./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/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_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/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 64bit --witnessprinter.graph.data.programhash 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:49:46,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:49:46,618 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-09 04:49:46,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:49:46,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:49:46,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:49:46,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:49:46,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:49:46,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:49:46,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:49:46,650 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:49:46,650 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:49:46,651 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:49:46,651 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:49:46,652 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:49:46,652 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:49:46,653 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:49:46,653 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:49:46,654 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:49:46,654 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:49:46,655 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:49:46,655 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:49:46,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:49:46,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:49:46,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:49:46,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:49:46,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:49:46,658 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:49:46,658 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:49:46,658 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:49:46,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:49:46,659 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:49:46,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:49:46,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:49:46,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:49:46,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:49:46,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:49:46,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:49:46,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:49:46,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:49:46,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:49:46,663 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:49:46,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:49:46,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:49:46,664 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:49:46,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:49:46,665 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_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 [2024-11-09 04:49:46,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:49:46,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:49:46,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:49:46,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:49:46,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:49:46,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i Unable to find full path for "g++" [2024-11-09 04:49:49,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:49:49,278 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:49:49,279 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i [2024-11-09 04:49:49,295 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/data/5a3bef6ba/fdb8ae9f9f1b4d1b8183716ca35d1b94/FLAG191135869 [2024-11-09 04:49:49,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/data/5a3bef6ba/fdb8ae9f9f1b4d1b8183716ca35d1b94 [2024-11-09 04:49:49,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:49:49,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:49:49,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:49:49,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:49:49,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:49:49,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:49:49" (1/1) ... [2024-11-09 04:49:49,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b90b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:49, skipping insertion in model container [2024-11-09 04:49:49,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:49:49" (1/1) ... [2024-11-09 04:49:49,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:49:50,029 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 04:49:50,031 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 04:49:50,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:49:50,054 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:49:50,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:49:50,132 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:49:50,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50 WrapperNode [2024-11-09 04:49:50,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:49:50,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:49:50,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:49:50,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:49:50,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,180 INFO L138 Inliner]: procedures = 111, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-09 04:49:50,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:49:50,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:49:50,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:49:50,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:49:50,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:49:50,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:49:50,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:49:50,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:49:50,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (1/1) ... [2024-11-09 04:49:50,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:49:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:50,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:49:50,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:49:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:49:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:49:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:49:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:49:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:49:50,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:49:50,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:49:50,467 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:49:50,681 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-09 04:49:50,681 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:49:50,732 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:49:50,732 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:49:50,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:49:50 BoogieIcfgContainer [2024-11-09 04:49:50,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:49:50,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:49:50,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:49:50,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:49:50,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:49:49" (1/3) ... [2024-11-09 04:49:50,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3179c16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:49:50, skipping insertion in model container [2024-11-09 04:49:50,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:50" (2/3) ... [2024-11-09 04:49:50,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3179c16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:49:50, skipping insertion in model container [2024-11-09 04:49:50,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:49:50" (3/3) ... [2024-11-09 04:49:50,742 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca-1.i [2024-11-09 04:49:50,758 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:49:50,758 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-09 04:49:50,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:49:50,812 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;@35484ef2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:49:50,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 04:49:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:49:50,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:50,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:49:50,823 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:50,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash 83218, now seen corresponding path program 1 times [2024-11-09 04:49:50,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643298727] [2024-11-09 04:49:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:51,023 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 04:49:51,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:51,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643298727] [2024-11-09 04:49:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643298727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:51,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:51,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:49:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100489848] [2024-11-09 04:49:51,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:51,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:49:51,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:49:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:51,067 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:51,135 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-11-09 04:49:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:49:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:49:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:51,145 INFO L225 Difference]: With dead ends: 17 [2024-11-09 04:49:51,146 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 04:49:51,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 04:49:51,152 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:51,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:49:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 04:49:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 04:49:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-09 04:49:51,185 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2024-11-09 04:49:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:51,185 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-09 04:49:51,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-09 04:49:51,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:49:51,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:51,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:49:51,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:49:51,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:51,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 83256, now seen corresponding path program 1 times [2024-11-09 04:49:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832282358] [2024-11-09 04:49:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:51,437 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 04:49:51,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832282358] [2024-11-09 04:49:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832282358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:49:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739551892] [2024-11-09 04:49:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:51,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:49:51,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:49:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:51,448 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:51,476 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-11-09 04:49:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:49:51,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:49:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:51,477 INFO L225 Difference]: With dead ends: 14 [2024-11-09 04:49:51,477 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 04:49:51,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:51,479 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:51,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 04:49:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 04:49:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 8 states have (on average 1.75) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-11-09 04:49:51,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2024-11-09 04:49:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:51,484 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-11-09 04:49:51,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-11-09 04:49:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:49:51,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:51,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:49:51,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:49:51,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:51,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:51,486 INFO L85 PathProgramCache]: Analyzing trace with hash 83257, now seen corresponding path program 1 times [2024-11-09 04:49:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198971049] [2024-11-09 04:49:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:51,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:51,866 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 04:49:51,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:51,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198971049] [2024-11-09 04:49:51,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198971049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:51,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:49:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931248171] [2024-11-09 04:49:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:51,870 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:51,898 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-11-09 04:49:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:49:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:51,899 INFO L225 Difference]: With dead ends: 13 [2024-11-09 04:49:51,899 INFO L226 Difference]: Without dead ends: 13 [2024-11-09 04:49:51,900 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 04:49:51,901 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:51,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-09 04:49:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-09 04:49:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-09 04:49:51,905 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2024-11-09 04:49:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:51,905 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-11-09 04:49:51,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-09 04:49:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:49:51,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:51,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:49:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:49:51,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:51,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2581801, now seen corresponding path program 1 times [2024-11-09 04:49:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325970728] [2024-11-09 04:49:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:52,020 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 04:49:52,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325970728] [2024-11-09 04:49:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325970728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:52,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:52,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:49:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994455618] [2024-11-09 04:49:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:49:52,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:49:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:52,023 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:52,082 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-11-09 04:49:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:49:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:49:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:52,083 INFO L225 Difference]: With dead ends: 12 [2024-11-09 04:49:52,083 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 04:49:52,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:52,085 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:52,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:49:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 04:49:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 04:49:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-09 04:49:52,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2024-11-09 04:49:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:52,092 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-09 04:49:52,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-09 04:49:52,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:49:52,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,093 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:49:52,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:49:52,094 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:52,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2581802, now seen corresponding path program 1 times [2024-11-09 04:49:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648889691] [2024-11-09 