912 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 06:32:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 824 transitions. [2024-11-09 06:32:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:32:24,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:24,913 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 06:32:24,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,114 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:25,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash 868251218, now seen corresponding path program 1 times [2024-11-09 06:32:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:25,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103435566] [2024-11-09 06:32:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:25,116 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 06:32:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:25,118 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:25,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:32:25,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:25,302 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 06:32:25,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:25,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:25,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103435566] [2024-11-09 06:32:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103435566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:32:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591393328] [2024-11-09 06:32:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:25,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:32:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:32:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:32:25,305 INFO L87 Difference]: Start difference. First operand 515 states and 824 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 06:32:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:25,384 INFO L93 Difference]: Finished difference Result 566 states and 878 transitions. [2024-11-09 06:32:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:32:25,385 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 06:32:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:25,388 INFO L225 Difference]: With dead ends: 566 [2024-11-09 06:32:25,389 INFO L226 Difference]: Without dead ends: 566 [2024-11-09 06:32:25,389 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 06:32:25,390 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:25,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:32:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-09 06:32:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 550. [2024-11-09 06:32:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 500 states have (on average 1.628) internal successors, (814), 525 states have internal predecessors, (814), 14 states have call successors, (14), 10 states have call predecessors, (14), 16 states have return successors, (46), 14 states have call predecessors, (46), 14 states have call successors, (46) [2024-11-09 06:32:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 874 transitions. [2024-11-09 06:32:25,418 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 874 transitions. Word has length 19 [2024-11-09 06:32:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:25,419 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 874 transitions. [2024-11-09 06:32:25,419 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 06:32:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 874 transitions. [2024-11-09 06:32:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:32:25,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:25,421 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 06:32:25,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:25,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:25,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1145976119, now seen corresponding path program 1 times [2024-11-09 06:32:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711680098] [2024-11-09 06:32:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:25,624 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 06:32:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:25,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:25,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:32:25,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:25,845 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 06:32:25,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:25,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711680098] [2024-11-09 06:32:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711680098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:32:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868703361] [2024-11-09 06:32:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:25,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:32:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:32:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:32:25,848 INFO L87 Difference]: Start difference. First operand 550 states and 874 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 06:32:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:25,923 INFO L93 Difference]: Finished difference Result 565 states and 874 transitions. [2024-11-09 06:32:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:32:25,924 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 06:32:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:25,928 INFO L225 Difference]: With dead ends: 565 [2024-11-09 06:32:25,929 INFO L226 Difference]: Without dead ends: 565 [2024-11-09 06:32:25,929 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 06:32:25,930 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 33 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:25,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 115 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:32:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-09 06:32:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 550. [2024-11-09 06:32:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 500 states have (on average 1.62) internal successors, (810), 525 states have internal predecessors, (810), 14 states have call successors, (14), 10 states have call predecessors, (14), 16 states have return successors, (46), 14 states have call predecessors, (46), 14 states have call successors, (46) [2024-11-09 06:32:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 870 transitions. [2024-11-09 06:32:25,955 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 870 transitions. Word has length 20 [2024-11-09 06:32:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:25,957 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 870 transitions. [2024-11-09 06:32:25,958 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 06:32:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 870 transitions. [2024-11-09 06:32:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 06:32:25,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:25,961 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 06:32:25,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:26,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:26,162 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:26,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash -234481366, now seen corresponding path program 2 times [2024-11-09 06:32:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889237215] [2024-11-09 06:32:26,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:32:26,164 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 06:32:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:26,165 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:26,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:26,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:32:26,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:32:26,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:32:26,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:26,594 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 06:32:26,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:27,420 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 06:32:27,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:27,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889237215] [2024-11-09 06:32:27,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889237215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:27,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106016412] [2024-11-09 06:32:27,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:32:27,421 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:27,425 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:27,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 06:32:27,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:32:27,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:32:27,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:32:27,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:27,789 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 06:32:27,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:27,946 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 06:32:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [106016412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923353484] [2024-11-09 06:32:27,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:32:27,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:27,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:27,949 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 06:32:28,029 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:32:28,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:32:28,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:32:28,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:28,071 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 06:32:28,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:28,125 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 06:32:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923353484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:28,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:32:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 16 [2024-11-09 06:32:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947874078] [2024-11-09 06:32:28,126 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:28,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:32:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:32:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:32:28,128 INFO L87 Difference]: Start difference. First operand 550 states and 870 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 06:32:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:29,314 INFO L93 Difference]: Finished difference Result 475 states and 668 transitions. [2024-11-09 06:32:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:32:29,316 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 06:32:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:29,319 INFO L225 Difference]: With dead ends: 475 [2024-11-09 06:32:29,320 INFO L226 Difference]: Without dead ends: 475 [2024-11-09 06:32:29,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:32:29,322 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 156 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:29,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 583 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:32:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-09 06:32:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 443. [2024-11-09 06:32:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 393 states have (on average 1.4885496183206106) internal successors, (585), 418 states have internal predecessors, (585), 14 states have call successors, (14), 10 states have call predecessors, (14), 16 states have return successors, (46), 14 states have call predecessors, (46), 14 states have call successors, (46) [2024-11-09 06:32:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 645 transitions. [2024-11-09 06:32:29,342 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 645 transitions. Word has length 25 [2024-11-09 06:32:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:29,342 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 645 transitions. [2024-11-09 06:32:29,342 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 06:32:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 645 transitions. [2024-11-09 06:32:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:32:29,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:29,345 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 06:32:29,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:29,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:29,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:29,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:29,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:29,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash -487295447, now seen corresponding path program 1 times [2024-11-09 06:32:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210954238] [2024-11-09 06:32:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:29,948 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 06:32:29,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:29,952 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:29,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:30,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:32:30,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:30,046 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 06:32:30,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:30,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:30,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210954238] [2024-11-09 06:32:30,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210954238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:30,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:32:30,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134994463] [2024-11-09 06:32:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:30,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:32:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:32:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:32:30,050 INFO L87 Difference]: Start difference. First operand 443 states and 645 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 06:32:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:30,062 INFO L93 Difference]: Finished difference Result 320 states and 446 transitions. [2024-11-09 06:32:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:32:30,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-09 06:32:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:30,065 INFO L225 Difference]: With dead ends: 320 [2024-11-09 06:32:30,065 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 06:32:30,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 06:32:30,066 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 128 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 06:32:30,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:32:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 06:32:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2024-11-09 06:32:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 278 states