04:49:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:52,228 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 04:49:52,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648889691] [2024-11-09 04:49:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648889691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543317590] [2024-11-09 04:49:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:52,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:52,232 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:52,275 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-09 04:49:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 04:49:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:52,276 INFO L225 Difference]: With dead ends: 18 [2024-11-09 04:49:52,277 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 04:49:52,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:52,279 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:52,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 04:49:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2024-11-09 04:49:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-09 04:49:52,289 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2024-11-09 04:49:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:52,290 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-11-09 04:49:52,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-09 04:49:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 04:49:52,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 04:49:52,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:49:52,291 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:52,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 80035832, now seen corresponding path program 1 times [2024-11-09 04:49:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899474798] [2024-11-09 04:49:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:52,593 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 04:49:52,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899474798] [2024-11-09 04:49:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899474798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:52,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91100847] [2024-11-09 04:49:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:52,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:49:52,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:49:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:49:52,598 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:52,652 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-11-09 04:49:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:49:52,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 04:49:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:52,653 INFO L225 Difference]: With dead ends: 16 [2024-11-09 04:49:52,654 INFO L226 Difference]: Without dead ends: 16 [2024-11-09 04:49:52,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:49:52,656 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:52,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-09 04:49:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-11-09 04:49:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-09 04:49:52,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 5 [2024-11-09 04:49:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:52,663 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-09 04:49:52,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-09 04:49:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 04:49:52,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,667 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 04:49:52,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:49:52,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:52,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 80035831, now seen corresponding path program 1 times [2024-11-09 04:49:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717032626] [2024-11-09 04:49:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:52,797 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 04:49:52,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717032626] [2024-11-09 04:49:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717032626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078803884] [2024-11-09 04:49:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:52,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:52,799 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:52,832 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-11-09 04:49:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:52,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 04:49:52,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:52,833 INFO L225 Difference]: With dead ends: 13 [2024-11-09 04:49:52,833 INFO L226 Difference]: Without dead ends: 13 [2024-11-09 04:49:52,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:52,834 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:52,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-09 04:49:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-09 04:49:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-09 04:49:52,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2024-11-09 04:49:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:52,840 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-11-09 04:49:52,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-09 04:49:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:49:52,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 04:49:52,842 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:52,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -394977522, now seen corresponding path program 1 times [2024-11-09 04:49:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161096380] [2024-11-09 04:49:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161096380] [2024-11-09 04:49:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161096380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532521889] [2024-11-09 04:49:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:53,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:53,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:53,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:53,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:49:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:53,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 04:49:53,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:53,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 10 [2024-11-09 04:49:53,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:53,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 19 [2024-11-09 04:49:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-09 04:49:53,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 04:49:53,821 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 13 treesize of output 9 [2024-11-09 04:49:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532521889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:49:53,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49324905] [2024-11-09 04:49:53,864 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:49:53,864 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:49:53,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:49:53,874 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:49:53,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:49:55,302 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:49:55,946 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '291#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_18| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_19| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_19|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_19|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_18|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_18|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:49:55,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:49:55,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:55,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-09 04:49:55,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312941668] [2024-11-09 04:49:55,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:55,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:49:55,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:55,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:49:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:49:55,949 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:56,195 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-11-09 04:49:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:49:56,196 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 04:49:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:56,197 INFO L225 Difference]: With dead ends: 20 [2024-11-09 04:49:56,197 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 04:49:56,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-09 04:49:56,198 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:56,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:49:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 04:49:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2024-11-09 04:49:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-09 04:49:56,202 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2024-11-09 04:49:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:56,202 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-09 04:49:56,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-09 04:49:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 04:49:56,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:56,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:56,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:49:56,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 04:49:56,404 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:56,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 640597511, now seen corresponding path program 1 times [2024-11-09 04:49:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268317031] [2024-11-09 04:49:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:56,549 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 04:49:56,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268317031] [2024-11-09 04:49:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268317031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:49:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821230270] [2024-11-09 04:49:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:56,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:56,553 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:56,574 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-11-09 04:49:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:56,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 04:49:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:56,576 INFO L225 Difference]: With dead ends: 14 [2024-11-09 04:49:56,576 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 04:49:56,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:56,578 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:56,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 04:49:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 04:49:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-09 04:49:56,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-09 04:49:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:56,584 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-09 04:49:56,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-09 04:49:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 04:49:56,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:56,585 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:56,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:49:56,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:49:56,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash 640598676, now seen corresponding path program 1 times [2024-11-09 04:49:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:56,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353168380] [2024-11-09 04:49:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:56,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:57,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353168380] [2024-11-09 04:49:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353168380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360889436] [2024-11-09 04:49:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:57,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:57,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:57,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:57,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:49:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:57,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 04:49:57,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:57,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-09 04:49:57,283 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 8 treesize of output 1 [2024-11-09 04:49:57,300 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 10 treesize of output 8 [2024-11-09 04:49:57,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 04:49:57,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:57,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-09 04:49:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:57,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:57,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-09 04:49:57,870 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 14 treesize of output 12 [2024-11-09 04:49:57,937 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:49:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360889436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:49:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1021150341] [2024-11-09 04:49:57,979 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:49:57,979 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:49:57,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:49:57,980 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:49:57,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:49:58,893 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:49:59,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '431#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (= |ULTIMATE.start_cstrcpy_#t~mem2#1| (select (select |#memory_int| |ULTIMATE.start_cstrcpy_~from#1.base|) |ULTIMATE.start_cstrcpy_~from#1.offset|)) (= (select |#valid| |ULTIMATE.start_cstrcpy_~from#1.base|) 1) (exists ((|v_ULTIMATE.start_cstrcpy_~to#1.offset_23| Int) (|v_ULTIMATE.start_cstrcpy_~to#1.base_24| Int)) (and (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~to#1.base_24|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~to#1.base_24|) |v_ULTIMATE.start_cstrcpy_~to#1.offset_23|) (<= 0 |v_ULTIMATE.start_cstrcpy_~to#1.offset_23|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (<= (+ |ULTIMATE.start_cstrcpy_~from#1.offset| 1) (select |#length| |ULTIMATE.start_cstrcpy_~from#1.base|)))' at error location [2024-11-09 04:49:59,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:49:59,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 17 [2024-11-09 04:49:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486214019] [2024-11-09 04:49:59,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:59,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:49:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:49:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:49:59,608 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:00,015 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-11-09 04:50:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:50:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 04:50:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:00,016 INFO L225 Difference]: With dead ends: 13 [2024-11-09 04:50:00,016 INFO L226 Difference]: Without dead ends: 13 [2024-11-09 04:50:00,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-09 04:50:00,017 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:00,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:50:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-09 04:50:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2024-11-09 04:50:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-11-09 04:50:00,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2024-11-09 04:50:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:00,020 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-11-09 04:50:00,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-11-09 04:50:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:50:00,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:00,021 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-09 04:50:00,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:50:00,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 04:50:00,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:50:00,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1435003562, now seen corresponding path program 2 times [2024-11-09 04:50:00,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:00,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280797634] [2024-11-09 04:50:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:00,753 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 04:50:00,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280797634] [2024-11-09 04:50:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280797634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671502396] [2024-11-09 04:50:00,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:50:00,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:00,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:00,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:50:00,841 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 04:50:00,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:50:00,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 04:50:00,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:00,852 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 10 treesize of output 8 [2024-11-09 04:50:00,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:50:00,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:50:01,119 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-09 04:50:01,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 23 [2024-11-09 04:50:01,209 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 04:50:01,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:01,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:01,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2024-11-09 04:50:01,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 04:50:01,538 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 7 treesize of output 3 [2024-11-09 04:50:01,547 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 0 case distinctions, treesize of input 35 treesize of output 29 [2024-11-09 04:50:01,555 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 21 treesize of output 17 [2024-11-09 04:50:01,645 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 04:50:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671502396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:01,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2098033464] [2024-11-09 04:50:01,647 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:50:01,647 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:01,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:50:01,648 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:50:01,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:50:02,467 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:50:03,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '547#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_32| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_33| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_32|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_33|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_33|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_32|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:50:03,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:50:03,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:50:03,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-09 04:50:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442108597] [2024-11-09 04:50:03,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:03,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 04:50:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 04:50:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=658, Unknown=7, NotChecked=0, Total=756 [2024-11-09 04:50:03,106 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:03,651 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-11-09 04:50:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:50:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 04:50:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:03,652 INFO L225 Difference]: With dead ends: 19 [2024-11-09 04:50:03,652 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 04:50:03,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=1090, Unknown=7, NotChecked=0, Total=1260 [2024-11-09 04:50:03,654 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:03,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:50:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 04:50:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-11-09 04:50:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-09 04:50:03,656 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2024-11-09 04:50:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:03,656 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-11-09 04:50:03,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-09 04:50:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:50:03,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:03,657 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2024-11-09 04:50:03,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:03,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 04:50:03,861 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:50:03,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1349472298, now seen corresponding path program 3 times [2024-11-09 04:50:03,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:03,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18214199] [2024-11-09 04:50:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:04,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18214199] [2024-11-09 04:50:04,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18214199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720884772] [2024-11-09 04:50:04,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:50:04,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:04,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:04,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:04,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:50:04,748 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:50:04,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:50:04,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 04:50:04,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:04,761 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 10 treesize of output 8 [2024-11-09 04:50:04,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:50:04,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:50:05,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:50:05,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:50:05,460 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-11-09 04:50:05,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 39 [2024-11-09 04:50:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:05,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:06,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:06,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 60 [2024-11-09 04:50:06,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 80 [2024-11-09 04:50:06,556 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 7 treesize of output 3 [2024-11-09 04:50:06,561 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 7 treesize of output 3 [2024-11-09 04:50:06,564 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 7 treesize of output 3 [2024-11-09 04:50:06,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 63 [2024-11-09 04:50:06,588 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 21 treesize of output 17 [2024-11-09 04:50:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720884772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1446803001] [2024-11-09 04:50:06,717 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:50:06,717 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:06,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:50:06,718 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:50:06,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:50:07,395 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:50:07,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '605#true' at error location [2024-11-09 04:50:07,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:50:07,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:50:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 14] total 32 [2024-11-09 04:50:07,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654623498] [2024-11-09 04:50:07,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:07,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 04:50:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 04:50:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1150, Unknown=32, NotChecked=0, Total=1332 [2024-11-09 04:50:07,851 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:09,524 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2024-11-09 04:50:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 04:50:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:50:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:09,525 INFO L225 Difference]: With dead ends: 31 [2024-11-09 04:50:09,525 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 04:50:09,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=364, Invalid=2458, Unknown=40, NotChecked=0, Total=2862 [2024-11-09 04:50:09,527 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 21 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:09,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 360 Invalid, 17 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:50:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 04:50:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-09 04:50:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-11-09 04:50:09,531 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2024-11-09 04:50:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:09,531 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-11-09 04:50:09,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-11-09 04:50:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:50:09,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:09,532 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1] [2024-11-09 04:50:09,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:09,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:09,734 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:50:09,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1255228630, now seen corresponding path program 4 times [2024-11-09 04:50:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918535493] [2024-11-09 04:50:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:09,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:11,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918535493] [2024-11-09 04:50:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918535493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412878487] [2024-11-09 04:50:11,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:50:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:11,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:11,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:50:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:11,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-09 04:50:11,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:11,416 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 10 treesize of output 8 [2024-11-09 04:50:11,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 04:50:11,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-09 04:50:11,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2024-11-09 04:50:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 35 [2024-11-09 04:50:12,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 43 [2024-11-09 04:50:12,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 51 [2024-11-09 04:50:13,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 59 [2024-11-09 04:50:13,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 86 treesize of output 67 [2024-11-09 04:50:13,732 INFO L349 Elim1Store]: treesize reduction 28, result has 68.5 percent of original size [2024-11-09 04:50:13,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 88 treesize of output 95 [2024-11-09 04:50:13,746 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 04:50:13,835 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 04:50:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:14,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:17,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:17,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 108 [2024-11-09 04:50:17,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 172 [2024-11-09 04:50:17,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 195 [2024-11-09 04:50:17,920 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 11 treesize of output 7 [2024-11-09 04:50:17,937 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 11 treesize of output 7 [2024-11-09 04:50:17,966 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 11 treesize of output 7 [2024-11-09 04:50:17,989 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 11 treesize of output 7 [2024-11-09 04:50:18,009 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 11 treesize of output 7 [2024-11-09 04:50:18,026 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 15 treesize of output 11 [2024-11-09 04:50:18,043 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 11 treesize of output 7 [2024-11-09 04:50:18,059 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 11 treesize of output 7 [2024-11-09 04:50:18,135 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 04:50:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412878487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:18,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1621802808] [2024-11-09 04:50:18,281 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:50:18,281 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:18,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:50:18,281 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:50:18,281 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:50:18,971 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:50:19,951 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1045#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_65| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_66| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_66|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_65|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_65|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_66|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:50:19,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:50:19,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:50:19,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 26] total 56 [2024-11-09 04:50:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551009438] [2024-11-09 04:50:19,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:19,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 04:50:19,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 04:50:19,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=3390, Unknown=136, NotChecked=0, Total=3906 [2024-11-09 04:50:19,955 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:24,887 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~from#1.base|)) (.cse46 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 6)) (.cse42 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 5)) (.cse47 (+ 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) (.cse30 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 8)) (.cse41 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 4)) (.cse44 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 3)) (.cse18 (select |c_#length| |c_ULTIMATE.start_cstrcpy_~from#1.base|)) (.cse45 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 2)) (.cse43 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 1))) (let ((.cse0 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse6 (forall ((v_ArrVal_189 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43)))) (.cse7 (and (<= .cse44 .cse18) (<= 0 .cse45))) (.cse34 (forall ((v_ArrVal_185 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_185) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse35 (forall ((v_ArrVal_187 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_187) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse41)))) (.cse36 (and (<= 0 .cse47) (<= .cse30 .cse18))) (.cse37 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse42) 0))) (.cse38 (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_186) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse39 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse46) 0))) (.cse40 (forall ((v_ArrVal_184 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_184) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse2 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse3 (and (<= .cse41 .cse18) (<= 0 .cse44))) (.cse33 (= (select .cse4 .cse43) 0)) (.cse25 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse26 (forall ((v_ArrVal_187 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_187) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse42) 0))) (.cse27 (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_186) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse41) 0))) (.cse28 (forall ((v_ArrVal_183 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_183) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse29 (forall ((v_ArrVal_184 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_184) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse31 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse46) 0))) (.cse32 (forall ((v_ArrVal_185 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_185) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse19 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse41) 0))) (.cse20 (forall ((v_ArrVal_187 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_187) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse21 (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_186) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse22 (forall ((v_ArrVal_185 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_185) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse23 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse42) 0))) (.cse24 (and (<= .cse47 .cse18) (<= 0 .cse46))) (.cse8 (forall ((v_ArrVal_187 