have (on average 1.4712230215827338) internal successors, (409), 301 states have internal predecessors, (409), 10 states have call successors, (10), 7 states have call predecessors, (10), 11 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-09 06:32:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 445 transitions. [2024-11-09 06:32:30,079 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 445 transitions. Word has length 27 [2024-11-09 06:32:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:30,080 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 445 transitions. [2024-11-09 06:32:30,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 06:32:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 445 transitions. [2024-11-09 06:32:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:32:30,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:30,081 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] [2024-11-09 06:32:30,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:30,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:30,282 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:30,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash -502983803, now seen corresponding path program 1 times [2024-11-09 06:32:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:30,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098647049] [2024-11-09 06:32:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:30,283 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 06:32:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:30,287 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:30,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:30,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:32:30,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:30,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:32:30,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 06:32:31,056 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 06:32:31,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:31,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098647049] [2024-11-09 06:32:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098647049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:32:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1661192759] [2024-11-09 06:32:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:31,778 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:31,781 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 06:32:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:32,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:32:32,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:32,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:32:32,532 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 06:32:32,592 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 06:32:32,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1661192759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:32:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552951422] [2024-11-09 06:32:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:34,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:34,846 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:34,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 06:32:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:34,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:32:34,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:35,361 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:32:35,361 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 06:32:35,683 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 06:32:35,769 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 06:32:35,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:36,007 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 06:32:36,008 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 06:32:38,950 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 06:32:38,950 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 06:32:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:32:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552951422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:32:39,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:32:39,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 4] total 12 [2024-11-09 06:32:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632952166] [2024-11-09 06:32:39,148 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:39,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:32:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:32:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=156, Unknown=4, NotChecked=0, Total=210 [2024-11-09 06:32:39,150 INFO L87 Difference]: Start difference. First operand 319 states and 445 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 3 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 06:32:41,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:32:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:44,835 INFO L93 Difference]: Finished difference Result 345 states and 446 transitions. [2024-11-09 06:32:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:32:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 3 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 29 [2024-11-09 06:32:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:44,841 INFO L225 Difference]: With dead ends: 345 [2024-11-09 06:32:44,841 INFO L226 Difference]: Without dead ends: 345 [2024-11-09 06:32:44,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=213, Invalid=433, Unknown=4, NotChecked=0, Total=650 [2024-11-09 06:32:44,842 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 336 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 66 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:44,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 183 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 196 Invalid, 16 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 06:32:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-09 06:32:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 333. [2024-11-09 06:32:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 290 states have (on average 1.3655172413793104) internal successors, (396), 313 states have internal predecessors, (396), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-09 06:32:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 439 transitions. [2024-11-09 06:32:44,868 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 439 transitions. Word has length 29 [2024-11-09 06:32:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:44,869 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 439 transitions. [2024-11-09 06:32:44,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 3 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 06:32:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 439 transitions. [2024-11-09 06:32:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:32:44,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:44,870 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 06:32:44,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:45,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:45,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 06:32:45,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:45,473 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:45,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1344666631, now seen corresponding path program 1 times [2024-11-09 06:32:45,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179331099] [2024-11-09 06:32:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:45,475 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 06:32:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:45,476 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:45,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (27)] Waiting until timeout for monitored process [2024-11-09 06:32:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:45,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:32:45,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:46,125 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 06:32:46,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:32:46,125 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179331099] [2024-11-09 06:32:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179331099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:32:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:32:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:32:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828009902] [2024-11-09 06:32:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:32:46,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:32:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:32:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:32:46,128 INFO L87 Difference]: Start difference. First operand 333 states and 439 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 06:32:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:32:46,523 INFO L93 Difference]: Finished difference Result 354 states and 456 transitions. [2024-11-09 06:32:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:32:46,524 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 06:32:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:32:46,526 INFO L225 Difference]: With dead ends: 354 [2024-11-09 06:32:46,526 INFO L226 Difference]: Without dead ends: 354 [2024-11-09 06:32:46,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:32:46,528 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 69 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:32:46,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 189 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:32:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-09 06:32:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 344. [2024-11-09 06:32:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 301 states have (on average 1.3521594684385383) internal successors, (407), 324 states have internal predecessors, (407), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-09 06:32:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 450 transitions. [2024-11-09 06:32:46,541 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 450 transitions. Word has length 30 [2024-11-09 06:32:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:32:46,541 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 450 transitions. [2024-11-09 06:32:46,542 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 06:32:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 450 transitions. [2024-11-09 06:32:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:32:46,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:32:46,543 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 06:32:46,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (27)] Forceful destruction successful, exit code 0 [2024-11-09 06:32:46,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:46,744 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:32:46,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:32:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1963868292, now seen corresponding path program 1 times [2024-11-09 06:32:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:32:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98897965] [2024-11-09 06:32:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:46,745 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 06:32:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:32:46,746 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:46,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:32:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:46,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:32:46,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:32:48,271 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 06:32:48,712 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 06:32:48,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:51,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:32:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98897965] [2024-11-09 06:32:51,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98897965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:32:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1618293741] [2024-11-09 06:32:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:32:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:32:51,415 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:32:51,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-09 06:32:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:51,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:32:51,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:53,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:32:53,053 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 06:32:53,349 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 06:32:53,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1618293741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:32:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899323189] [2024-11-09 06:32:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:32:55,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:32:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:32:55,794 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:32:55,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 06:32:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:32:55,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:32:55,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:32:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:32:57,116 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 06:32:57,365 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 06:32:57,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:32:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899323189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:32:59,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:32:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 7 [2024-11-09 06:32:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34634306] [2024-11-09 06:32:59,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:32:59,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:32:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:32:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:32:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2024-11-09 06:32:59,767 INFO L87 Difference]: Start difference. First operand 344 states and 450 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 06:33:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:33:01,842 INFO L93 Difference]: Finished difference Result 353 states and 450 transitions. [2024-11-09 06:33:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:33:01,843 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 06:33:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:33:01,845 INFO L225 Difference]: With dead ends: 353 [2024-11-09 06:33:01,846 INFO L226 Difference]: Without dead ends: 353 [2024-11-09 06:33:01,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=143, Invalid=362, Unknown=1, NotChecked=0, Total=506 [2024-11-09 06:33:01,847 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 147 