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_187) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse5 (= (select .cse4 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) 0)) (.cse9 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse10 (and (<= 0 .cse42) (<= .cse46 .cse18))) (.cse11 (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_186) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse12 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse41) 0))) (.cse13 (forall ((v_ArrVal_188 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_188) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse14 (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse15 (forall ((v_ArrVal_187 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_187) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse43) 0))) (.cse16 (and (<= 0 .cse41) (<= .cse42 .cse18))) (.cse1 (= |c_ULTIMATE.start_cstrcpy_#t~mem2#1| 0))) (and (or .cse0 .cse1 .cse2 .cse3) (= 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) (not (= (select .cse4 (+ (- 2) |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) 0)) (<= 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) (or .cse5 .cse6 .cse7) (or .cse8 .cse9 .cse10 .cse11 .cse12 .cse1) (not (= (select .cse4 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 4))) 0)) (not (= (select .cse4 (+ (- 1) |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) 0)) (not (= (select .cse4 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 7))) 0)) (not (= (select .cse4 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 6))) 0)) (or .cse13 .cse14 .cse15 .cse16 .cse5) (or .cse5 .cse0 .cse2 .cse3) (exists ((|v_ULTIMATE.start_main_~nondetString~0#1.offset_31| Int) (|v_ULTIMATE.start_main_~length2~0#1_51| Int)) (let ((.cse17 (+ |v_ULTIMATE.start_main_~nondetString~0#1.offset_31| |v_ULTIMATE.start_main_~length2~0#1_51|))) (and (<= 1 .cse17) (= (select .cse4 (+ (- 1) |v_ULTIMATE.start_main_~nondetString~0#1.offset_31| |v_ULTIMATE.start_main_~length2~0#1_51|)) 0) (<= |v_ULTIMATE.start_main_~nondetString~0#1.offset_31| 0) (<= .cse17 .cse18) (<= |c_ULTIMATE.start_cstrcpy_~from#1.offset| (+ |v_ULTIMATE.start_main_~nondetString~0#1.offset_31| 7))))) (not (= (select .cse4 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 5))) 0)) (or .cse19 .cse20 .cse21 .cse22 .cse1 .cse23 .cse24) (or .cse25 .cse26 .cse27 .cse28 .cse29 (and (<= 0 .cse30) (<= (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 9) .cse18)) .cse1 .cse31 .cse32) (or .cse7 .cse1 .cse33) (or .cse6 .cse7 .cse1) (or .cse34 .cse35 .cse36 .cse37 .cse5 .cse38 .cse39 .cse40) (or .cse34 .cse35 .cse36 .cse37 .cse38 .cse39 .cse1 .cse40) (or .cse1 .cse2 .cse3 .cse33) (or .cse25 .cse5 .cse26 .cse27 (< |c_ULTIMATE.start_cstrcpy_~from#1.offset| 0) .cse28 .cse29 (< .cse30 .cse18) .cse31 .cse32) (or .cse19 .cse20 .cse5 .cse21 .cse22 .cse23 .cse24) (not (= (select .cse4 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 3))) 0)) (or (< 8 .cse18) (and (= .cse18 8) .cse1)) (or .cse8 .cse5 .cse9 .cse10 .cse11 .cse12) (or .cse13 .cse14 .cse15 .cse16 .cse1)))) is different from true [2024-11-09 04:50:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:29,217 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2024-11-09 04:50:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 04:50:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 04:50:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:29,218 INFO L225 Difference]: With dead ends: 55 [2024-11-09 04:50:29,218 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 04:50:29,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1058, Invalid=8678, Unknown=168, NotChecked=196, Total=10100 [2024-11-09 04:50:29,221 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 76 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 39 mSolverCounterUnsat, 68 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 68 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:29,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 3 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 920 Invalid, 68 Unknown, 46 Unchecked, 1.5s Time] [2024-11-09 04:50:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 04:50:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-09 04:50:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2024-11-09 04:50:29,225 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 28 [2024-11-09 04:50:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:29,226 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2024-11-09 04:50:29,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2024-11-09 04:50:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 04:50:29,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:29,227 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1] [2024-11-09 04:50:29,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:29,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 04:50:29,428 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:50:29,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:29,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1089203926, now seen corresponding path program 5 times [2024-11-09 04:50:29,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815838152] [2024-11-09 04:50:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:32,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815838152] [2024-11-09 04:50:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815838152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030054812] [2024-11-09 04:50:32,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:50:32,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:32,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:32,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:50:32,746 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-09 04:50:32,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:50:32,752 WARN L253 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 227 conjuncts are in the unsatisfiable core [2024-11-09 04:50:32,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:32,764 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 10 treesize of output 8 [2024-11-09 04:50:32,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:50:32,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:50:33,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:50:33,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:50:33,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 04:50:33,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 04:50:34,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 04:50:34,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 04:50:34,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 04:50:35,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 04:50:35,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 04:50:36,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 04:50:36,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 04:50:37,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 04:50:37,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 04:50:38,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 04:50:38,644 INFO L349 Elim1Store]: treesize reduction 60, result has 53.5 percent of original size [2024-11-09 04:50:38,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 120 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 16 case distinctions, treesize of input 137 treesize of output 135 [2024-11-09 04:50:38,656 WARN L672 sPolynomialRelations]: Constructing 65536(two to the power of 16 dual juncts. [2024-11-09 04:50:41,701 WARN L672 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts. [2024-11-09 04:50:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:43,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:12,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:12,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 359 treesize of output 204 [2024-11-09 04:51:12,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 388 treesize of output 356 [2024-11-09 04:51:12,134 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 7 treesize of output 3 [2024-11-09 04:51:12,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 267 [2024-11-09 04:51:12,210 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 15 treesize of output 11 [2024-11-09 04:51:12,383 WARN L672 sPolynomialRelations]: Constructing 65536(two to the power of 16 dual juncts. [2024-11-09 04:51:15,389 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 7 treesize of output 3 [2024-11-09 04:51:15,392 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 7 treesize of output 3 [2024-11-09 04:51:15,394 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 7 treesize of output 3 [2024-11-09 04:51:15,397 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 7 treesize of output 3 [2024-11-09 04:51:15,400 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 7 treesize of output 3 [2024-11-09 04:51:15,404 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 7 treesize of output 3 [2024-11-09 04:51:15,407 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 7 treesize of output 3 [2024-11-09 04:51:15,410 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 7 treesize of output 3 [2024-11-09 04:51:15,414 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 7 treesize of output 3 [2024-11-09 04:51:15,417 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 7 treesize of output 3 [2024-11-09 04:51:15,419 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 7 treesize of output 3 [2024-11-09 04:51:15,422 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 7 treesize of output 3 [2024-11-09 04:51:15,425 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 7 treesize of output 3 [2024-11-09 04:51:15,427 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 7 treesize of output 3 [2024-11-09 04:51:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030054812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [123126833] [2024-11-09 04:51:15,596 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:51:15,596 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:51:15,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:51:15,596 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:51:15,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:51:16,242 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:51:18,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1645#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_102| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_103| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_102|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_103|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_102|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_103|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:51:18,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:51:18,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:51:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 35, 50] total 103 [2024-11-09 04:51:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249899111] [2024-11-09 04:51:18,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:18,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-09 04:51:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-09 04:51:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=10100, Unknown=659, NotChecked=0, Total=11990 [2024-11-09 04:51:18,177 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 104 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 104 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:27,398 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse17 (select |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~from#1.base|))) (let ((.cse10 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 15)) (.cse5 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 14)) (.cse7 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 9)) (.cse9 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 13)) (.cse11 (select |c_#length| |c_ULTIMATE.start_cstrcpy_~from#1.base|)) (.cse3 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 12)) (.cse4 (= (select .cse17 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) 0)) (.cse2 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 2)) (.cse15 (+ 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) (.cse13 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 10)) (.cse14 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 11)) (.cse8 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 6)) (.cse12 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 1)) (.cse1 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 3)) (.cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 8)) (.cse16 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 5))) (and (or (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (forall ((v_ArrVal_272 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_272) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_271) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse3) 0)) .cse4 (< .cse5 0) (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_273) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse9) 0)) (< .cse10 .cse11) (forall ((v_ArrVal_270 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_270) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13))) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse5) 0)) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse14) 0)) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0))) (or (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) .cse4 (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16))) (< .cse0 .cse11) (< .cse15 0) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0))) (or .cse4 (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (< .cse16 .cse11) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (< .cse6 0) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0))) (not (= (select .cse17 0) 0)) (= |c_ULTIMATE.start_cstrcpy_~from#1.offset| 15) (not (= (select .cse17 14) 0)) (not (= (select .cse17 13) 0)) (or (< .cse7 0) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) .cse4 (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (< .cse13 .cse11) (forall ((v_ArrVal_277 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2))) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0))) (or (< .cse8 0) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) .cse4 (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (< .cse15 .cse11)) (or .cse4 (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (< .cse1 0) (< .cse6 .cse11) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0))) (or (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (< .cse2 .cse11) .cse4 (< .cse12 0)) (or (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) .cse4 (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (< .cse16 0) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (< .cse8 .cse11) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0))) (not (= (select .cse17 11) 0)) (not (= (select .cse17 4) 0)) (not (= 0 (select .cse17 9))) (not (= (select .cse17 6) 0)) (or (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (< .cse14 0) .cse4 (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse14) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (< .cse3 .cse11) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13) 0)) (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_273) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0))) (or (< .cse7 .cse11) (forall ((v_ArrVal_285 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15))) .cse4 (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (< .cse0 0) (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0))) (not (= (select .cse17 7) 0)) (exists ((|v_ULTIMATE.start_main_~length2~0#1_55| Int)) (and (<= |v_ULTIMATE.start_main_~length2~0#1_55| .cse11) (= (select .cse17 (+ (- 1) |v_ULTIMATE.start_main_~length2~0#1_55|)) 0) (<= 1 |v_ULTIMATE.start_main_~length2~0#1_55|))) (or (forall ((v_ArrVal_287 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse9))) (forall ((v_ArrVal_272 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_272) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_273) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) .cse4 (< .cse5 .cse11) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (< .cse9 0) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse14) 0)) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_271) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse3) 0)) (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0))) (not (= (select .cse17 3) 0)) (or (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) .cse4 (< .cse1 .cse11) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (< .cse2 0)) (not (= (select .cse17 12) 0)) (not (= (select .cse17 8) 0)) (or (forall ((v_ArrVal_272 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_272) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse9) 0)) (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_271) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) .cse4 (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse14) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse10) 0)) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (< (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 16) .cse11) (< .cse10 0) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse3) 0)) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse5) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13))) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_273) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_270 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_270) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_268 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_268) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0))) (not (= (select .cse17 10) 0)) (or (forall ((v_ArrVal_278 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6))) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) .cse4 (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (< .cse13 0) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (< .cse14 .cse11) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13) 0)) (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0))) (not (= (select .cse17 5) 0)) (not (= (select .cse17 2) 0)) (not (= (select .cse17 1) 0)) (or (forall ((v_ArrVal_283 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_283) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse7) 0)) (< .cse9 .cse11) (forall ((v_ArrVal_287 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_287) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse3) 0)) (< .cse3 0) .cse4 (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_273) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse2) 0)) (forall ((v_ArrVal_280 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_280) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse15) 0)) (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_284) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse13) 0)) (forall ((v_ArrVal_285 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_285) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse14) 0)) (forall ((v_ArrVal_278 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_278) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse8) 0)) (forall ((v_ArrVal_272 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_272) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse12) 0)) (forall ((v_ArrVal_274 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_274) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse1) 0)) (forall ((v_ArrVal_276 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_276) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse6) 0)) (forall ((v_ArrVal_282 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_282) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse0) 0)) (forall ((v_ArrVal_277 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_277) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse16) 0)))))) is different from true [2024-11-09 04:52:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:42,070 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2024-11-09 04:52:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-09 04:52:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 104 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-09 04:52:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:42,072 INFO L225 Difference]: With dead ends: 103 [2024-11-09 04:52:42,072 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 04:52:42,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6808 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=3590, Invalid=30316, Unknown=880, NotChecked=370, Total=35156 [2024-11-09 04:52:42,079 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 170 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 65 mSolverCounterUnsat, 383 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 383 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:42,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 4 Invalid, 3611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3078 Invalid, 383 Unknown, 85 Unchecked, 11.5s Time] [2024-11-09 04:52:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 04:52:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-11-09 04:52:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2024-11-09 04:52:42,085 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 52 [2024-11-09 04:52:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:42,086 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2024-11-09 04:52:42,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.4951456310679612) internal successors, (154), 104 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2024-11-09 04:52:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 04:52:42,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:42,091 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1] [2024-11-09 04:52:42,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:42,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 04:52:42,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:52:42,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -377963222, now seen corresponding path program 6 times [2024-11-09 04:52:42,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:52:42,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024050021] [2024-11-09 04:52:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:52:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:50,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:52:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024050021] [2024-11-09 04:52:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024050021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824499888] [2024-11-09 04:52:50,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:52:50,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:50,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:50,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:50,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:52:58,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:52:58,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:59,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 374 conjuncts are in the unsatisfiable core [2024-11-09 04:52:59,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:59,030 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 10 treesize of output 8 [2024-11-09 04:52:59,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:52:59,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:53:00,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:53:00,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:53:00,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 04:53:01,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 04:53:01,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 04:53:02,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 04:53:03,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 04:53:03,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 04:53:04,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 04:53:04,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 04:53:05,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 04:53:06,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 04:53:07,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 04:53:08,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 04:53:09,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 04:53:09,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 04:53:11,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 04:53:12,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 04:53:13,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 04:53:14,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 04:53:15,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144 [2024-11-09 04:53:17,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 201 treesize of output 150 [2024-11-09 04:53:18,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 209 treesize of output 156 [2024-11-09 04:53:19,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 162 [2024-11-09 04:53:21,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 225 treesize of output 168 [2024-11-09 04:53:22,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 174 [2024-11-09 04:53:24,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 241 treesize of output 180 [2024-11-09 04:53:25,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 249 treesize of output 186 [2024-11-09 04:53:27,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 257 treesize of output 192 [2024-11-09 04:53:29,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 265 treesize of output 198 [2024-11-09 04:53:31,379 INFO L349 Elim1Store]: treesize reduction 124, result has 51.8 percent of original size [2024-11-09 04:53:31,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 33 select indices, 33 select index equivalence classes, 496 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 32 case distinctions, treesize of input 265 treesize of output 263 [2024-11-09 04:53:31,414 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 31 dual juncts. [2024-11-09 04:53:31,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:53:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240608396] [2024-11-09 04:53:31,417 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:53:31,417 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:53:31,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:53:31,417 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:53:31,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:53:31,970 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:53:34,725 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2404#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_137| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_138| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_137|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_138|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_138|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_137|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:53:34,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:53:34,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:53:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2024-11-09 04:53:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729950689] [2024-11-09 04:53:34,725 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:53:34,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 04:53:34,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:53:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 04:53:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=11514, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 04:53:34,728 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:39,574 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2024-11-09 04:53:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 04:53:39,575 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-09 04:53:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:39,576 INFO L225 Difference]: With dead ends: 106 [2024-11-09 04:53:39,576 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 04:53:39,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=267, Invalid=11943, Unknown=0, NotChecked=0, Total=12210 [2024-11-09 04:53:39,577 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:39,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 04:53:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 04:53:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2024-11-09 04:53:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2024-11-09 04:53:39,584 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 100 [2024-11-09 04:53:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:39,584 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2024-11-09 04:53:39,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 37 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2024-11-09 04:53:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 04:53:39,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:39,586 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1] [2024-11-09 04:53:39,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:39,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 04:53:39,787 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:53:39,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1501873934, now seen corresponding path program 7 times [2024-11-09 04:53:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:53:39,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337616357] [2024-11-09 04:53:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:53:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:47,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:53:47,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337616357] [2024-11-09 04:53:47,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337616357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:53:47,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777703062] [2024-11-09 04:53:47,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:53:47,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:47,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:47,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:47,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:53:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:47,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 346 conjuncts are in the unsatisfiable core [2024-11-09 04:53:47,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:47,395 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 10 treesize of output 8 [2024-11-09 04:53:47,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 04:53:47,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-09 04:53:48,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2024-11-09 04:53:48,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 35 [2024-11-09 04:53:49,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 43 [2024-11-09 04:53:49,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 51 [2024-11-09 04:53:50,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 59 [2024-11-09 04:53:51,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 86 treesize of output 67 [2024-11-09 04:53:51,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 96 treesize of output 75 [2024-11-09 04:53:52,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 106 treesize of output 83 [2024-11-09 04:53:53,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 116 treesize of output 91 [2024-11-09 04:53:54,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 126 treesize of output 99 [2024-11-09 04:53:55,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 136 treesize of output 107 [2024-11-09 04:53:56,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 146 treesize of output 115 [2024-11-09 04:53:57,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 156 treesize of output 123 [2024-11-09 04:53:58,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 166 treesize of output 131 [2024-11-09 04:53:59,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 176 treesize of output 139 [2024-11-09 04:54:00,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 186 treesize of output 147 [2024-11-09 04:54:01,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 196 treesize of output 155 [2024-11-09 04:54:03,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 206 treesize of output 163 [2024-11-09 04:54:04,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 216 treesize of output 171 [2024-11-09 04:54:06,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 226 treesize of output 179 [2024-11-09 04:54:07,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 236 treesize of output 187 [2024-11-09 04:54:09,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 246 treesize of output 195 [2024-11-09 04:54:11,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 256 treesize of output 203 [2024-11-09 04:54:13,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 266 treesize of output 211 [2024-11-09 04:54:15,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 276 treesize of output 219 [2024-11-09 04:54:17,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 286 treesize of output 227 [2024-11-09 04:54:19,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 296 treesize of output 235 [2024-11-09 04:54:21,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 306 treesize of output 243 [2024-11-09 04:54:23,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 316 treesize of output 251 [2024-11-09 04:54:26,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 326 treesize of output 259 [2024-11-09 04:54:28,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 336 treesize of output 267 [2024-11-09 04:54:31,472 INFO L349 Elim1Store]: treesize reduction 128, result has 64.8 percent of original size [2024-11-09 04:54:31,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 528 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 33 case distinctions, treesize of input 338 treesize of output 370 [2024-11-09 04:54:31,496 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 33 dual juncts. [2024-11-09 04:54:31,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:54:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1215206411] [2024-11-09 04:54:31,499 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:54:31,499 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:31,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:31,499 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:31,499 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:54:31,863 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:54:33,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2624#true' at error location [2024-11-09 04:54:33,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:54:33,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:54:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2024-11-09 04:54:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370981423] [2024-11-09 04:54:33,848 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:33,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 04:54:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 04:54:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=11519, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 04:54:33,851 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 38 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:38,133 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2024-11-09 04:54:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 04:54:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-09 