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:33:01,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 185 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:33:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-09 06:33:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2024-11-09 06:33:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 302 states have (on average 1.3344370860927153) internal successors, (403), 325 states have internal predecessors, (403), 11 states have call successors, (11), 8 states have call predecessors, (11), 15 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-09 06:33:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 446 transitions. [2024-11-09 06:33:01,860 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 446 transitions. Word has length 31 [2024-11-09 06:33:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:33:01,860 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 446 transitions. [2024-11-09 06:33:01,860 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 06:33:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 446 transitions. [2024-11-09 06:33:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 06:33:01,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:33:01,861 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 06:33:01,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Ended with exit code 0 [2024-11-09 06:33:02,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 06:33:02,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-09 06:33:02,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:02,462 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:33:02,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:33:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 750374956, now seen corresponding path program 1 times [2024-11-09 06:33:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:33:02,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019279540] [2024-11-09 06:33:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:02,464 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 06:33:02,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:33:02,468 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:02,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:02,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:33:02,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:02,842 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 06:33:02,951 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 06:33:02,951 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 06:33:03,196 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 06:33:03,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:04,078 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 06:33:04,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:33:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019279540] [2024-11-09 06:33:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019279540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:33:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [623785811] [2024-11-09 06:33:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:04,079 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:04,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:33:04,084 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:33:04,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-09 06:33:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:04,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:33:04,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:04,709 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-09 06:33:04,710 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 06:33:05,095 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 06:33:05,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:05,707 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 06:33:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [623785811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:33:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314828941] [2024-11-09 06:33:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:33:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:33:05,711 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:33:05,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 06:33:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:05,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:33:05,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:06,021 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 06:33:06,220 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 06:33:06,220 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 06:33:06,369 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 06:33:06,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:07,131 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 06:33:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314828941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:33:07,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:33:07,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 12 [2024-11-09 06:33:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51736563] [2024-11-09 06:33:07,132 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:33:07,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:33:07,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:33:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:33:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2024-11-09 06:33:07,134 INFO L87 Difference]: Start difference. First operand 345 states and 446 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 06:33:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:33:21,517 INFO L93 Difference]: Finished difference Result 486 states and 587 transitions. [2024-11-09 06:33:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:33:21,518 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 06:33:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:33:21,521 INFO L225 Difference]: With dead ends: 486 [2024-11-09 06:33:21,521 INFO L226 Difference]: Without dead ends: 486 [2024-11-09 06:33:21,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 166 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=189, Invalid=458, Unknown=11, NotChecked=98, Total=756 [2024-11-09 06:33:21,522 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 396 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:33:21,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 457 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 410 Unchecked, 1.4s Time] [2024-11-09 06:33:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-11-09 06:33:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 423. [2024-11-09 06:33:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 377 states have (on average 1.2891246684350133) internal successors, (486), 401 states have internal predecessors, (486), 11 states have call successors, (11), 10 states have call predecessors, (11), 18 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-09 06:33:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 528 transitions. [2024-11-09 06:33:21,538 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 528 transitions. Word has length 32 [2024-11-09 06:33:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:33:21,538 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 528 transitions. [2024-11-09 06:33:21,538 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 06:33:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 528 transitions. [2024-11-09 06:33:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:33:21,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:33:21,540 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 06:33:21,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-09 06:33:21,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-09 06:33:21,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Ended with exit code 0 [2024-11-09 06:33:22,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:22,145 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:33:22,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:33:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1786787206, now seen corresponding path program 1 times [2024-11-09 06:33:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:33:22,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716388170] [2024-11-09 06:33:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:22,146 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 06:33:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:33:22,150 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:22,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:22,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:33:22,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:22,690 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 06:33:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:33:22,863 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 06:33:23,222 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 06:33:23,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:23,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:33:23,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716388170] [2024-11-09 06:33:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716388170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [163443312] [2024-11-09 06:33:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:33:23,750 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:33:23,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-09 06:33:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:24,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:33:24,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:33:24,444 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 06:33:24,661 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 06:33:24,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [163443312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:25,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879567505] [2024-11-09 06:33:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:33:25,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:33:25,018 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:33:25,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 06:33:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:25,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:33:25,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:25,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:33:25,519 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 06:33:25,723 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 06:33:25,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879567505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:26,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:33:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 06:33:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146913784] [2024-11-09 06:33:26,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:33:26,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:33:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:33:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:33:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2024-11-09 06:33:26,053 INFO L87 Difference]: Start difference. First operand 423 states and 528 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 06:33:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:33:27,981 INFO L93 Difference]: Finished difference Result 591 states and 690 transitions. [2024-11-09 06:33:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:33:27,982 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 06:33:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:33:27,985 INFO L225 Difference]: With dead ends: 591 [2024-11-09 06:33:27,985 INFO L226 Difference]: Without dead ends: 591 [2024-11-09 06:33:27,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=291, Unknown=1, NotChecked=38, Total=462 [2024-11-09 06:33:27,986 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 368 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:33:27,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 213 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 157 Invalid, 0 Unknown, 231 Unchecked, 1.0s Time] [2024-11-09 06:33:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-09 06:33:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 522. [2024-11-09 06:33:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 473 states have (on average 1.2832980972515857) internal successors, (607), 499 states have internal predecessors, (607), 11 states have call successors, (11), 11 states have call predecessors, (11), 21 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-09 06:33:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 645 transitions. [2024-11-09 06:33:28,006 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 645 transitions. Word has length 33 [2024-11-09 06:33:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:33:28,007 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 645 transitions. [2024-11-09 06:33:28,007 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 06:33:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 645 transitions. [2024-11-09 06:33:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:33:28,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:33:28,009 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 06:33:28,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-09 06:33:28,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:28,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 06:33:28,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:33:28,613 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:33:28,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:33:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 835216682, now seen corresponding path program 1 times [2024-11-09 06:33:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:33:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329925850] [2024-11-09 06:33:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:28,614 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 06:33:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:33:28,616 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:28,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:28,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:33:28,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:30,148 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 06:33:30,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:31,410 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 06:33:31,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:33:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329925850] [2024-11-09 06:33:31,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329925850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:33:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1672949948] [2024-11-09 06:33:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:33:31,412 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:33:31,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-09 06:33:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:31,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:33:31,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:32,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2024-11-09 06:33:33,204 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 06:33:33,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:33,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1672949948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438097738] [2024-11-09 06:33:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:33,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:33:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:33:33,679 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:33:33,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 06:33:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:33,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:33:33,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:34,921 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 06:33:34,921 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 06:33:35,491 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 06:33:35,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:35,661 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 06:33:36,734 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 06:33:36,951 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 06:33:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438097738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:33:36,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:33:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4, 5, 5] total 27 [2024-11-09 06:33:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517124216] [2024-11-09 06:33:36,952 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:33:36,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 06:33:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:33:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 06:33:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2024-11-09 06:33:36,955 INFO L87 Difference]: Start difference. First operand 522 states and 645 transitions. Second operand has 28 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 9 states have call successors, (9), 9 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:33:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:33:46,214 INFO L93 Difference]: Finished difference Result 410 states and 471 transitions. [2024-11-09 06:33:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 06:33:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 9 states have call successors, (9), 9 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2024-11-09 06:33:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:33:46,217 INFO L225 Difference]: With dead ends: 410 [2024-11-09 06:33:46,217 INFO L226 Difference]: Without dead ends: 410 [2024-11-09 06:33:46,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=719, Invalid=2703, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 06:33:46,219 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 757 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:33:46,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 494 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 06:33:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-09 06:33:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 334. [2024-11-09 06:33:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 298 states have (on average 1.3053691275167785) internal successors, (389), 319 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 06:33:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 409 transitions. [2024-11-09 06:33:46,232 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 409 transitions. Word has length 39 [2024-11-09 06:33:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:33:46,233 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 409 transitions. [2024-11-09 06:33:46,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 9 states have call successors, (9), 9 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:33:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 409 transitions. [2024-11-09 06:33:46,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 06:33:46,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:33:46,234 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:33:46,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-09 06:33:46,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:46,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-09 06:33:46,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:46,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:33:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:33:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1606144451, now seen corresponding path program 1 times [2024-11-09 06:33:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:33:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462268099] [2024-11-09 06:33:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:46,837 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 06:33:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:33:46,839 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:46,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:33:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:46,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:33:46,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:47,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:33:47,956 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 06:33:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:33:48,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:52,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:33:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462268099] [2024-11-09 06:33:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462268099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575178328] [2024-11-09 06:33:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:33:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:33:52,180 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:33:52,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-09 06:33:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:52,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:33:52,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:53,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:33:53,468 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 06:33:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:33:54,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [575178328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:33:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365439577] [2024-11-09 06:33:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:57,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:33:57,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:33:57,028 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:33:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 06:33:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:33:57,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:33:57,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:33:57,825 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:33:57,825 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 06:33:58,279 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 06:33:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:33:58,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:33:59,673 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 06:33:59,673 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 06:34:02,708 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 06:34:02,709 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 06:34:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:34:04,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365439577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:04,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:34:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 5] total 14 [2024-11-09 06:34:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826758881] [2024-11-09 06:34:04,975 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 06:34:04,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:34:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:34:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=207, Unknown=6, NotChecked=0, Total=272 [2024-11-09 06:34:04,976 INFO L87 Difference]: Start difference. First operand 334 states and 409 transitions. Second operand has 16 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 3 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 06:34:07,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:34:11,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:34:12,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:34:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:12,788 INFO L93 Difference]: Finished difference Result 348 states and 414 transitions. [2024-11-09 06:34:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:34:12,789 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 3 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 44 [2024-11-09 06:34:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:12,791 INFO L225 Difference]: With dead ends: 348 [2024-11-09 06:34:12,791 INFO L226 Difference]: Without dead ends: 348 [2024-11-09 06:34:12,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=225, Invalid=525, Unknown=6, NotChecked=0, Total=756 [2024-11-09 06:34:12,798 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 210 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 39 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:12,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 246 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 6.7s Time] [2024-11-09 06:34:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-09 06:34:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 332. [2024-11-09 06:34:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 298 states have (on average 1.278523489932886) internal successors, (381), 317 states have internal predecessors, (381), 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 06:34:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 401 transitions. [2024-11-09 06:34:12,826 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 401 transitions. Word has length 44 [2024-11-09 06:34:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:12,831 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 401 transitions. [2024-11-09 06:34:12,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 3 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 06:34:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 401 transitions. [2024-11-09 06:34:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 06:34:12,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:12,832 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 06:34:12,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-09 06:34:13,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:13,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-09 06:34:13,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:34:13,433 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:13,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1923126374, now seen corresponding path program 1 times [2024-11-09 06:34:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660941214] [2024-11-09 06:34:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:13,434 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 06:34:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:13,436 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:13,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:13,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:34:13,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:34:13,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:34:13,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:13,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660941214] [2024-11-09 06:34:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660941214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:34:13,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:34:13,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:34:13,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493437000] [2024-11-09 06:34:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:34:13,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:34:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:34:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:34:13,848 INFO L87 Difference]: Start difference. First operand 332 states and 401 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 06:34:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:13,940 INFO L93 Difference]: Finished difference Result 330 states and 395 transitions. [2024-11-09 06:34:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:34:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 50 [2024-11-09 06:34:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:13,943 INFO L225 Difference]: With dead ends: 330 [2024-11-09 06:34:13,943 INFO L226 Difference]: Without dead ends: 330 [2024-11-09 06:34:13,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 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 06:34:13,944 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 38 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:13,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 104 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:34:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-09 06:34:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2024-11-09 06:34:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 298 states have (on average 1.2583892617449663) internal successors, (375), 315 states have internal predecessors, (375), 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 06:34:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 395 transitions. [2024-11-09 06:34:13,959 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 395 transitions. Word has length 50 [2024-11-09 06:34:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:13,961 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 395 transitions. [2024-11-09 06:34:13,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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 06:34:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 395 transitions. [2024-11-09 06:34:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 06:34:13,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:13,964 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 06:34:13,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Ended with exit code 0 [2024-11-09 06:34:14,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:14,165 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:14,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1923126630, now seen corresponding path program 1 times [2024-11-09 06:34:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:14,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574022314] [2024-11-09 06:34:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:14,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:34:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:14,167 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:14,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (44)] Waiting until timeout for monitored process [2024-11-09 06:34:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:14,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:34:14,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:14,316 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 06:34:14,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:34:14,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574022314] [2024-11-09 06:34:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574022314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:34:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:34:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:34:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125324174] [2024-11-09 06:34:14,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:34:14,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:34:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:34:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:34:14,319 INFO L87 Difference]: Start difference. First operand 330 states and 395 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 06:34:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:14,337 INFO L93 Difference]: Finished difference Result 301 states and 347 transitions. [2024-11-09 06:34:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:34:14,338 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 06:34:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:14,340 INFO L225 Difference]: With dead ends: 301 [2024-11-09 06:34:14,340 INFO L226 Difference]: Without dead ends: 301 [2024-11-09 06:34:14,340 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 06:34:14,341 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 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 06:34:14,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:34:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-09 06:34:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-09 06:34:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 274 states have (on average 1.1934306569343065) internal successors, (327), 286 states have internal predecessors, (327), 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 06:34:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 347 transitions. [2024-11-09 06:34:14,351 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 347 transitions. Word has length 50 [2024-11-09 06:34:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:14,352 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 347 transitions. [2024-11-09 06:34:14,352 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 06:34:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 347 transitions. [2024-11-09 06:34:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 06:34:14,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:14,353 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, 1] [2024-11-09 06:34:14,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (44)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:14,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:14,554 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:14,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -512624477, now seen corresponding path program 1 times [2024-11-09 06:34:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615417435] [2024-11-09 06:34:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:14,556 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 06:34:14,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:14,557 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:14,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (45)] Waiting until timeout for monitored process [2024-11-09 06:34:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:14,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:34:14,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:34:15,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:34:15,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615417435] [2024-11-09 06:34:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615417435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:34:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:34:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:34:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662824645] [2024-11-09 06:34:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:34:15,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:34:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:34:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:34:15,463 INFO L87 Difference]: Start difference. First operand 301 states and 347 transitions. Second operand has 5 states, 4 states have (on average 10.25) 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 06:34:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:15,698 INFO L93 Difference]: Finished difference Result 306 states and 344 transitions. [2024-11-09 06:34:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:34:15,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) 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 51 [2024-11-09 06:34:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:15,701 INFO L225 Difference]: With dead ends: 306 [2024-11-09 06:34:15,701 INFO L226 Difference]: Without dead ends: 306 [2024-11-09 06:34:15,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:34:15,702 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:15,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 130 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:34:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-09 06:34:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 300. [2024-11-09 06:34:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 274 states have (on average 1.167883211678832) internal successors, (320), 285 states have internal predecessors, (320), 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 06:34:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 340 transitions. [2024-11-09 06:34:15,712 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 340 transitions. Word has length 51 [2024-11-09 06:34:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:15,713 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 340 transitions. [2024-11-09 06:34:15,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) 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 06:34:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 340 transitions. [2024-11-09 06:34:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 06:34:15,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:15,715 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, 1, 1] [2024-11-09 06:34:15,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (45)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:15,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:15,916 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:15,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1288510472, now seen corresponding path program 1 times [2024-11-09 06:34:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206553353] [2024-11-09 06:34:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:15,917 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 06:34:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:15,921 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:15,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:16,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:34:16,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:16,055 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 06:34:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:34:16,361 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:34:16,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206553353] [2024-11-09 06:34:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206553353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:34:16,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:34:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:34:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056532835] [2024-11-09 06:34:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:34:16,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:34:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:34:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:34:16,364 INFO L87 Difference]: Start difference. First operand 300 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 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 06:34:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:16,692 INFO L93 Difference]: Finished difference Result 313 states and 348 transitions. [2024-11-09 06:34:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:34:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 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 52 [2024-11-09 06:34:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:16,694 INFO L225 Difference]: With dead ends: 313 [2024-11-09 06:34:16,694 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 06:34:16,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 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 06:34:16,695 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:16,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:34:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 06:34:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 300. [2024-11-09 06:34:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 274 states have (on average 1.1569343065693432) internal successors, (317), 285 states have internal predecessors, (317), 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 06:34:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 337 transitions. [2024-11-09 06:34:16,704 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 337 transitions. Word has length 52 [2024-11-09 06:34:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:16,705 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 337 transitions. [2024-11-09 06:34:16,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 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 06:34:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 337 transitions. [2024-11-09 06:34:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 06:34:16,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:16,706 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 06:34:16,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:16,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:16,907 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:16,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1249250113, now seen corresponding path program 1 times [2024-11-09 06:34:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502834744] [2024-11-09 06:34:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:16,908 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 06:34:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:16,909 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:16,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:17,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:34:17,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:17,488 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 06:34:17,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:34:17,618 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 06:34:17,809 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |parse_input_c1_~x~0#1.base| (_ bv1 32)) |c_#length|)) is different from true [2024-11-09 06:34:17,939 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:34:17,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:34:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-09 06:34:18,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:19,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:19,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502834744] [2024-11-09 06:34:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502834744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:34:19,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2112292879] [2024-11-09 06:34:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:34:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:34:19,824 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:34:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-09 06:34:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:20,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:34:20,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:20,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:34:20,629 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 06:34:20,875 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:34:20,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:34:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-09 06:34:21,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2112292879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:34:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498623980] [2024-11-09 06:34:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:22,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:34:22,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:34:22,208 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:34:22,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 06:34:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:22,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 06:34:22,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:34:22,875 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 06:34:23,214 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:34:23,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:34:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-09 06:34:23,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498623980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:34:24,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:34:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-09 06:34:24,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916543501] [2024-11-09 06:34:24,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:34:24,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:34:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:34:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=139, Unknown=2, NotChecked=50, Total=240 [2024-11-09 06:34:24,571 INFO L87 Difference]: Start difference. First operand 300 states and 337 transitions. Second operand has 11 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:34:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:26,900 INFO L93 Difference]: Finished difference Result 318 states and 346 transitions. [2024-11-09 06:34:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:34:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-09 06:34:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:26,903 INFO L225 Difference]: With dead ends: 318 [2024-11-09 06:34:26,903 INFO L226 Difference]: Without dead ends: 318 [2024-11-09 06:34:26,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 236 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=246, Invalid=572, Unknown=2, NotChecked=110, Total=930 [2024-11-09 06:34:26,904 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 210 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 38 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:26,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 195 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 156 Invalid, 3 Unknown, 247 