04:54:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:38,134 INFO L225 Difference]: With dead ends: 109 [2024-11-09 04:54:38,134 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 04:54:38,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=257, Invalid=11733, Unknown=0, NotChecked=0, Total=11990 [2024-11-09 04:54:38,136 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:38,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 04:54:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 04:54:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2024-11-09 04:54:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2024-11-09 04:54:38,142 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 103 [2024-11-09 04:54:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:38,143 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2024-11-09 04:54:38,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:54:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2024-11-09 04:54:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 04:54:38,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:38,145 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1] [2024-11-09 04:54:38,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 04:54:38,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 04:54:38,345 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:54:38,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1652015786, now seen corresponding path program 8 times [2024-11-09 04:54:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943239743] [2024-11-09 04:54:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:46,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943239743] [2024-11-09 04:54:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943239743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162752219] [2024-11-09 04:54:46,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:46,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:46,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:46,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:55:16,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-09 04:55:16,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:55:16,601 WARN L253 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 444 conjuncts are in the unsatisfiable core [2024-11-09 04:55:16,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:16,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-09 04:55:16,638 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 8 treesize of output 1 [2024-11-09 04:55:16,642 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 10 treesize of output 8 [2024-11-09 04:55:16,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:55:17,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:55:17,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:55:17,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:55:18,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 04:55:18,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 04:55:19,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 04:55:19,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 04:55:20,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 04:55:21,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 04:55:21,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 04:55:22,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 04:55:23,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 04:55:24,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 04:55:24,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 04:55:25,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 04:55:26,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 04:55:27,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 04:55:28,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 04:55:29,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 04:55:31,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 04:55:32,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 04:55:33,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144 [2024-11-09 04:55:34,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 201 treesize of output 150 [2024-11-09 04:55:36,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 209 treesize of output 156 [2024-11-09 04:55:37,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 162 [2024-11-09 04:55:39,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 225 treesize of output 168 [2024-11-09 04:55:40,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 174 [2024-11-09 04:55:42,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 241 treesize of output 180 [2024-11-09 04:55:44,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 249 treesize of output 186 [2024-11-09 04:55:45,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 257 treesize of output 192 [2024-11-09 04:55:47,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 265 treesize of output 198 [2024-11-09 04:55:49,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 273 treesize of output 204 [2024-11-09 04:55:51,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 281 treesize of output 210 [2024-11-09 04:55:52,666 INFO L349 Elim1Store]: treesize reduction 132, result has 51.6 percent of original size [2024-11-09 04:55:52,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 561 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 34 case distinctions, treesize of input 281 treesize of output 279 [2024-11-09 04:55:52,692 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 33 dual juncts. [2024-11-09 04:55:52,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:55:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747078572] [2024-11-09 04:55:52,694 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:55:52,695 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:55:52,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:55:52,695 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:55:52,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:55:53,095 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:55:56,041 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3666#(and (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.base_210| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.offset_209| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_210|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_209|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_210|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_209|))))' at error location [2024-11-09 04:55:56,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:55:56,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:55:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2024-11-09 04:55:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14642900] [2024-11-09 04:55:56,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:56,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 04:55:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:55:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 04:55:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=12612, Unknown=0, NotChecked=0, Total=12882 [2024-11-09 04:55:56,044 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:01,070 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2024-11-09 04:56:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 04:56:01,071 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-09 04:56:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:01,071 INFO L225 Difference]: With dead ends: 112 [2024-11-09 04:56:01,071 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 04:56:01,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=274, Invalid=12836, Unknown=0, NotChecked=0, Total=13110 [2024-11-09 04:56:01,072 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:01,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4139 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 04:56:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 04:56:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2024-11-09 04:56:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2024-11-09 04:56:01,077 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 106 [2024-11-09 04:56:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:01,077 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2024-11-09 04:56:01,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.717948717948718) internal successors, (106), 39 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2024-11-09 04:56:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 04:56:01,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:01,079 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1] [2024-11-09 04:56:01,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:01,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 04:56:01,280 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:56:01,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash -827993714, now seen corresponding path program 9 times [2024-11-09 04:56:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:56:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744251059] [2024-11-09 04:56:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:56:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:08,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:56:08,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744251059] [2024-11-09 04:56:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744251059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:56:08,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282852320] [2024-11-09 04:56:08,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:56:08,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:08,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:08,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 04:56:19,715 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:56:19,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:56:19,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 408 conjuncts are in the unsatisfiable core [2024-11-09 04:56:19,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:19,754 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 10 treesize of output 8 [2024-11-09 04:56:19,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:56:20,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:56:20,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:56:21,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:56:21,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 04:56:21,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 04:56:22,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 04:56:23,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 04:56:23,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 04:56:24,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 04:56:24,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 04:56:25,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 04:56:26,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 04:56:26,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 04:56:27,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 04:56:28,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 04:56:29,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 04:56:30,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 04:56:31,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 04:56:32,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 04:56:33,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 04:56:34,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 04:56:35,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144 [2024-11-09 04:56:37,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 201 treesize of output 150 [2024-11-09 04:56:38,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 209 treesize of output 156 [2024-11-09 04:56:39,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 162 [2024-11-09 04:56:41,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 225 treesize of output 168 [2024-11-09 04:56:42,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 174 [2024-11-09 04:56:44,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 241 treesize of output 180 [2024-11-09 04:56:45,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 249 treesize of output 186 [2024-11-09 04:56:47,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 257 treesize of output 192 [2024-11-09 04:56:49,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 265 treesize of output 198 [2024-11-09 04:56:51,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 273 treesize of output 204 [2024-11-09 04:56:53,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 281 treesize of output 210 [2024-11-09 04:56:55,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 289 treesize of output 216 [2024-11-09 04:56:57,225 INFO L349 Elim1Store]: treesize reduction 136, result has 51.6 percent of original size [2024-11-09 04:56:57,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 36 select indices, 36 select index equivalence classes, 595 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 35 case distinctions, treesize of input 289 treesize of output 287 [2024-11-09 04:56:57,256 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 34 dual juncts. [2024-11-09 04:56:57,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:56:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305735734] [2024-11-09 04:56:57,258 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:56:57,258 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:56:57,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:56:57,258 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:56:57,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:56:57,656 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:57:00,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4324#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_247| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_248| Int)) (and (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_248|) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_248|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_247|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_247|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 04:57:00,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:57:00,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:57:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2024-11-09 04:57:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580495958] [2024-11-09 04:57:00,499 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:57:00,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 04:57:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 04:57:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=13297, Unknown=0, NotChecked=0, Total=13572 [2024-11-09 04:57:00,501 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:57:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:05,482 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2024-11-09 04:57:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 04:57:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-09 04:57:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:05,483 INFO L225 Difference]: With dead ends: 115 [2024-11-09 04:57:05,483 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 04:57:05,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=279, Invalid=13527, Unknown=0, NotChecked=0, Total=13806 [2024-11-09 04:57:05,484 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:05,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 4256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4255 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 04:57:05,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 04:57:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-11-09 04:57:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 112 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:57:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2024-11-09 04:57:05,489 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 109 [2024-11-09 04:57:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:05,490 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2024-11-09 04:57:05,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:57:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2024-11-09 04:57:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 04:57:05,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:05,492 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1] [2024-11-09 04:57:05,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:05,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 04:57:05,692 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:57:05,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash -763582422, now seen corresponding path program 10 times [2024-11-09 04:57:05,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:05,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783548345] [2024-11-09 04:57:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:05,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:13,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783548345] [2024-11-09 04:57:13,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783548345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:57:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632697170] [2024-11-09 04:57:13,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:57:13,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:13,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:57:13,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 04:57:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:13,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 376 conjuncts are in the unsatisfiable core [2024-11-09 04:57:13,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:13,676 