Unchecked, 0.9s Time] [2024-11-09 06:34:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-09 06:34:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 300. [2024-11-09 06:34:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 274 states have (on average 1.135036496350365) internal successors, (311), 285 states have internal predecessors, (311), 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 06:34:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 331 transitions. [2024-11-09 06:34:26,914 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 331 transitions. Word has length 55 [2024-11-09 06:34:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:26,914 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 331 transitions. [2024-11-09 06:34:26,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:34:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 331 transitions. [2024-11-09 06:34:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 06:34:26,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:26,916 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:34:26,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-09 06:34:27,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:27,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:27,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:27,517 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:27,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1490126205, now seen corresponding path program 1 times [2024-11-09 06:34:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:27,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528276510] [2024-11-09 06:34:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:27,518 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 06:34:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:27,520 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:27,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:34:27,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:28,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:29,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:29,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528276510] [2024-11-09 06:34:29,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528276510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:29,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755488365] [2024-11-09 06:34:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:29,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:34:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:34:29,435 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:34:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2024-11-09 06:34:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:29,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:34:29,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:30,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1755488365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479751557] [2024-11-09 06:34:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:34:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:34:31,181 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:34:31,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-09 06:34:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:31,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:34:31,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:31,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 06:34:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479751557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:32,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:34:32,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2024-11-09 06:34:32,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261799676] [2024-11-09 06:34:32,867 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:34:32,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:34:32,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:34:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:34:32,868 INFO L87 Difference]: Start difference. First operand 300 states and 331 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:34:34,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:34,251 INFO L93 Difference]: Finished difference Result 307 states and 336 transitions. [2024-11-09 06:34:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:34:34,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2024-11-09 06:34:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:34,254 INFO L225 Difference]: With dead ends: 307 [2024-11-09 06:34:34,254 INFO L226 Difference]: Without dead ends: 307 [2024-11-09 06:34:34,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:34:34,255 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 212 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:34,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 287 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:34:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-09 06:34:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 299. [2024-11-09 06:34:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 274 states have (on average 1.1277372262773722) internal successors, (309), 284 states have internal predecessors, (309), 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 06:34:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 329 transitions. [2024-11-09 06:34:34,265 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 329 transitions. Word has length 59 [2024-11-09 06:34:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:34,265 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 329 transitions. [2024-11-09 06:34:34,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:34:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 329 transitions. [2024-11-09 06:34:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 06:34:34,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:34,267 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:34:34,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:34,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:34,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:34,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:34,868 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:34,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2056826715, now seen corresponding path program 1 times [2024-11-09 06:34:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:34,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798631794] [2024-11-09 06:34:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:34,870 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 06:34:34,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:34,871 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:34,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:35,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:34:35,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:35,624 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-09 06:34:35,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-09 06:34:36,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-09 06:34:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:34:37,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:37,332 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 06:34:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:34:39,291 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798631794] [2024-11-09 06:34:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798631794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1785567623] [2024-11-09 06:34:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:34:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:34:39,293 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:34:39,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2024-11-09 06:34:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:39,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:34:39,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:40,214 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-09 06:34:40,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-09 06:34:41,201 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 06:34:41,202 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 06:34:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:34:41,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:41,709 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 06:34:42,117 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 06:34:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:34:43,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1785567623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:43,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870628304] [2024-11-09 06:34:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:34:43,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:34:43,122 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:34:43,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-09 06:34:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:43,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:34:43,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:43,368 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:34:43,368 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 06:34:44,244 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 06:34:44,244 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 06:34:44,511 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 06:34:44,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:44,672 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 06:34:45,717 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 06:34:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:34:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870628304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:34:46,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:34:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 9, 7, 7] total 28 [2024-11-09 06:34:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407776174] [2024-11-09 06:34:46,175 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:34:46,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 06:34:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:34:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 06:34:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2024-11-09 06:34:46,181 INFO L87 Difference]: Start difference. First operand 299 states and 329 transitions. Second operand has 29 states, 26 states have (on average 7.730769230769231) internal successors, (201), 27 states have internal predecessors, (201), 8 states have call successors, (11), 10 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:34:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:34:47,635 INFO L93 Difference]: Finished difference Result 309 states and 339 transitions. [2024-11-09 06:34:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:34:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 7.730769230769231) internal successors, (201), 27 states have internal predecessors, (201), 8 states have call successors, (11), 10 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 61 [2024-11-09 06:34:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:34:47,637 INFO L225 Difference]: With dead ends: 309 [2024-11-09 06:34:47,637 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 06:34:47,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 330 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 06:34:47,638 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 270 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:34:47,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 90 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:34:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 06:34:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 298. [2024-11-09 06:34:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 274 states have (on average 1.1240875912408759) internal successors, (308), 283 states have internal predecessors, (308), 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 06:34:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 328 transitions. [2024-11-09 06:34:47,646 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 328 transitions. Word has length 61 [2024-11-09 06:34:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:34:47,647 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 328 transitions. [2024-11-09 06:34:47,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 7.730769230769231) internal successors, (201), 27 states have internal predecessors, (201), 8 states have call successors, (11), 10 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:34:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 328 transitions. [2024-11-09 06:34:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 06:34:47,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:34:47,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:34:47,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:47,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:48,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-11-09 06:34:48,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:34:48,249 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:34:48,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:34:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 662881257, now seen corresponding path program 1 times [2024-11-09 06:34:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:34:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942932750] [2024-11-09 06:34:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:48,250 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 06:34:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:34:48,251 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:48,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:34:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:48,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:34:48,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:49,410 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 06:34:49,411 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 06:34:51,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-09 06:34:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:34:51,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:52,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:34:52,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942932750] [2024-11-09 06:34:52,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942932750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:34:52,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979062829] [2024-11-09 06:34:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:34:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:34:52,398 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:34:52,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2024-11-09 06:34:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:52,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:34:52,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:54,006 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-09 06:34:54,006 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 06:34:55,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2024-11-09 06:34:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:34:56,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:34:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979062829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:34:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063544326] [2024-11-09 06:34:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:34:56,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:34:56,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:34:56,804 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:34:56,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-09 06:34:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:34:56,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:34:56,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:34:57,940 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:34:57,940 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 06:34:59,910 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-09 06:34:59,910 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 06:35:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:35:00,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:35:00,638 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 46 treesize of output 34 [2024-11-09 06:35:01,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:35:01,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 48 [2024-11-09 06:35:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:35:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063544326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:35:03,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:35:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12, 12] total 37 [2024-11-09 06:35:03,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545384806] [2024-11-09 06:35:03,755 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 06:35:03,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 06:35:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:35:03,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 06:35:03,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1360, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 06:35:03,757 INFO L87 Difference]: Start difference. First operand 298 states and 328 transitions. Second operand has 39 states, 34 states have (on average 4.5) internal successors, (153), 31 states have internal predecessors, (153), 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 06:35:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:35:06,933 INFO L93 Difference]: Finished difference Result 309 states and 338 transitions. [2024-11-09 06:35:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:35:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 4.5) internal successors, (153), 31 states have internal predecessors, (153), 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 62 [2024-11-09 06:35:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:35:06,935 INFO L225 Difference]: With dead ends: 309 [2024-11-09 06:35:06,935 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 06:35:06,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=395, Invalid=1861, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 06:35:06,937 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 189 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:35:06,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 223 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:35:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 06:35:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 298. [2024-11-09 06:35:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 274 states have (on average 1.1204379562043796) internal successors, (307), 283 states have internal predecessors, (307), 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 06:35:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 327 transitions. [2024-11-09 06:35:06,946 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 327 transitions. Word has length 62 [2024-11-09 06:35:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:35:06,946 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 327 transitions. [2024-11-09 06:35:06,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 4.5) internal successors, (153), 31 states have internal predecessors, (153), 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 06:35:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 327 transitions. [2024-11-09 06:35:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 06:35:06,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:35:06,951 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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 06:35:06,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:35:07,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2024-11-09 06:35:07,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-09 06:35:07,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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=3,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:35:07,553 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:35:07,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:35:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -303369532, now seen corresponding path program 1 times [2024-11-09 06:35:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:35:07,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083594867] [2024-11-09 06:35:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:35:07,554 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 06:35:07,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:35:07,555 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:35:07,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:35:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:35:07,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:35:07,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:35:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:35:09,057 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 06:35:10,127 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:35:10,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:35:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:35:11,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:35:12,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:35:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083594867] [2024-11-09 06:35:12,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083594867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:35:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1234963756] [2024-11-09 06:35:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:35:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:35:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:35:12,683 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:35:12,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2024-11-09 06:35:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:35:13,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:35:13,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:35:14,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:35:14,357 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 06:35:15,174 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:35:15,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:35:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:35:16,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:35:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1234963756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:35:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483840299] [2024-11-09 06:35:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:35:16,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:35:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:35:16,771 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:35:16,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-09 06:35:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:35:16,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:35:16,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:35:18,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:35:18,017 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 06:35:18,885 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:35:18,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-09 06:35:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:35:19,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:35:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483840299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:35:20,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:35:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-09 06:35:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958697292] [2024-11-09 06:35:20,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:35:20,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:35:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:35:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:35:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=220, Unknown=3, NotChecked=0, Total=272 [2024-11-09 06:35:20,450 INFO L87 Difference]: Start difference. First operand 298 states and 327 transitions. Second operand has 12 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:35:22,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:29,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:35,544 WARN L539 Checker$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 06:35:37,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:39,621 WARN L539 Checker$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 06:35:41,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:43,672 WARN L539 Checker$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 06:35:45,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:47,695 WARN L539 Checker$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 06:35:53,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:55,908 WARN L539 Checker$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 06:35:57,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:35:59,921 WARN L539 Checker$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 06:36:06,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:08,230 WARN L539 Checker$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 06:36:10,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:12,283 WARN L539 Checker$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 06:36:14,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:16,318 WARN L539 Checker$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 06:36:18,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:20,376 WARN L539 Checker$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 06:36:22,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:24,386 WARN L539 Checker$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 06:36:26,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:28,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:30,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:32,684 WARN L539 Checker$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 06:36:34,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:36,735 WARN L539 Checker$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 06:36:40,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:42,909 WARN L539 Checker$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 06:36:44,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:46,928 WARN L539 Checker$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 06:36:51,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:55,348 WARN L539 Checker$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 06:36:57,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:36:59,376 WARN L539 Checker$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 06:37:05,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:37:07,559 WARN L539 Checker$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 06:37:09,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:37:11,567 WARN L539 Checker$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 06:37:15,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:37:17,714 WARN L539 Checker$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 06:37:19,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:37:24,065 WARN L539 Checker$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 06:37:26,077 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 06:38:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:38:01,029 INFO L93 Difference]: Finished difference Result 324 states and 350 transitions. [2024-11-09 06:38:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:38:01,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2024-11-09 06:38:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:38:01,031 INFO L225 Difference]: With dead ends: 324 [2024-11-09 06:38:01,031 INFO L226 Difference]: Without dead ends: 324 [2024-11-09 06:38:01,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 68.7s TimeCoverageRelationStatistics Valid=284, Invalid=801, Unknown=37, NotChecked=0, Total=1122 [2024-11-09 06:38:01,032 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 264 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 59 mSolverCounterUnsat, 70 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 70 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:38:01,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 192 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 256 Invalid, 70 Unknown, 0 Unchecked, 94.0s Time] [2024-11-09 06:38:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-09 06:38:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 255. [2024-11-09 06:38:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 236 states have (on average 1.1144067796610169) internal successors, (263), 242 states have internal predecessors, (263), 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 06:38:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 278 transitions. [2024-11-09 06:38:01,040 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 278 transitions. Word has length 62 [2024-11-09 06:38:01,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:01,040 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 278 transitions. [2024-11-09 06:38:01,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:38:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 278 transitions. [2024-11-09 06:38:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 06:38:01,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:01,042 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:38:01,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:01,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:01,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:01,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:38:01,643 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:38:01,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1373729643, now seen corresponding path program 1 times [2024-11-09 06:38:01,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:38:01,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373814664] [2024-11-09 06:38:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:01,644 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 06:38:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:38:01,645 