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 10 treesize of output 8 [2024-11-09 04:57:13,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 04:57:14,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-09 04:57:14,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2024-11-09 04:57:15,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 35 [2024-11-09 04:57:15,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 43 [2024-11-09 04:57:16,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 51 [2024-11-09 04:57:17,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 59 [2024-11-09 04:57:17,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 86 treesize of output 67 [2024-11-09 04:57:18,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 96 treesize of output 75 [2024-11-09 04:57:19,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 106 treesize of output 83 [2024-11-09 04:57:20,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 116 treesize of output 91 [2024-11-09 04:57:21,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 126 treesize of output 99 [2024-11-09 04:57:22,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 136 treesize of output 107 [2024-11-09 04:57:23,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 146 treesize of output 115 [2024-11-09 04:57:24,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 156 treesize of output 123 [2024-11-09 04:57:25,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 166 treesize of output 131 [2024-11-09 04:57:27,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 176 treesize of output 139 [2024-11-09 04:57:28,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 186 treesize of output 147 [2024-11-09 04:57:30,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 196 treesize of output 155 [2024-11-09 04:57:31,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 206 treesize of output 163 [2024-11-09 04:57:33,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 216 treesize of output 171 [2024-11-09 04:57:35,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 226 treesize of output 179 [2024-11-09 04:57:37,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 236 treesize of output 187 [2024-11-09 04:57:38,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 246 treesize of output 195 [2024-11-09 04:57:40,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 256 treesize of output 203 [2024-11-09 04:57:43,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 266 treesize of output 211 [2024-11-09 04:57:45,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 276 treesize of output 219 [2024-11-09 04:57:47,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 286 treesize of output 227 [2024-11-09 04:57:49,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 296 treesize of output 235 [2024-11-09 04:57:51,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 306 treesize of output 243 [2024-11-09 04:57:54,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 316 treesize of output 251 [2024-11-09 04:57:57,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 326 treesize of output 259 [2024-11-09 04:58:00,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 336 treesize of output 267 [2024-11-09 04:58:02,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 346 treesize of output 275 [2024-11-09 04:58:05,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 356 treesize of output 283 [2024-11-09 04:58:08,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 366 treesize of output 291 [2024-11-09 04:58:11,768 INFO L349 Elim1Store]: treesize reduction 140, result has 64.7 percent of original size [2024-11-09 04:58:11,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 630 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 36 case distinctions, treesize of input 368 treesize of output 403 [2024-11-09 04:58:11,797 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 35 dual juncts. [2024-11-09 04:58:11,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:58:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1157808639] [2024-11-09 04:58:11,800 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:58:11,800 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:58:11,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:58:11,801 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:58:11,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:58:12,172 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:58:14,377 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4560#true' at error location [2024-11-09 04:58:14,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:58:14,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:58:14,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2024-11-09 04:58:14,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393969956] [2024-11-09 04:58:14,377 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:58:14,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 04:58:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:58:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 04:58:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=13765, Unknown=0, NotChecked=0, Total=14042 [2024-11-09 04:58:14,379 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:58:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:20,009 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2024-11-09 04:58:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 04:58:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-09 04:58:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:20,011 INFO L225 Difference]: With dead ends: 118 [2024-11-09 04:58:20,011 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 04:58:20,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=286, Invalid=14234, Unknown=0, NotChecked=0, Total=14520 [2024-11-09 04:58:20,013 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:20,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 4598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-09 04:58:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 04:58:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-09 04:58:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:58:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2024-11-09 04:58:20,017 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 112 [2024-11-09 04:58:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:20,018 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2024-11-09 04:58:20,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 41 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:58:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2024-11-09 04:58:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:58:20,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:20,020 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1] [2024-11-09 04:58:20,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 04:58:20,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:20,221 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:58:20,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1737163762, now seen corresponding path program 11 times [2024-11-09 04:58:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:58:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452160791] [2024-11-09 04:58:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:58:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:58:28,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:58:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452160791] [2024-11-09 04:58:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452160791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:58:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94994725] [2024-11-09 04:58:28,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:58:28,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:28,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:58:28,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:58:28,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 04:58:53,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-11-09 04:58:53,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:58:53,574 WARN L253 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 475 conjuncts are in the unsatisfiable core [2024-11-09 04:58:53,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:53,598 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 10 treesize of output 8 [2024-11-09 04:58:53,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 04:58:54,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 04:58:54,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 04:58:55,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 04:58:55,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 04:58:56,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 04:58:57,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 04:58:57,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 04:58:58,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 04:58:59,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 04:58:59,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 04:59:00,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 04:59:01,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 04:59:02,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 04:59:03,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 04:59:04,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 04:59:05,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 04:59:06,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 04:59:07,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 04:59:08,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 04:59:10,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 04:59:11,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 04:59:13,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144 [2024-11-09 04:59:15,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 201 treesize of output 150 [2024-11-09 04:59:16,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 209 treesize of output 156 [2024-11-09 04:59:18,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 162 [2024-11-09 04:59:20,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 225 treesize of output 168 [2024-11-09 04:59:22,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 174 [2024-11-09 04:59:23,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 241 treesize of output 180 [2024-11-09 04:59:25,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 249 treesize of output 186 [2024-11-09 04:59:27,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 257 treesize of output 192 [2024-11-09 04:59:29,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 265 treesize of output 198 [2024-11-09 04:59:31,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 273 treesize of output 204 [2024-11-09 04:59:33,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 281 treesize of output 210 [2024-11-09 04:59:35,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 289 treesize of output 216 [2024-11-09 04:59:37,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 297 treesize of output 222 [2024-11-09 04:59:40,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 305 treesize of output 228 [2024-11-09 04:59:42,758 INFO L349 Elim1Store]: treesize reduction 144, result has 51.5 percent of original size [2024-11-09 04:59:42,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 38 select indices, 38 select index equivalence classes, 666 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 37 case distinctions, treesize of input 305 treesize of output 303 [2024-11-09 04:59:42,782 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 37 dual juncts. [2024-11-09 04:59:42,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 04:59:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357311919] [2024-11-09 04:59:42,783 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:59:42,783 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:42,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:42,784 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:42,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:43,294 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:47,149 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5695#(and (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_325| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_326| Int)) (and (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_326|) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_326|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_325|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_325|))))' at error location [2024-11-09 04:59:47,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:47,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2024-11-09 04:59:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409547126] [2024-11-09 04:59:47,149 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:47,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 04:59:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 04:59:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=14715, Unknown=0, NotChecked=0, Total=15006 [2024-11-09 04:59:47,151 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 43 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:59:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:54,570 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2024-11-09 04:59:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 04:59:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-09 04:59:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:54,571 INFO L225 Difference]: With dead ends: 121 [2024-11-09 04:59:54,571 INFO L226 Difference]: Without dead ends: 121 [2024-11-09 04:59:54,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=295, Invalid=14957, Unknown=0, NotChecked=0, Total=15252 [2024-11-09 04:59:54,572 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:54,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 4836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 04:59:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-09 04:59:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-11-09 04:59:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:59:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2024-11-09 04:59:54,577 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 115 [2024-11-09 04:59:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:54,577 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2024-11-09 04:59:54,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.738095238095238) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:59:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2024-11-09 04:59:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 04:59:54,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:54,580 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1] [2024-11-09 04:59:54,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 04:59:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:54,780 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 04:59:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1784713814, now seen corresponding path program 12 times [2024-11-09 04:59:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157353412] [2024-11-09 04:59:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:54,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:00:03,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157353412] [2024-11-09 05:00:03,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157353412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085730263] [2024-11-09 05:00:03,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:00:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:03,300 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:03,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:00:29,911 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:00:29,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:29,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 464 conjuncts are in the unsatisfiable core [2024-11-09 05:00:29,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:29,951 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 10 treesize of output 8 [2024-11-09 05:00:30,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 05:00:30,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 05:00:31,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 05:00:31,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 05:00:32,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 05:00:32,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 05:00:33,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 05:00:34,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 05:00:35,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 05:00:35,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 05:00:36,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 05:00:37,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 05:00:38,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 05:00:39,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 05:00:40,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 05:00:41,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 05:00:42,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 05:00:44,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 05:00:45,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 05:00:46,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 05:00:47,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 05:00:49,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 05:00:50,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144 [2024-11-09 05:00:51,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 201 treesize of output 150 [2024-11-09 05:00:53,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 209 treesize of output 156 [2024-11-09 05:00:54,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 162 [2024-11-09 05:00:56,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 225 treesize of output 168 [2024-11-09 05:00:57,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 174 [2024-11-09 05:00:59,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 241 treesize of output 180 [2024-11-09 05:01:01,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 249 treesize of output 186 [2024-11-09 05:01:03,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 257 treesize of output 192 [2024-11-09 05:01:04,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 265 treesize of output 198 [2024-11-09 05:01:06,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 273 treesize of output 204 [2024-11-09 05:01:08,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 281 treesize of output 210 [2024-11-09 05:01:10,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 289 treesize of output 216 [2024-11-09 05:01:12,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 297 treesize of output 222 [2024-11-09 05:01:15,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 305 treesize of output 228 [2024-11-09 05:01:17,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 313 treesize of output 234 [2024-11-09 05:01:20,486 INFO L349 Elim1Store]: treesize reduction 148, result has 51.5 percent of original size [2024-11-09 05:01:20,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 39 select indices, 39 select index equivalence classes, 703 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 38 case distinctions, treesize of input 313 treesize of output 311 [2024-11-09 05:01:20,514 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 37 dual juncts. [2024-11-09 05:01:20,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 05:01:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091211616] [2024-11-09 05:01:20,515 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:01:20,516 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:01:20,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:01:20,516 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:01:20,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:01:20,917 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:01:24,543 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6408#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.offset_366| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.base_367| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_367|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_366|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_367|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_366|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 05:01:24,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:01:24,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:01:24,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2024-11-09 05:01:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603609935] [2024-11-09 05:01:24,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:01:24,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 05:01:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 05:01:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=15701, Unknown=0, NotChecked=0, Total=16002 [2024-11-09 05:01:24,545 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:31,882 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2024-11-09 05:01:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 05:01:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-11-09 05:01:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:31,883 INFO L225 Difference]: With dead ends: 124 [2024-11-09 05:01:31,883 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 05:01:31,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1811 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=305, Invalid=15951, Unknown=0, NotChecked=0, Total=16256 [2024-11-09 05:01:31,885 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5079 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:31,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 5080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5079 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 05:01:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 05:01:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-09 05:01:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 121 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2024-11-09 05:01:31,889 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 118 [2024-11-09 05:01:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:31,889 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2024-11-09 05:01:31,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2024-11-09 05:01:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 05:01:31,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:31,890 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1] [2024-11-09 05:01:31,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:32,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:32,091 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 05:01:32,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1009105266, now seen corresponding path program 13 times [2024-11-09 05:01:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759940894] [2024-11-09 05:01:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:01:40,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759940894] [2024-11-09 05:01:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759940894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684731158] [2024-11-09 05:01:40,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:01:40,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:40,138 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 05:01:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:40,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 406 conjuncts are in the unsatisfiable core [2024-11-09 05:01:40,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:40,749 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 10 treesize of output 8 [2024-11-09 05:01:40,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 05:01:41,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-09 05:01:41,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2024-11-09 05:01:42,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 35 [2024-11-09 05:01:43,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 43 [2024-11-09 05:01:43,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 51 [2024-11-09 05:01:44,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 59 [2024-11-09 05:01:45,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 86 treesize of output 67 [2024-11-09 05:01:46,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 96 treesize of output 75 [2024-11-09 05:01:47,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 106 treesize of output 83 [2024-11-09 05:01:48,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 116 treesize of output 91 [2024-11-09 05:01:49,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 126 treesize of output 99 [2024-11-09 05:01:50,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 136 treesize of output 107 [2024-11-09 05:01:51,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 146 treesize of output 115 [2024-11-09 05:01:52,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 156 treesize of output 123 [2024-11-09 05:01:53,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 166 treesize of output 131 [2024-11-09 05:01:55,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 176 treesize of output 139 [2024-11-09 05:01:56,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 186 treesize of output 147 [2024-11-09 05:01:58,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 196 treesize of output 155 [2024-11-09 05:01:59,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 206 treesize of output 163 [2024-11-09 05:02:01,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 216 treesize of output 171 [2024-11-09 05:02:03,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 226 treesize of output 179 [2024-11-09 05:02:04,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 236 treesize of output 187 [2024-11-09 05:02:06,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 246 treesize of output 195 [2024-11-09 05:02:08,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 256 treesize of output 203 [2024-11-09 05:02:10,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 266 treesize of output 211 [2024-11-09 05:02:13,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 276 treesize of output 219 [2024-11-09 05:02:15,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 286 treesize of output 227 [2024-11-09 05:02:17,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 296 treesize of output 235 [2024-11-09 05:02:20,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 306 treesize of output 243 [2024-11-09 05:02:23,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 316 treesize of output 251 [2024-11-09 05:02:25,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 326 treesize of output 259 [2024-11-09 05:02:28,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 336 treesize of output 267 [2024-11-09 05:02:31,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 346 treesize of output 275 [2024-11-09 05:02:34,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 356 treesize of output 283 [2024-11-09 05:02:37,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 366 treesize of output 291 [2024-11-09 05:02:40,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 376 treesize of output 299 [2024-11-09 05:02:44,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 386 treesize of output 307 [2024-11-09 05:02:47,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 396 treesize of output 315 [2024-11-09 05:02:51,594 INFO L349 Elim1Store]: treesize reduction 152, result has 64.7 percent of original size [2024-11-09 05:02:51,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 40 select indices, 40 select index equivalence classes, 741 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 39 case distinctions, treesize of input 398 treesize of output 436 [2024-11-09 05:02:51,631 WARN L672 sPolynomialRelations]: Constructing 2147483647(two to the power of 38 dual juncts. [2024-11-09 05:02:51,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2024-11-09 05:02:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [770009493] [2024-11-09 05:02:51,633 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:02:51,633 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:51,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:51,633 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:51,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:51,998 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:56,292 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7138#(and (exists ((|v_ULTIMATE.start_cstrcpy_~from#1.base_409| Int) (|v_ULTIMATE.start_cstrcpy_~from#1.offset_408| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |v_ULTIMATE.start_cstrcpy_~from#1.base_409|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (<= (select |#length| |v_ULTIMATE.start_cstrcpy_~from#1.base_409|) |v_ULTIMATE.start_cstrcpy_~from#1.offset_408|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (<= 0 |v_ULTIMATE.start_cstrcpy_~from#1.offset_408|))) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0))' at error location [2024-11-09 05:02:56,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:02:56,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:56,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2024-11-09 05:02:56,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958851289] [2024-11-09 05:02:56,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:02:56,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 05:02:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 05:02:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=16208, Unknown=0, NotChecked=0, Total=16512 [2024-11-09 05:02:56,296 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 44 states, 43 states have (on average 2.813953488372093) internal successors, (121), 44 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:03:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:03,648 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2024-11-09 05:03:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 05:03:03,649 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.813953488372093) internal successors, (121), 44 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-09 05:03:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:03,650 INFO L225 Difference]: With dead ends: 127 [2024-11-09 05:03:03,650 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 05:03:03,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=308, Invalid=16462, Unknown=0, NotChecked=0, Total=16770 [2024-11-09 05:03:03,652 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 5208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:03,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 5208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5207 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 05:03:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 05:03:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-09 05:03:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0080645161290323) internal successors, (125), 124 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:03:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2024-11-09 05:03:03,657 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 121 [2024-11-09 05:03:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:03,657 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2024-11-09 05:03:03,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.813953488372093) internal successors, (121), 44 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:03:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2024-11-09 05:03:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 05:03:03,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:03,659 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1] [2024-11-09 05:03:03,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 05:03:03,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:03,859 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-09 05:03:03,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1778904278, now seen corresponding path program 14 times [2024-11-09 05:03:03,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:03,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881310584] [2024-11-09 05:03:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:03,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:03:13,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:13,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881310584] [2024-11-09 05:03:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881310584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:13,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658767089] [2024-11-09 05:03:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:03:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:13,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:13,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde478ff-7c36-40a3-8c9e-440b27ee4bc1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 05:03:35,128 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2024-11-09 05:03:35,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:03:35,151 WARN L253 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 527 conjuncts are in the unsatisfiable core [2024-11-09 05:03:35,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:35,173 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 10 treesize of output 8 [2024-11-09 05:03:35,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 05:03:35,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-09 05:03:36,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 24 [2024-11-09 05:03:37,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 30 [2024-11-09 05:03:37,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 36 [2024-11-09 05:03:38,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 57 treesize of output 42 [2024-11-09 05:03:38,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 48 [2024-11-09 05:03:39,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 54 [2024-11-09 05:03:40,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 81 treesize of output 60 [2024-11-09 05:03:41,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 66 [2024-11-09 05:03:42,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 97 treesize of output 72 [2024-11-09 05:03:43,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105 treesize of output 78 [2024-11-09 05:03:44,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 113 treesize of output 84 [2024-11-09 05:03:45,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 121 treesize of output 90 [2024-11-09 05:03:46,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 129 treesize of output 96 [2024-11-09 05:03:47,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 137 treesize of output 102 [2024-11-09 05:03:49,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 145 treesize of output 108 [2024-11-09 05:03:50,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 153 treesize of output 114 [2024-11-09 05:03:51,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 161 treesize of output 120 [2024-11-09 05:03:53,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 169 treesize of output 126 [2024-11-09 05:03:54,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 132 [2024-11-09 05:03:56,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 185 treesize of output 138 [2024-11-09 05:03:57,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 193 treesize of output 144