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:38:01,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (62)] Waiting until timeout for monitored process [2024-11-09 06:38:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:01,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:38:01,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:02,145 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 06:38:02,145 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 06:38:02,711 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 06:38:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:02,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:38:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:05,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:38:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373814664] [2024-11-09 06:38:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373814664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:38:05,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1309645230] [2024-11-09 06:38:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:05,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:38:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:38:05,084 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:38:05,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2024-11-09 06:38:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:05,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:38:05,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:05,681 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 06:38:05,681 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 06:38:06,114 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 06:38:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:06,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:38:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1309645230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:38:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497953301] [2024-11-09 06:38:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:38:07,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:38:07,935 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:38:07,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-09 06:38:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:08,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:38:08,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:08,311 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 06:38:08,311 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 06:38:08,779 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 06:38:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:08,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:38:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:38:10,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497953301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:38:10,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:38:10,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2024-11-09 06:38:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172605779] [2024-11-09 06:38:10,617 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:38:10,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 06:38:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:38:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 06:38:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:38:10,618 INFO L87 Difference]: Start difference. First operand 255 states and 278 transitions. Second operand has 18 states, 16 states have (on average 6.375) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:38:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:38:12,445 INFO L93 Difference]: Finished difference Result 268 states and 291 transitions. [2024-11-09 06:38:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:38:12,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.375) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2024-11-09 06:38:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:38:12,446 INFO L225 Difference]: With dead ends: 268 [2024-11-09 06:38:12,446 INFO L226 Difference]: Without dead ends: 268 [2024-11-09 06:38:12,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 352 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2024-11-09 06:38:12,446 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 181 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:38:12,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 262 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:38:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-09 06:38:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 254. [2024-11-09 06:38:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 236 states have (on average 1.1101694915254237) internal successors, (262), 241 states have internal predecessors, (262), 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 06:38:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 277 transitions. [2024-11-09 06:38:12,452 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 277 transitions. Word has length 64 [2024-11-09 06:38:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:12,452 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 277 transitions. [2024-11-09 06:38:12,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.375) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:38:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 277 transitions. [2024-11-09 06:38:12,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 06:38:12,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:12,453 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:38:12,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (62)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:12,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2024-11-09 06:38:12,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-09 06:38:13,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:38:13,054 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-09 06:38:13,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1341765310, now seen corresponding path program 1 times [2024-11-09 06:38:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:38:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645744647] [2024-11-09 06:38:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:13,055 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 06:38:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:38:13,056 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:38:13,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (65)] Waiting until timeout for monitored process [2024-11-09 06:38:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:38:13,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:38:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:38:13,484 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-09 06:38:13,485 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:38:13,486 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2024-11-09 06:38:13,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2024-11-09 06:38:13,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2024-11-09 06:38:13,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2024-11-09 06:38:13,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2024-11-09 06:38:13,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2024-11-09 06:38:13,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2024-11-09 06:38:13,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2024-11-09 06:38:13,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2024-11-09 06:38:13,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2024-11-09 06:38:13,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2024-11-09 06:38:13,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2024-11-09 06:38:13,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2024-11-09 06:38:13,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2024-11-09 06:38:13,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2024-11-09 06:38:13,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 (65)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:13,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 06:38:13,694 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:38:13,768 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:38:13,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:38:13 BoogieIcfgContainer [2024-11-09 06:38:13,771 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:38:13,771 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:38:13,771 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:38:13,772 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:38:13,772 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:32:03" (3/4) ... [2024-11-09 06:38:13,775 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 06:38:13,776 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:38:13,776 INFO L158 Benchmark]: Toolchain (without parser) took 371888.21ms. Allocated memory was 67.1MB in the beginning and 132.1MB in the end (delta: 65.0MB). Free memory was 41.7MB in the beginning and 96.1MB in the end (delta: -54.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,776 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 67.1MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:38:13,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.63ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 41.4MB in the beginning and 57.0MB in the end (delta: -15.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.15ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 54.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,777 INFO L158 Benchmark]: Boogie Preprocessor took 53.44ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 52.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,777 INFO L158 Benchmark]: RCFGBuilder took 759.75ms. Allocated memory is still 90.2MB. Free memory was 52.6MB in the beginning and 58.9MB in the end (delta: -6.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,777 INFO L158 Benchmark]: TraceAbstraction took 370028.06ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 58.5MB in the beginning and 96.1MB in the end (delta: -37.7MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2024-11-09 06:38:13,777 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 132.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:38:13,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 67.1MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.63ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 41.4MB in the beginning and 57.0MB in the end (delta: -15.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.15ms. Allocated memory is still 90.2MB. Free memory was 56.7MB in the beginning and 54.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.44ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 52.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.75ms. Allocated memory is still 90.2MB. Free memory was 52.6MB in the beginning and 58.9MB in the end (delta: -6.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 370028.06ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 58.5MB in the beginning and 96.1MB in the end (delta: -37.7MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 132.1MB. Free memory is still 96.1MB. 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: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 721. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; VAL [commands={6:0}, global={0:0}, state=0] [L722] 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 VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, input={3:0}, state=0] [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={15:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={15:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(state)=0, commands={6:0}, global={15:0}, state=1] [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={15:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(state)=1, commands={6:0}, global={15:0}, state=1] [L692] int i = 0; VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={15:0}, i=0, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={15:0}, i=0, input={4:0}, state=1] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={15:0}, i=0, input={4:0}, state=1] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={15:0}, 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={15:0}, 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={15:0}, 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={15:0}, 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={15:0}, 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={15:0}, i=0, input={4:0}, state=1] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function VAL [\old(input)={4:0}, \old(state)=1, commands={6:0}, global={15:0}, input={4:0}, state=1] [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(state)=1, commands={6:0}, global={15:0}, state=1, x={10:0}] [L706] COND TRUE \read(*global) VAL [\old(state)=1, commands={6:0}, global={15:0}, state=1, x={10:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1] [L695] RET commands[i].function() [L723] RET parse_input("c1") VAL [commands={6:0}, global={10:0}, state=1] [L724] 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 VAL [\old(input)={5:0}, \old(state)=1, commands={6:0}, global={10:0}, input={5:0}, state=1] [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={7:0}] [L706] COND TRUE \read(*global) VAL [\old(state)=1, commands={6:0}, global={10:0}, state=1, x={7:0}] [L708] global = x [L709] state = STATE_2 VAL [\old(state)=1, commands={6:0}, global={7:0}, state=1] [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={7:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={7:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 369.9s, OverallIterations: 32, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 222.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 mSolverCounterUnknown, 5564 SdHoareTripleChecker+Valid, 125.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5564 mSDsluCounter, 7125 SdHoareTripleChecker+Invalid, 123.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 888 IncrementalHoareTripleChecker+Unchecked, 5353 mSDsCounter, 586 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5687 IncrementalHoareTripleChecker+Invalid, 7264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 586 mSolverCounterUnsat, 1772 mSDtfsCounter, 5687 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3773 GetRequests, 3252 SyntacticMatches, 43 SemanticMatches, 478 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 137.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=550occurred in iteration=11, InterpolantAutomatonStates: 315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 31 MinimizatonAttempts, 954 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 123.5s InterpolantComputationTime, 2381 NumberOfCodeBlocks, 2381 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3308 ConstructedInterpolants, 510 QuantifiedInterpolants, 46353 SizeOfPredicates, 228 NumberOfNonLiveVariables, 8928 ConjunctsInSsa, 759 ConjunctsInUnsatCore, 92 InterpolantComputations, 15 PerfectInterpolantSequences, 873/2206 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 06:38:13,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfe783e-7d36-41e2-8c23-86584cb96877/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample