./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/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_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/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_6bde5693-986e-447e-809b-9bd7a944bf89/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 003ead3201cb38ecc17dca4c0dd7fb7b12eace11010ba9f6077aefef97bddb9b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:13:15,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:13:15,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-09 07:13:15,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:13:15,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:13:15,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:13:15,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:13:15,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:13:15,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:13:15,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:13:15,872 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:13:15,873 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:13:15,873 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:13:15,874 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:13:15,874 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:13:15,874 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:13:15,875 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:13:15,875 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:13:15,875 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:13:15,875 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:13:15,876 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:13:15,880 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:13:15,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:13:15,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:13:15,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:13:15,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:13:15,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:13:15,882 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:13:15,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:13:15,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:13:15,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:13:15,883 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:13:15,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:13:15,883 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:13:15,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:13:15,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:13:15,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:13:15,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:13:15,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:15,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:13:15,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:13:15,888 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:13:15,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:13:15,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:13:15,889 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:13:15,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:13:15,889 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_6bde5693-986e-447e-809b-9bd7a944bf89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 003ead3201cb38ecc17dca4c0dd7fb7b12eace11010ba9f6077aefef97bddb9b [2024-11-09 07:13:16,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:13:16,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:13:16,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:13:16,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:13:16,233 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:13:16,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i Unable to find full path for "g++" [2024-11-09 07:13:18,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:13:18,591 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:13:18,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/sv-benchmarks/c/memsafety-broom/sll-middle-shared.i [2024-11-09 07:13:18,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/data/d1d03e0d2/85f3f15cf78d48c3a6ad2f1ab7e44d7a/FLAGf7a1802be [2024-11-09 07:13:18,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/data/d1d03e0d2/85f3f15cf78d48c3a6ad2f1ab7e44d7a [2024-11-09 07:13:18,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:13:18,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:13:18,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:18,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:13:18,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:13:18,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:18" (1/1) ... [2024-11-09 07:13:18,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55146c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:18, skipping insertion in model container [2024-11-09 07:13:18,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:18" (1/1) ... [2024-11-09 07:13:18,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:13:19,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:19,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:13:19,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:19,265 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:13:19,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19 WrapperNode [2024-11-09 07:13:19,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:19,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:19,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:13:19,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:13:19,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,310 INFO L138 Inliner]: procedures = 121, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2024-11-09 07:13:19,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:19,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:13:19,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:13:19,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:13:19,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:13:19,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:13:19,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:13:19,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:13:19,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (1/1) ... [2024-11-09 07:13:19,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:19,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:13:19,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:13:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:13:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-09 07:13:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-09 07:13:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:13:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:13:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:13:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:13:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:13:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:13:19,636 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:13:19,638 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:13:20,169 INFO L? ?]: Removed 111 outVars from TransFormulas that were not future-live. [2024-11-09 07:13:20,169 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:13:20,257 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:13:20,258 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:13:20,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:20 BoogieIcfgContainer [2024-11-09 07:13:20,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:13:20,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:13:20,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:13:20,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:13:20,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:13:18" (1/3) ... [2024-11-09 07:13:20,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc60cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:20, skipping insertion in model container [2024-11-09 07:13:20,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:19" (2/3) ... [2024-11-09 07:13:20,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc60cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:20, skipping insertion in model container [2024-11-09 07:13:20,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:20" (3/3) ... [2024-11-09 07:13:20,272 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-middle-shared.i [2024-11-09 07:13:20,289 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:13:20,289 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-09 07:13:20,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:13:20,437 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;@58195bbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:13:20,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-09 07:13:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 40 states have (on average 2.275) internal successors, (91), 84 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:13:20,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:20,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:13:20,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:20,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 5555543, now seen corresponding path program 1 times [2024-11-09 07:13:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709181554] [2024-11-09 07:13:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:20,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709181554] [2024-11-09 07:13:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709181554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:20,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:20,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:20,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964736724] [2024-11-09 07:13:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:20,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:20,769 INFO L87 Difference]: Start difference. First operand has 88 states, 40 states have (on average 2.275) internal successors, (91), 84 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:13:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:20,919 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2024-11-09 07:13:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:20,923 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 07:13:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:20,931 INFO L225 Difference]: With dead ends: 87 [2024-11-09 07:13:20,932 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:13:20,933 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 07:13:20,937 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:20,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:13:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 07:13:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 40 states have (on average 2.2) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2024-11-09 07:13:20,983 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 4 [2024-11-09 07:13:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:20,984 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2024-11-09 07:13:20,984 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:13:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2024-11-09 07:13:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:13:20,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:20,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:13:20,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:13:20,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:20,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 5555544, now seen corresponding path program 1 times [2024-11-09 07:13:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231044791] [2024-11-09 07:13:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:21,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231044791] [2024-11-09 07:13:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231044791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629062009] [2024-11-09 07:13:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:21,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:21,112 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:13:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:21,229 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2024-11-09 07:13:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:21,230 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 07:13:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:21,231 INFO L225 Difference]: With dead ends: 85 [2024-11-09 07:13:21,232 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 07:13:21,232 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 07:13:21,234 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:21,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 07:13:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-09 07:13:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 40 states have (on average 2.175) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2024-11-09 07:13:21,248 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 4 [2024-11-09 07:13:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:21,249 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2024-11-09 07:13:21,249 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:13:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2024-11-09 07:13:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:13:21,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:21,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:21,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:13:21,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:21,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1994177847, now seen corresponding path program 1 times [2024-11-09 07:13:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90275798] [2024-11-09 07:13:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:21,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:21,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90275798] [2024-11-09 07:13:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90275798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029049272] [2024-11-09 07:13:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:21,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:21,395 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:21,505 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-09 07:13:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:21,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-11-09 07:13:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:21,508 INFO L225 Difference]: With dead ends: 88 [2024-11-09 07:13:21,508 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 07:13:21,509 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 07:13:21,510 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:21,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 113 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 07:13:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2024-11-09 07:13:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 40 states have (on average 2.15) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2024-11-09 07:13:21,519 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 7 [2024-11-09 07:13:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:21,520 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2024-11-09 07:13:21,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2024-11-09 07:13:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:13:21,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:21,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:21,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:13:21,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1994177846, now seen corresponding path program 1 times [2024-11-09 07:13:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285720072] [2024-11-09 07:13:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:21,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285720072] [2024-11-09 07:13:21,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285720072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:21,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:21,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:21,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374830606] [2024-11-09 07:13:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:21,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:21,685 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:21,770 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-09 07:13:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:21,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-11-09 07:13:21,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:21,772 INFO L225 Difference]: With dead ends: 87 [2024-11-09 07:13:21,772 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 07:13:21,772 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 07:13:21,774 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:21,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 07:13:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-11-09 07:13:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 40 states have (on average 2.125) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2024-11-09 07:13:21,781 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 7 [2024-11-09 07:13:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:21,782 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2024-11-09 07:13:21,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2024-11-09 07:13:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:13:21,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:21,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:21,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:13:21,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:21,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1689966664, now seen corresponding path program 1 times [2024-11-09 07:13:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057496299] [2024-11-09 07:13:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:21,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057496299] [2024-11-09 07:13:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057496299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:21,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899426167] [2024-11-09 07:13:21,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:21,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:21,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:21,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:21,850 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:21,988 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2024-11-09 07:13:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-09 07:13:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:21,993 INFO L225 Difference]: With dead ends: 86 [2024-11-09 07:13:21,993 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:13:21,994 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 07:13:21,995 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:21,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:13:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2024-11-09 07:13:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 40 states have (on average 2.1) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-09 07:13:22,022 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 8 [2024-11-09 07:13:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:22,023 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-09 07:13:22,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-09 07:13:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:13:22,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:22,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:22,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:13:22,024 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:22,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1689966663, now seen corresponding path program 1 times [2024-11-09 07:13:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72281595] [2024-11-09 07:13:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:22,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72281595] [2024-11-09 07:13:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72281595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:22,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:22,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:13:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832778637] [2024-11-09 07:13:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:22,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:22,171 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:22,258 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-09 07:13:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-09 07:13:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:22,260 INFO L225 Difference]: With dead ends: 85 [2024-11-09 07:13:22,260 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 07:13:22,261 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 07:13:22,262 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:22,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 07:13:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-09 07:13:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 40 states have (on average 2.075) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2024-11-09 07:13:22,270 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 8 [2024-11-09 07:13:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:22,270 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2024-11-09 07:13:22,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2024-11-09 07:13:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:13:22,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:22,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:22,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:13:22,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:22,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash -849355013, now seen corresponding path program 1 times [2024-11-09 07:13:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:22,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513317719] [2024-11-09 07:13:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:22,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513317719] [2024-11-09 07:13:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513317719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:22,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:13:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762241547] [2024-11-09 07:13:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:22,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:22,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:22,548 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:22,752 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-11-09 07:13:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:13:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-09 07:13:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:22,753 INFO L225 Difference]: With dead ends: 80 [2024-11-09 07:13:22,754 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 07:13:22,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:22,755 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 26 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:22,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 203 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 07:13:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-11-09 07:13:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 40 states have (on average 1.95) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-09 07:13:22,766 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 9 [2024-11-09 07:13:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:22,767 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-09 07:13:22,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-09 07:13:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:13:22,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:22,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:22,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:13:22,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:22,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash -849355012, now seen corresponding path program 1 times [2024-11-09 07:13:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523883402] [2024-11-09 07:13:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:23,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523883402] [2024-11-09 07:13:23,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523883402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:13:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137580446] [2024-11-09 07:13:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:23,204 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:23,438 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-09 07:13:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:13:23,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-09 07:13:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:23,439 INFO L225 Difference]: With dead ends: 78 [2024-11-09 07:13:23,439 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 07:13:23,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:23,441 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 11 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:23,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 07:13:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2024-11-09 07:13:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 40 states have (on average 1.9) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-09 07:13:23,452 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 9 [2024-11-09 07:13:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:23,453 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-09 07:13:23,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-09 07:13:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:13:23,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:23,454 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:23,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:13:23,454 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:23,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 403941298, now seen corresponding path program 1 times [2024-11-09 07:13:23,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:23,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19621303] [2024-11-09 07:13:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:23,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:23,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19621303] [2024-11-09 07:13:23,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19621303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:23,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:13:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990600802] [2024-11-09 07:13:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:23,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:13:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:13:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:13:23,709 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:23,965 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-11-09 07:13:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:13:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-09 07:13:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:23,967 INFO L225 Difference]: With dead ends: 79 [2024-11-09 07:13:23,967 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 07:13:23,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:23,972 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:23,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 196 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 07:13:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-09 07:13:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-09 07:13:23,981 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2024-11-09 07:13:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:23,981 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-09 07:13:23,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-09 07:13:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:13:23,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:23,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:23,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:13:23,982 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:23,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 403941299, now seen corresponding path program 1 times [2024-11-09 07:13:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:23,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702490502] [2024-11-09 07:13:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:24,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702490502] [2024-11-09 07:13:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702490502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715923902] [2024-11-09 07:13:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:24,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:24,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:24,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:13:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:24,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:13:24,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:24,757 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-09 07:13:24,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:13:24,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:13:24,830 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:13:24,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:13:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:24,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:24,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715923902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:24,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:24,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2024-11-09 07:13:24,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071000366] [2024-11-09 07:13:24,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:24,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:24,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=170, Unknown=1, NotChecked=26, Total=240 [2024-11-09 07:13:24,863 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:25,094 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-09 07:13:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:13:25,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-09 07:13:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:25,095 INFO L225 Difference]: With dead ends: 88 [2024-11-09 07:13:25,096 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 07:13:25,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=170, Unknown=1, NotChecked=26, Total=240 [2024-11-09 07:13:25,097 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 9 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:25,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 196 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 109 Unchecked, 0.2s Time] [2024-11-09 07:13:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 07:13:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-09 07:13:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 78 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2024-11-09 07:13:25,102 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 17 [2024-11-09 07:13:25,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:25,103 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2024-11-09 07:13:25,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2024-11-09 07:13:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:13:25,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:25,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:25,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:13:25,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:13:25,308 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:25,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1374020369, now seen corresponding path program 1 times [2024-11-09 07:13:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973849885] [2024-11-09 07:13:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:25,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973849885] [2024-11-09 07:13:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973849885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:25,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:13:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252599186] [2024-11-09 07:13:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:25,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:13:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:13:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:13:25,472 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:25,645 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2024-11-09 07:13:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:13:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 07:13:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:25,647 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:13:25,647 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 07:13:25,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:13:25,648 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:25,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 197 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 07:13:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2024-11-09 07:13:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.7962962962962963) internal successors, (97), 82 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-11-09 07:13:25,653 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 16 [2024-11-09 07:13:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-11-09 07:13:25,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-11-09 07:13:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:13:25,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:25,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:25,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:13:25,655 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:25,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1374020368, now seen corresponding path program 1 times [2024-11-09 07:13:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964400278] [2024-11-09 07:13:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:25,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:25,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964400278] [2024-11-09 07:13:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964400278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:13:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599882563] [2024-11-09 07:13:25,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:25,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:13:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:13:25,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:25,872 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:26,076 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2024-11-09 07:13:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:13:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 07:13:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:26,077 INFO L225 Difference]: With dead ends: 97 [2024-11-09 07:13:26,077 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 07:13:26,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:13:26,078 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 16 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:26,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 350 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 07:13:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2024-11-09 07:13:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.75) internal successors, (105), 88 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-11-09 07:13:26,082 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 16 [2024-11-09 07:13:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:26,082 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-11-09 07:13:26,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-11-09 07:13:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:13:26,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:26,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:26,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:13:26,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:26,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 355654329, now seen corresponding path program 1 times [2024-11-09 07:13:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347405584] [2024-11-09 07:13:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:26,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347405584] [2024-11-09 07:13:26,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347405584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:26,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:13:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480691720] [2024-11-09 07:13:26,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:26,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:26,182 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:26,290 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2024-11-09 07:13:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:13:26,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 07:13:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:26,291 INFO L225 Difference]: With dead ends: 98 [2024-11-09 07:13:26,291 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 07:13:26,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:26,292 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 20 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:26,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 346 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:13:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 07:13:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2024-11-09 07:13:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 90 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2024-11-09 07:13:26,296 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 17 [2024-11-09 07:13:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:26,297 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2024-11-09 07:13:26,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:13:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2024-11-09 07:13:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:13:26,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:26,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:26,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 07:13:26,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:26,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1640640583, now seen corresponding path program 1 times [2024-11-09 07:13:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891030727] [2024-11-09 07:13:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:13:26,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891030727] [2024-11-09 07:13:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891030727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:26,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:13:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833598345] [2024-11-09 07:13:26,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:26,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:13:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:13:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:13:26,463 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:13:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:26,642 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2024-11-09 07:13:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:13:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-09 07:13:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:26,643 INFO L225 Difference]: With dead ends: 94 [2024-11-09 07:13:26,643 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 07:13:26,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:26,644 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:26,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 213 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 07:13:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-09 07:13:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 89 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2024-11-09 07:13:26,648 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 19 [2024-11-09 07:13:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:26,648 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2024-11-09 07:13:26,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:13:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2024-11-09 07:13:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:13:26,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:26,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:26,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 07:13:26,650 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:26,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1640640584, now seen corresponding path program 1 times [2024-11-09 07:13:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:26,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119816351] [2024-11-09 07:13:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:13:26,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119816351] [2024-11-09 07:13:26,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119816351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:26,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:26,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:13:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120150107] [2024-11-09 07:13:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:26,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:26,951 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:13:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:27,132 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-11-09 07:13:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:13:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-09 07:13:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:27,134 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:13:27,134 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 07:13:27,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:13:27,135 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:27,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 269 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:13:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 07:13:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-09 07:13:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.596774193548387) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2024-11-09 07:13:27,138 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2024-11-09 07:13:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:27,139 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2024-11-09 07:13:27,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:13:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2024-11-09 07:13:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:13:27,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:27,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:27,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 07:13:27,140 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:27,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash 402708856, now seen corresponding path program 1 times [2024-11-09 07:13:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169649475] [2024-11-09 07:13:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:27,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:27,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169649475] [2024-11-09 07:13:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169649475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:27,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:13:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286840595] [2024-11-09 07:13:27,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:27,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:13:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:13:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:13:27,501 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:27,894 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2024-11-09 07:13:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:13:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 07:13:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:27,896 INFO L225 Difference]: With dead ends: 94 [2024-11-09 07:13:27,896 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 07:13:27,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:13:27,897 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 15 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:27,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 381 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:13:27,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 07:13:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-09 07:13:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.5806451612903225) internal successors, (98), 88 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2024-11-09 07:13:27,901 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 21 [2024-11-09 07:13:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:27,902 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2024-11-09 07:13:27,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2024-11-09 07:13:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:13:27,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:27,902 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:27,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 07:13:27,903 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:27,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 402708857, now seen corresponding path program 1 times [2024-11-09 07:13:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969323738] [2024-11-09 07:13:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:28,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:28,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969323738] [2024-11-09 07:13:28,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969323738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:28,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:28,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:13:28,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341570617] [2024-11-09 07:13:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:28,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:13:28,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:13:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:13:28,442 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:28,915 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-09 07:13:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:13:28,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 07:13:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:28,916 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:13:28,916 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 07:13:28,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:13:28,917 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:28,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 405 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:13:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 07:13:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-09 07:13:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.564516129032258) internal successors, (97), 88 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2024-11-09 07:13:28,922 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 21 [2024-11-09 07:13:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:28,924 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2024-11-09 07:13:28,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2024-11-09 07:13:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:13:28,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:28,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:28,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 07:13:28,927 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:13:28,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2024586867, now seen corresponding path program 1 times [2024-11-09 07:13:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114375414] [2024-11-09 07:13:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:28,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:29,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:29,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114375414] [2024-11-09 07:13:29,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114375414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:29,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093211128] [2024-11-09 07:13:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:29,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:29,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:29,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:29,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:13:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:29,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 07:13:29,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:29,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 07:13:29,973 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 13 treesize of output 9 [2024-11-09 07:13:29,980 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 13 treesize of output 9 [2024-11-09 07:13:30,097 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 07:13:30,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-09 07:13:30,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:13:30,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:13:30,217 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-09 07:13:30,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-09 07:13:30,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:13:30,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:13:30,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 07:13:30,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 07:13:30,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 07:13:30,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 07:13:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:30,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:13:30,916 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((|ULTIMATE.start_create_~data2~0#1.offset| Int) (v_ArrVal_645 Int) (v_ArrVal_642 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~data2~0#1.base| v_ArrVal_642))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_645) .cse1 |ULTIMATE.start_create_~data2~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_641 (Array Int Int)) (v_ArrVal_646 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~data2~0#1.base| v_ArrVal_641))) (store .cse3 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_646) .cse1 |c_ULTIMATE.start_create_~data2~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0)))) is different from false [2024-11-09 07:13:31,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:13:31,525 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-09 07:13:31,533 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 140 treesize of output 122 [2024-11-09 07:13:31,543 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 28 treesize of output 20 [2024-11-09 07:13:31,549 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 17 treesize of output 13 [2024-11-09 07:13:31,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:13:31,608 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-09 07:13:31,614 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 140 treesize of output 122 [2024-11-09 07:13:31,623 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 28 treesize of output 20 [2024-11-09 07:13:31,629 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 17 treesize of output 13 [2024-11-09 07:13:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093211128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:13:31,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1259716667] [2024-11-09 07:13:31,775 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 07:13:31,775 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:13:31,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:13:31,785 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:13:31,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:13:32,625 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-09 07:13:32,649 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:26,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1259716667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:26,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:14:26,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12, 10, 12] total 44 [2024-11-09 07:14:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338115359] [2024-11-09 07:14:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:26,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:14:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:14:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1586, Unknown=24, NotChecked=82, Total=1892 [2024-11-09 07:14:26,898 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:14:29,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:31,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:33,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:35,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:38,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:41,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:45,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:47,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:49,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:51,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:53,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:56,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:14:58,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:00,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:02,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:04,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:07,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:09,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:11,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:15:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:14,234 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2024-11-09 07:15:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 07:15:14,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-09 07:15:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:14,236 INFO L225 Difference]: With dead ends: 101 [2024-11-09 07:15:14,236 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 07:15:14,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=200, Invalid=1586, Unknown=24, NotChecked=82, Total=1892 [2024-11-09 07:15:14,238 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 4 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:14,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 300 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 907 Invalid, 23 Unknown, 0 Unchecked, 46.6s Time] [2024-11-09 07:15:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 07:15:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-09 07:15:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 91 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-09 07:15:14,241 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 21 [2024-11-09 07:15:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:14,242 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-09 07:15:14,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-09 07:15:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:15:14,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:14,243 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:14,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 07:15:14,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 07:15:14,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:14,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1661703755, now seen corresponding path program 1 times [2024-11-09 07:15:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916557034] [2024-11-09 07:15:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:14,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916557034] [2024-11-09 07:15:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916557034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:14,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:14,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:15:14,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322395032] [2024-11-09 07:15:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:14,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:15:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:15:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:15:14,586 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:14,933 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2024-11-09 07:15:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:15:14,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-09 07:15:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:14,935 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:15:14,935 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 07:15:14,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:15:14,936 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:14,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 175 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:15:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 07:15:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2024-11-09 07:15:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.605263157894737) internal successors, (122), 101 states have internal predecessors, (122), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2024-11-09 07:15:14,940 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 22 [2024-11-09 07:15:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:14,941 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2024-11-09 07:15:14,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2024-11-09 07:15:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:15:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:14,942 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:14,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 07:15:14,942 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:14,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1661703754, now seen corresponding path program 1 times [2024-11-09 07:15:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:14,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334605929] [2024-11-09 07:15:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:15,235 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 07:15:15,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:15,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334605929] [2024-11-09 07:15:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334605929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:15,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037725051] [2024-11-09 07:15:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:15,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:15,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:15,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:15:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:15,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:15:15,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:15,716 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 07:15:15,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:16,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:15:16,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-09 07:15:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:15:16,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037725051] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:16,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:15:16,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 19 [2024-11-09 07:15:16,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374764991] [2024-11-09 07:15:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:16,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:15:16,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:16,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:15:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:15:16,141 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:16,577 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2024-11-09 07:15:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:15:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-09 07:15:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:16,579 INFO L225 Difference]: With dead ends: 119 [2024-11-09 07:15:16,579 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 07:15:16,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:15:16,580 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 30 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:16,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 185 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 07:15:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 110. [2024-11-09 07:15:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 79 states have (on average 1.5949367088607596) internal successors, (126), 104 states have internal predecessors, (126), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2024-11-09 07:15:16,585 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 22 [2024-11-09 07:15:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:16,586 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2024-11-09 07:15:16,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2024-11-09 07:15:16,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 07:15:16,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:16,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:16,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:15:16,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:16,790 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:16,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 26791211, now seen corresponding path program 1 times [2024-11-09 07:15:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813736380] [2024-11-09 07:15:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:17,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813736380] [2024-11-09 07:15:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813736380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:17,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:15:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120500261] [2024-11-09 07:15:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:17,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:15:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:15:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:15:17,051 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:17,544 INFO L93 Difference]: Finished difference Result 129 states and 161 transitions. [2024-11-09 07:15:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:15:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 07:15:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:17,545 INFO L225 Difference]: With dead ends: 129 [2024-11-09 07:15:17,545 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 07:15:17,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:15:17,546 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:17,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 273 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 07:15:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 111. [2024-11-09 07:15:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 80 states have (on average 1.5875) internal successors, (127), 105 states have internal predecessors, (127), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2024-11-09 07:15:17,550 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 23 [2024-11-09 07:15:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:17,551 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2024-11-09 07:15:17,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2024-11-09 07:15:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:15:17,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:17,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:17,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 07:15:17,552 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:17,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 830527669, now seen corresponding path program 1 times [2024-11-09 07:15:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53662434] [2024-11-09 07:15:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:17,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:17,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53662434] [2024-11-09 07:15:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53662434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:15:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212266154] [2024-11-09 07:15:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:17,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:15:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:15:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:15:17,835 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:18,279 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2024-11-09 07:15:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:15:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-09 07:15:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:18,281 INFO L225 Difference]: With dead ends: 128 [2024-11-09 07:15:18,281 INFO L226 Difference]: Without dead ends: 128 [2024-11-09 07:15:18,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:15:18,283 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:18,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 216 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-09 07:15:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2024-11-09 07:15:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 81 states have (on average 1.5802469135802468) internal successors, (128), 106 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2024-11-09 07:15:18,290 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 24 [2024-11-09 07:15:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:18,291 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2024-11-09 07:15:18,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2024-11-09 07:15:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:15:18,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:18,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:18,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 07:15:18,294 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:18,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash 831146362, now seen corresponding path program 1 times [2024-11-09 07:15:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:18,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922031126] [2024-11-09 07:15:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:18,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:18,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922031126] [2024-11-09 07:15:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922031126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:18,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:15:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782708537] [2024-11-09 07:15:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:18,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:15:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:15:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:15:18,447 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:18,739 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2024-11-09 07:15:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:15:18,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-09 07:15:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:18,741 INFO L225 Difference]: With dead ends: 116 [2024-11-09 07:15:18,741 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 07:15:18,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:15:18,741 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 40 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:18,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 281 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:15:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 07:15:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2024-11-09 07:15:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 80 states have (on average 1.5125) internal successors, (121), 105 states have internal predecessors, (121), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:18,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2024-11-09 07:15:18,746 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 24 [2024-11-09 07:15:18,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:18,746 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2024-11-09 07:15:18,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2024-11-09 07:15:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:15:18,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:18,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:18,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 07:15:18,749 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:18,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -23445907, now seen corresponding path program 1 times [2024-11-09 07:15:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:18,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929350801] [2024-11-09 07:15:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:18,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:19,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:19,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929350801] [2024-11-09 07:15:19,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929350801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:19,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:19,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 07:15:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659789481] [2024-11-09 07:15:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:19,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:15:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:15:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:15:19,168 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:19,611 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2024-11-09 07:15:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:15:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-09 07:15:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:19,613 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:15:19,613 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 07:15:19,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:15:19,613 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:19,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 264 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:15:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 07:15:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-09 07:15:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 106 states have internal predecessors, (122), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2024-11-09 07:15:19,617 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 25 [2024-11-09 07:15:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:19,617 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2024-11-09 07:15:19,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2024-11-09 07:15:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:15:19,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:19,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:19,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 07:15:19,618 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:19,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -726822984, now seen corresponding path program 1 times [2024-11-09 07:15:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548548498] [2024-11-09 07:15:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:20,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:20,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548548498] [2024-11-09 07:15:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548548498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:20,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:15:20,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795070586] [2024-11-09 07:15:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:20,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:15:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:15:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:15:20,133 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:20,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:20,851 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2024-11-09 07:15:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:15:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-09 07:15:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:20,852 INFO L225 Difference]: With dead ends: 119 [2024-11-09 07:15:20,852 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 07:15:20,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:15:20,853 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 41 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:20,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 269 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:15:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 07:15:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2024-11-09 07:15:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 107 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2024-11-09 07:15:20,858 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 26 [2024-11-09 07:15:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:20,858 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2024-11-09 07:15:20,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2024-11-09 07:15:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:15:20,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:20,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:20,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 07:15:20,860 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:20,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash -726822983, now seen corresponding path program 1 times [2024-11-09 07:15:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300816731] [2024-11-09 07:15:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:21,216 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 07:15:21,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:21,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300816731] [2024-11-09 07:15:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300816731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:21,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805346758] [2024-11-09 07:15:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:21,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:21,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:21,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:21,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:15:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:21,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:15:21,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:15:21,704 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:15:21,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805346758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:21,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:15:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-09 07:15:21,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648455270] [2024-11-09 07:15:21,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:21,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:15:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:15:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:15:21,706 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:22,073 INFO L93 Difference]: Finished difference Result 125 states and 146 transitions. [2024-11-09 07:15:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:15:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-09 07:15:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:22,075 INFO L225 Difference]: With dead ends: 125 [2024-11-09 07:15:22,075 INFO L226 Difference]: Without dead ends: 125 [2024-11-09 07:15:22,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:15:22,076 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:22,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 183 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:15:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-09 07:15:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-11-09 07:15:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.5113636363636365) internal successors, (133), 113 states have internal predecessors, (133), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:15:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-09 07:15:22,085 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 26 [2024-11-09 07:15:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:22,086 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-09 07:15:22,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:15:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-09 07:15:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:15:22,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:22,087 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:22,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:15:22,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 07:15:22,288 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:15:22,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1806367183, now seen corresponding path program 1 times [2024-11-09 07:15:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557120639] [2024-11-09 07:15:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:15:23,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557120639] [2024-11-09 07:15:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557120639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996916715] [2024-11-09 07:15:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:23,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:23,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:15:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:23,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:15:23,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:23,469 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:15:23,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:15:23,518 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 19 treesize of output 1 [2024-11-09 07:15:23,644 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:15:23,644 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 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 07:15:23,747 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:15:23,747 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 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 07:15:23,763 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 31 treesize of output 13 [2024-11-09 07:15:23,796 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-09 07:15:23,848 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 07:15:23,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 07:15:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-09 07:15:23,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996916715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:23,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263253062] [2024-11-09 07:15:23,953 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 07:15:23,953 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:23,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:23,953 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:23,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:30,869 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:15:30,895 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:30,857 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5872#(exists ((|v_ULTIMATE.start_create_~now~0#1.base_41| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_41|) 1)))' at error location [2024-11-09 07:16:30,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:30,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:30,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-11-09 07:16:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415155577] [2024-11-09 07:16:30,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:30,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 07:16:30,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 07:16:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1114, Unknown=21, NotChecked=68, Total=1332 [2024-11-09 07:16:30,859 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 19 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:16:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:35,740 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2024-11-09 07:16:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:16:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2024-11-09 07:16:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:35,741 INFO L225 Difference]: With dead ends: 117 [2024-11-09 07:16:35,741 INFO L226 Difference]: Without dead ends: 117 [2024-11-09 07:16:35,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 64.9s TimeCoverageRelationStatistics Valid=174, Invalid=1529, Unknown=23, NotChecked=80, Total=1806 [2024-11-09 07:16:35,742 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 10 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:35,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 476 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 366 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2024-11-09 07:16:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-09 07:16:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-09 07:16:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.4886363636363635) internal successors, (131), 111 states have internal predecessors, (131), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:16:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2024-11-09 07:16:35,751 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 29 [2024-11-09 07:16:35,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:35,751 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2024-11-09 07:16:35,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:16:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2024-11-09 07:16:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:16:35,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:35,757 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:16:35,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 07:16:35,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:35,957 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:16:35,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1806367182, now seen corresponding path program 1 times [2024-11-09 07:16:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:35,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889869328] [2024-11-09 07:16:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:16:37,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889869328] [2024-11-09 07:16:37,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889869328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814011665] [2024-11-09 07:16:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:37,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:37,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:37,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:16:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:37,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 07:16:37,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:37,455 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 07:16:37,521 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:16:37,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:16:37,586 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 13 treesize of output 9 [2024-11-09 07:16:37,600 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 19 treesize of output 1 [2024-11-09 07:16:37,742 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:16:37,743 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 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-09 07:16:37,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 07:16:37,886 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:16:37,887 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 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-09 07:16:37,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 07:16:37,928 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 42 treesize of output 18 [2024-11-09 07:16:37,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-09 07:16:38,001 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-09 07:16:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:16:38,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 07:16:38,044 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:16:38,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:16:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 07:16:38,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:38,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814011665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069042655] [2024-11-09 07:16:38,319 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 07:16:38,319 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:38,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:38,320 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:38,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:44,846 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:16:44,861 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:21,447 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6135#true' at error location [2024-11-09 07:17:21,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:21,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:17:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2024-11-09 07:17:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220907910] [2024-11-09 07:17:21,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:21,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 07:17:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 07:17:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1393, Unknown=16, NotChecked=76, Total=1640 [2024-11-09 07:17:21,450 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:17:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:23,045 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2024-11-09 07:17:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:17:23,046 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 29 [2024-11-09 07:17:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:23,047 INFO L225 Difference]: With dead ends: 113 [2024-11-09 07:17:23,047 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 07:17:23,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=241, Invalid=2096, Unknown=19, NotChecked=94, Total=2450 [2024-11-09 07:17:23,048 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:23,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 514 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 535 Invalid, 0 Unknown, 78 Unchecked, 0.8s Time] [2024-11-09 07:17:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 07:17:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-09 07:17:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 107 states have internal predecessors, (127), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:17:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2024-11-09 07:17:23,053 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 29 [2024-11-09 07:17:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:23,053 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2024-11-09 07:17:23,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:17:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2024-11-09 07:17:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:17:23,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:17:23,054 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:17:23,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:17:23,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 07:17:23,255 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:17:23,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:17:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1325626001, now seen corresponding path program 1 times [2024-11-09 07:17:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:17:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929518700] [2024-11-09 07:17:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:17:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:17:23,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929518700] [2024-11-09 07:17:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929518700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709962734] [2024-11-09 07:17:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:23,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:23,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:17:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:23,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:17:23,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:17:24,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:17:24,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:17:24,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2024-11-09 07:17:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:17:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709962734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:17:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102732252] [2024-11-09 07:17:24,739 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-09 07:17:24,740 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:17:24,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:17:24,740 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:17:24,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:17:30,992 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:17:31,008 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:18:14,440 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6690#(and (or (< (select |#length| |ULTIMATE.start_main_~l~0#1.base|) (+ |ULTIMATE.start_main_~l~0#1.offset| 8)) (< |ULTIMATE.start_main_~l~0#1.offset| 0)) (exists ((|v_#memory_$Pointer$.base_163| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_160| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_161| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~data1~0#1.base_24| Int) (|v_#memory_int_133| (Array Int (Array Int Int))) (|v_#memory_int_134| (Array Int (Array Int Int))) (|v_#memory_int_135| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~data1~0#1.offset_23| Int) (|v_ULTIMATE.start_create_~now~0#1.offset_43| Int) (|v_#memory_$Pointer$.base_164| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~now~0#1.base_50| Int)) (and (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (= (store (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |#memory_$Pointer$.base| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))))) |#memory_$Pointer$.base|) (= (store |v_#memory_int_134| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_int_134| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (select (select |v_#memory_int_135| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))))) |v_#memory_int_135|) (= (store |v_#memory_$Pointer$.base_163| |v_ULTIMATE.start_create_~now~0#1.base_50| (store (select |v_#memory_$Pointer$.base_163| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))) |v_#memory_$Pointer$.base_164|) (= |#memory_int| (store |v_#memory_int_135| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_int_135| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |#memory_int| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))))))) (= (store |v_#memory_$Pointer$.offset_160| |v_ULTIMATE.start_create_~now~0#1.base_50| (store (select |v_#memory_$Pointer$.offset_160| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))) |v_#memory_$Pointer$.offset_161|) (= (store |v_#memory_int_133| |v_ULTIMATE.start_create_~now~0#1.base_50| (store (select |v_#memory_int_133| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select (select |v_#memory_int_134| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))) |v_#memory_int_134|) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |#memory_$Pointer$.offset| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))))))) (<= (+ (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) 24) (select |#length| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))) (<= 0 (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_50|)) (= (select |#valid| (select (select (store |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.base_164| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.base_24|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) 1) (<= 0 (+ 16 (select (select (store |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (store (select |v_#memory_$Pointer$.offset_161| (select (select |v_#memory_$Pointer$.base_164| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (select (select |v_#memory_$Pointer$.offset_161| |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~data1~0#1.offset_23|)) |v_ULTIMATE.start_create_~now~0#1.base_50|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)))) (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_50|) 1))) (or (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_main_~l~0#1.offset| 0))))' at error location [2024-11-09 07:18:14,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:18:14,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:18:14,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-09 07:18:14,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178519374] [2024-11-09 07:18:14,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:18:14,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:18:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:18:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1188, Unknown=10, NotChecked=0, Total=1332 [2024-11-09 07:18:14,443 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 07:18:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:15,028 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-09 07:18:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:18:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 28 [2024-11-09 07:18:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:15,030 INFO L225 Difference]: With dead ends: 119 [2024-11-09 07:18:15,030 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 07:18:15,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=145, Invalid=1251, Unknown=10, NotChecked=0, Total=1406 [2024-11-09 07:18:15,031 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:15,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 446 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:18:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 07:18:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-11-09 07:18:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 106 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:18:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2024-11-09 07:18:15,036 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 28 [2024-11-09 07:18:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:15,036 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2024-11-09 07:18:15,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 07:18:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2024-11-09 07:18:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:18:15,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:15,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:15,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:18:15,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 07:18:15,242 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:18:15,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1056675951, now seen corresponding path program 1 times [2024-11-09 07:18:15,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620033672] [2024-11-09 07:18:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:18:15,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620033672] [2024-11-09 07:18:15,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620033672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:18:15,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:18:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:18:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474472219] [2024-11-09 07:18:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:18:15,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:18:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:18:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:18:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:18:15,707 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:18:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:16,266 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2024-11-09 07:18:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:18:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-09 07:18:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:16,267 INFO L225 Difference]: With dead ends: 115 [2024-11-09 07:18:16,267 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 07:18:16,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:18:16,268 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 28 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:16,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 340 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:18:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 07:18:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-11-09 07:18:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 89 states have (on average 1.3932584269662922) internal successors, (124), 107 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:18:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2024-11-09 07:18:16,271 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 27 [2024-11-09 07:18:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:16,272 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2024-11-09 07:18:16,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:18:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2024-11-09 07:18:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:18:16,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:16,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:16,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 07:18:16,273 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:18:16,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1855266914, now seen corresponding path program 1 times [2024-11-09 07:18:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:16,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528959456] [2024-11-09 07:18:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:16,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:18:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528959456] [2024-11-09 07:18:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528959456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268314332] [2024-11-09 07:18:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:16,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:18:16,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:18:16,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:18:16,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:18:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:18:17,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 07:18:17,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:18:17,549 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:18:17,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:18:17,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:18:17,630 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 19 treesize of output 1 [2024-11-09 07:18:17,688 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 10 treesize of output 4 [2024-11-09 07:18:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:18:17,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:18:18,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268314332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:18:18,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [299309397] [2024-11-09 07:18:18,160 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 07:18:18,160 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:18:18,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:18:18,160 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:18:18,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:18:24,856 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:18:24,874 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:19:36,921 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7338#(and (= |ULTIMATE.start_loop_#t~mem14#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~l~0#1.base|) |ULTIMATE.start_main_~l~0#1.offset|)) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_55| Int) (|v_#memory_$Pointer$.base_185| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_181| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~now~0#1.offset_48| Int) (|v_#memory_$Pointer$.offset_182| (Array Int (Array Int Int))) (|v_#memory_int_154| (Array Int (Array Int Int))) (|v_#memory_int_155| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~data1~0#1.base_26| Int) (|v_ULTIMATE.start_create_~data1~0#1.offset_25| Int) (|v_#memory_int_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_186| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.base_185| |v_ULTIMATE.start_create_~now~0#1.base_55| (store (select |v_#memory_$Pointer$.base_185| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|) (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)))) |v_#memory_$Pointer$.base_186|) (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (= |v_#memory_int_156| (store |v_#memory_int_155| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_int_155| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (select (select |v_#memory_int_156| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)))))) (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_55|) 1) (<= 0 (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16)) (= (store |v_#memory_$Pointer$.offset_181| |v_ULTIMATE.start_create_~now~0#1.base_55| (store (select |v_#memory_$Pointer$.offset_181| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)))) |v_#memory_$Pointer$.offset_182|) (<= 0 (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_48|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_55|)) (= |#memory_int| (store |v_#memory_int_156| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_int_156| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16) (select (select |#memory_int| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16))))) (= (select |#valid| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) 1) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16) (select (select |#memory_$Pointer$.offset| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16))))) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16) (select (select |#memory_$Pointer$.base| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 16))))) (= (store |v_#memory_int_154| |v_ULTIMATE.start_create_~now~0#1.base_55| (store (select |v_#memory_int_154| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|) (select (select |v_#memory_int_155| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)))) |v_#memory_int_155|) (<= (+ (select (select (store |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.offset_182| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.offset_25|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) 24) (select |#length| (select (select (store |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) (store (select |v_#memory_$Pointer$.base_186| (select (select |v_#memory_$Pointer$.base_186| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|))) (select (select |v_#memory_$Pointer$.offset_182| |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)) |v_ULTIMATE.start_create_~data1~0#1.base_26|)) |v_ULTIMATE.start_create_~now~0#1.base_55|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_48|)))))) (= |ULTIMATE.start_loop_#t~mem14#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~l~0#1.base|) |ULTIMATE.start_main_~l~0#1.offset|)) (= (select |#valid| |ULTIMATE.start_main_~l~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~l~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~l~0#1.base|)) (<= (select |#length| |ULTIMATE.start_main_~l~0#1.base|) (+ 23 |ULTIMATE.start_main_~l~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~l~0#1.offset|) (or (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_main_~l~0#1.offset| 0))))' at error location [2024-11-09 07:19:36,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:19:36,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:19:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-09 07:19:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800195917] [2024-11-09 07:19:36,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:19:36,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:19:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:36,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:19:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2025, Unknown=19, NotChecked=0, Total=2256 [2024-11-09 07:19:36,924 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 23 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:19:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:37,866 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2024-11-09 07:19:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:19:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2024-11-09 07:19:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:37,868 INFO L225 Difference]: With dead ends: 120 [2024-11-09 07:19:37,868 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 07:19:37,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=252, Invalid=2378, Unknown=22, NotChecked=0, Total=2652 [2024-11-09 07:19:37,869 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:37,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 535 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:19:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 07:19:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2024-11-09 07:19:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 108 states have internal predecessors, (125), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2024-11-09 07:19:37,874 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2024-11-09 07:19:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:37,874 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2024-11-09 07:19:37,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:19:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2024-11-09 07:19:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:19:37,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:37,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:37,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:19:38,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:38,079 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:19:38,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1602784024, now seen corresponding path program 1 times [2024-11-09 07:19:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523094061] [2024-11-09 07:19:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:38,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:19:38,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523094061] [2024-11-09 07:19:38,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523094061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:38,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:38,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:19:38,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024321670] [2024-11-09 07:19:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:38,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:19:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:19:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:19:38,549 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:19:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:39,272 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2024-11-09 07:19:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:19:39,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-09 07:19:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:39,273 INFO L225 Difference]: With dead ends: 115 [2024-11-09 07:19:39,273 INFO L226 Difference]: Without dead ends: 115 [2024-11-09 07:19:39,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:19:39,274 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:39,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 323 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:19:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-09 07:19:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2024-11-09 07:19:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 108 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2024-11-09 07:19:39,279 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 28 [2024-11-09 07:19:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:39,279 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2024-11-09 07:19:39,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:19:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2024-11-09 07:19:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:19:39,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:39,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:39,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 07:19:39,281 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:19:39,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1853302669, now seen corresponding path program 1 times [2024-11-09 07:19:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434932244] [2024-11-09 07:19:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:39,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:19:40,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434932244] [2024-11-09 07:19:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434932244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:19:40,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:19:40,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 07:19:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311999683] [2024-11-09 07:19:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:19:40,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 07:19:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:19:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 07:19:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:19:40,028 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:19:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:19:40,665 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2024-11-09 07:19:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:19:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-09 07:19:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:19:40,666 INFO L225 Difference]: With dead ends: 114 [2024-11-09 07:19:40,666 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:19:40,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-09 07:19:40,667 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 28 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:19:40,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 386 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:19:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:19:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-09 07:19:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 108 states have internal predecessors, (123), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:19:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-09 07:19:40,671 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 29 [2024-11-09 07:19:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:19:40,672 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-09 07:19:40,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:19:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-09 07:19:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:19:40,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:19:40,673 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:19:40,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 07:19:40,673 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:19:40,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:19:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1084170120, now seen corresponding path program 1 times [2024-11-09 07:19:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:19:40,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096668506] [2024-11-09 07:19:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:19:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:19:41,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:19:41,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096668506] [2024-11-09 07:19:41,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096668506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:19:41,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918119119] [2024-11-09 07:19:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:19:41,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:19:41,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:19:41,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:19:41,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:19:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:19:42,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 07:19:42,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:19:42,157 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:19:42,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:19:42,202 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 19 treesize of output 1 [2024-11-09 07:19:42,308 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:19:42,309 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 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-09 07:19:42,384 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:19:42,384 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 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 07:19:42,447 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 31 treesize of output 13 [2024-11-09 07:19:42,466 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 07:19:42,654 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:19:42,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:19:42,746 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 19 treesize of output 1 [2024-11-09 07:19:42,754 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 13 treesize of output 9 [2024-11-09 07:19:42,933 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:19:42,933 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 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 07:19:42,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 07:19:42,957 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 31 treesize of output 13 [2024-11-09 07:19:42,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-09 07:19:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:19:43,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:19:43,330 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1856 (Array Int Int)) (v_ArrVal_1855 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1855) |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1856) |c_ULTIMATE.start_create_~now~0#1.base|) .cse1)))) (forall ((v_ArrVal_1855 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1855) |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) 16)))))) is different from false [2024-11-09 07:19:43,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:19:43,340 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-09 07:19:43,344 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 40 treesize of output 28 [2024-11-09 07:19:43,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:19:43,363 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-09 07:19:43,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:19:43,373 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-09 07:19:43,377 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:19:43,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-09 07:19:43,382 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:19:43,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-09 07:19:43,861 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-09 07:19:43,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2024-11-09 07:19:43,867 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1849 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_1849) |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) |c_ULTIMATE.start_create_#t~mem12#1.base|)) is different from false [2024-11-09 07:19:43,966 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1848 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1848) |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) |c_ULTIMATE.start_create_~now~0#1.base|))) is different from false [2024-11-09 07:19:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2024-11-09 07:19:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918119119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:19:44,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095894502] [2024-11-09 07:19:44,186 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 07:19:44,187 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:19:44,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:19:44,187 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:19:44,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:19:49,990 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:19:50,004 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:20:32,753 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8329#(and (= (select |#valid| |ULTIMATE.start_create_~now~0#1.base|) 1) (exists ((|v_#memory_$Pointer$.offset_217| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_218| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_225| (Array Int (Array Int Int))) (|v_#memory_int_188| (Array Int (Array Int Int))) (|v_#memory_int_189| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_224| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_217| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_$Pointer$.offset_217| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) |v_#memory_$Pointer$.offset_218|) (<= 0 (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (= (store |v_#memory_int_188| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_int_188| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_int_189| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) |v_#memory_int_189|) (= (store |v_#memory_$Pointer$.base_224| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_$Pointer$.base_224| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) |v_#memory_$Pointer$.base_225|) (<= (+ (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) 8) (select |#length| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) (= |#memory_int| (store |v_#memory_int_189| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_int_189| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_218| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_$Pointer$.offset_218| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) |ULTIMATE.start_create_~data1~0#1.offset|))) (= (store |v_#memory_$Pointer$.base_225| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_$Pointer$.base_225| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_218| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) |ULTIMATE.start_create_~data1~0#1.base|)) |#memory_$Pointer$.base|) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_225| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) 1))) (<= (+ |ULTIMATE.start_create_~now~0#1.offset| 16) (select |#length| |ULTIMATE.start_create_~now~0#1.base|)) (<= 0 (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (or (< (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) 24)) (< (+ 16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) 0)))' at error location [2024-11-09 07:20:32,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:20:32,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:20:32,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 40 [2024-11-09 07:20:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89140805] [2024-11-09 07:20:32,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:20:32,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 07:20:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:20:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 07:20:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2850, Unknown=26, NotChecked=330, Total=3422 [2024-11-09 07:20:32,756 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 41 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:20:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:20:34,063 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2024-11-09 07:20:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:20:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) Word has length 33 [2024-11-09 07:20:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:20:34,064 INFO L225 Difference]: With dead ends: 113 [2024-11-09 07:20:34,064 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 07:20:34,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=301, Invalid=3591, Unknown=26, NotChecked=372, Total=4290 [2024-11-09 07:20:34,067 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:20:34,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 694 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 78 Unchecked, 0.7s Time] [2024-11-09 07:20:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 07:20:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-09 07:20:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 107 states have internal predecessors, (122), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:20:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2024-11-09 07:20:34,073 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 33 [2024-11-09 07:20:34,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:20:34,074 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2024-11-09 07:20:34,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:20:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2024-11-09 07:20:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:20:34,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:20:34,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:20:34,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 07:20:34,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 07:20:34,275 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:20:34,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:20:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 537707890, now seen corresponding path program 1 times [2024-11-09 07:20:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:20:34,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606947822] [2024-11-09 07:20:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:20:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:35,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:20:35,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606947822] [2024-11-09 07:20:35,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606947822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:35,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492073108] [2024-11-09 07:20:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:20:35,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:20:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:20:35,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:20:35,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:20:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:20:35,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 07:20:35,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:20:35,811 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:20:35,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:20:35,879 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 19 treesize of output 1 [2024-11-09 07:20:36,044 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:20:36,044 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 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-09 07:20:36,147 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:20:36,148 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 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 07:20:36,349 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 31 treesize of output 13 [2024-11-09 07:20:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:20:36,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:20:36,493 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-09 07:20:36,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 07:20:36,782 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1987 (Array Int Int)) (v_ArrVal_1986 (Array Int Int))) (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_1986))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_1987) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) .cse1))))) is different from false [2024-11-09 07:20:36,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:20:36,792 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 44 [2024-11-09 07:20:36,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:20:36,814 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 498 treesize of output 395 [2024-11-09 07:20:36,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:20:36,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 335 treesize of output 279 [2024-11-09 07:20:36,848 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 271 treesize of output 239 [2024-11-09 07:20:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492073108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:20:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968405866] [2024-11-09 07:20:37,347 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 07:20:37,347 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:20:37,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:20:37,348 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:20:37,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:20:45,892 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:20:45,912 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:21:52,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8771#(exists ((|v_ULTIMATE.start_loop_~x#1.base_45| Int)) (not (= (select |#valid| |v_ULTIMATE.start_loop_~x#1.base_45|) 1)))' at error location [2024-11-09 07:21:52,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:21:52,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:21:52,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-11-09 07:21:52,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231972544] [2024-11-09 07:21:52,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:21:52,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 07:21:52,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:21:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 07:21:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2604, Unknown=56, NotChecked=104, Total=2970 [2024-11-09 07:21:52,484 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:21:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:21:53,910 INFO L93 Difference]: Finished difference Result 120 states and 139 transitions. [2024-11-09 07:21:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:21:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-09 07:21:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:21:53,911 INFO L225 Difference]: With dead ends: 120 [2024-11-09 07:21:53,911 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 07:21:53,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 68.6s TimeCoverageRelationStatistics Valid=289, Invalid=3436, Unknown=61, NotChecked=120, Total=3906 [2024-11-09 07:21:53,913 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:21:53,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 589 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:21:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 07:21:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-11-09 07:21:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.372340425531915) internal successors, (129), 111 states have internal predecessors, (129), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:21:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2024-11-09 07:21:53,918 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 33 [2024-11-09 07:21:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:21:53,918 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2024-11-09 07:21:53,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:21:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2024-11-09 07:21:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:21:53,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:21:53,919 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:21:53,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:21:54,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 07:21:54,120 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:21:54,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:21:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash 537707891, now seen corresponding path program 1 times [2024-11-09 07:21:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:21:54,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486115275] [2024-11-09 07:21:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:54,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:21:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:55,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:21:55,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486115275] [2024-11-09 07:21:55,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486115275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:55,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808655618] [2024-11-09 07:21:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:21:55,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:21:55,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:21:55,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:21:55,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:21:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:21:55,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 07:21:55,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:21:55,919 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:21:55,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:21:55,978 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 13 treesize of output 9 [2024-11-09 07:21:55,989 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 19 treesize of output 1 [2024-11-09 07:21:56,131 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:21:56,132 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 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-09 07:21:56,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 07:21:56,225 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:21:56,226 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 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 07:21:56,237 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 30 treesize of output 13 [2024-11-09 07:21:56,435 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 31 treesize of output 13 [2024-11-09 07:21:56,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-09 07:21:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:21:56,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:21:56,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:56,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2024-11-09 07:21:56,775 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_2119 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2119) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0) 1)) (forall ((v_ArrVal_2118 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~mem12#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2118) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0))) (forall ((v_prenex_3 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_prenex_3) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0))))) is different from false [2024-11-09 07:21:56,791 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (and (forall ((v_prenex_3 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_prenex_3) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (forall ((v_ArrVal_2119 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2119) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 1)) (forall ((v_ArrVal_2118 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2118) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-09 07:21:56,826 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_2118 (Array Int Int)) (v_ArrVal_2117 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2117))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse3))) (= (select (select (store .cse0 .cse1 v_ArrVal_2118) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) .cse1)))) (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2117 (Array Int Int)) (v_ArrVal_2116 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2116) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2117) |c_ULTIMATE.start_create_~now~0#1.base|) .cse3) v_ArrVal_2119) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 1)) (forall ((v_ArrVal_2117 (Array Int Int)) (v_ArrVal_2116 (Array Int Int)) (v_prenex_3 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2116) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2117) |c_ULTIMATE.start_create_~now~0#1.base|) .cse3) v_prenex_3) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))))) is different from false [2024-11-09 07:21:57,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:57,085 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2024-11-09 07:21:57,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:57,093 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-09 07:21:57,098 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 64 treesize of output 52 [2024-11-09 07:21:57,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:57,115 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 200 treesize of output 187 [2024-11-09 07:21:57,123 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 66 treesize of output 62 [2024-11-09 07:21:57,130 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 62 treesize of output 54 [2024-11-09 07:21:57,137 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 80 treesize of output 68 [2024-11-09 07:21:57,208 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-09 07:21:57,209 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 1 [2024-11-09 07:21:57,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:57,218 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2024-11-09 07:21:57,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:21:57,229 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-09 07:21:57,233 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:21:57,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-11-09 07:21:57,239 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:21:57,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:21:57,244 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-09 07:21:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808655618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:21:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749694227] [2024-11-09 07:21:57,411 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-09 07:21:57,411 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:21:57,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:21:57,411 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:21:57,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:22:03,997 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:22:04,014 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:22:27,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9045#true' at error location [2024-11-09 07:22:27,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:22:27,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:22:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2024-11-09 07:22:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374789327] [2024-11-09 07:22:27,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:22:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 07:22:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 07:22:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2530, Unknown=25, NotChecked=312, Total=3080 [2024-11-09 07:22:27,797 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 29 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:22:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:29,079 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2024-11-09 07:22:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:22:29,079 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-09 07:22:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:29,080 INFO L225 Difference]: With dead ends: 120 [2024-11-09 07:22:29,080 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 07:22:29,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=284, Invalid=3124, Unknown=26, NotChecked=348, Total=3782 [2024-11-09 07:22:29,082 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 20 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:29,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 694 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:22:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 07:22:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-09 07:22:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3578947368421053) internal successors, (129), 112 states have internal predecessors, (129), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:22:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2024-11-09 07:22:29,087 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 33 [2024-11-09 07:22:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:29,087 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2024-11-09 07:22:29,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:22:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2024-11-09 07:22:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:22:29,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:29,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:29,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 07:22:29,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 07:22:29,289 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:22:29,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 64922049, now seen corresponding path program 1 times [2024-11-09 07:22:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:29,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133822229] [2024-11-09 07:22:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:22:29,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133822229] [2024-11-09 07:22:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133822229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:29,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 07:22:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579147789] [2024-11-09 07:22:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:29,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:22:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:22:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:22:29,959 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:22:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:30,539 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2024-11-09 07:22:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:22:30,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-09 07:22:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:30,540 INFO L225 Difference]: With dead ends: 118 [2024-11-09 07:22:30,540 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 07:22:30,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:22:30,541 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:30,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 310 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:22:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 07:22:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-09 07:22:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3473684210526315) internal successors, (128), 112 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:22:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2024-11-09 07:22:30,545 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 32 [2024-11-09 07:22:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:30,545 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2024-11-09 07:22:30,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:22:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2024-11-09 07:22:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 07:22:30,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:30,546 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:30,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-09 07:22:30,547 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:22:30,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash -510311785, now seen corresponding path program 1 times [2024-11-09 07:22:30,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:30,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325078785] [2024-11-09 07:22:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:30,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:22:30,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325078785] [2024-11-09 07:22:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325078785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:30,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141060657] [2024-11-09 07:22:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:30,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:22:30,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:30,919 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:22:30,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:22:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:31,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 07:22:31,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:22:31,377 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:22:31,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:22:31,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 07:22:31,574 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:22:31,575 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 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-09 07:22:31,659 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:22:31,659 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 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-09 07:22:31,831 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 30 treesize of output 12 [2024-11-09 07:22:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:31,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:22:32,042 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2285 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2285) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) 0))) is different from false [2024-11-09 07:22:32,260 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2285 (Array Int Int)) (v_ArrVal_2284 (Array Int Int))) (not (= (select (select (let ((.cse1 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_2284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_2285))) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) 0))) is different from false [2024-11-09 07:22:32,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:22:32,273 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2024-11-09 07:22:32,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:22:32,297 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 287 treesize of output 244 [2024-11-09 07:22:32,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:22:32,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 147 [2024-11-09 07:22:32,339 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 138 treesize of output 126 [2024-11-09 07:22:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141060657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:22:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265680803] [2024-11-09 07:22:32,671 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-09 07:22:32,671 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:22:32,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:22:32,672 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:22:32,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:22:40,931 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 07:22:40,944 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:11,613 WARN L286 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 296 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:23:28,763 WARN L286 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 302 DAG size of output: 294 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:23:51,096 WARN L286 SmtUtils]: Spent 13.81s on a formula simplification. DAG size of input: 323 DAG size of output: 314 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:24:00,096 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9756#true' at error location [2024-11-09 07:24:00,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:00,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:24:00,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 22 [2024-11-09 07:24:00,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994297733] [2024-11-09 07:24:00,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:00,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 07:24:00,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:00,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 07:24:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2083, Unknown=36, NotChecked=186, Total=2450 [2024-11-09 07:24:00,099 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 22 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:24:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:04,681 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2024-11-09 07:24:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:24:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2024-11-09 07:24:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:04,683 INFO L225 Difference]: With dead ends: 130 [2024-11-09 07:24:04,683 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 07:24:04,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 82.1s TimeCoverageRelationStatistics Valid=248, Invalid=3259, Unknown=41, NotChecked=234, Total=3782 [2024-11-09 07:24:04,685 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 37 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:04,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 596 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 07:24:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 07:24:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2024-11-09 07:24:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 111 states have internal predecessors, (125), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:24:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2024-11-09 07:24:04,690 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 34 [2024-11-09 07:24:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:04,690 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2024-11-09 07:24:04,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 07:24:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2024-11-09 07:24:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 07:24:04,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:04,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:04,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:24:04,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 07:24:04,892 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:24:04,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2034393254, now seen corresponding path program 1 times [2024-11-09 07:24:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737798860] [2024-11-09 07:24:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:24:05,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:05,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737798860] [2024-11-09 07:24:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737798860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:24:05,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:24:05,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:24:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485415974] [2024-11-09 07:24:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:24:05,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:24:05,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:24:05,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:24:05,229 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:24:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:05,874 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2024-11-09 07:24:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:24:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-09 07:24:05,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:05,875 INFO L225 Difference]: With dead ends: 118 [2024-11-09 07:24:05,875 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 07:24:05,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:24:05,876 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:05,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 200 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:24:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 07:24:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-09 07:24:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 112 states have internal predecessors, (126), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:24:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2024-11-09 07:24:05,881 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 34 [2024-11-09 07:24:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:05,881 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2024-11-09 07:24:05,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:24:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2024-11-09 07:24:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 07:24:05,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:05,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:05,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-09 07:24:05,883 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-09 07:24:05,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -72486960, now seen corresponding path program 2 times [2024-11-09 07:24:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345741836] [2024-11-09 07:24:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:09,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345741836] [2024-11-09 07:24:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345741836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892706114] [2024-11-09 07:24:09,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:09,476 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:09,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bde5693-986e-447e-809b-9bd7a944bf89/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:24:09,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 07:24:09,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:09,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-09 07:24:09,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:09,891 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 5 treesize of output 3 [2024-11-09 07:24:10,164 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 11 treesize of output 7 [2024-11-09 07:24:10,189 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 11 treesize of output 7 [2024-11-09 07:24:10,271 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:24:10,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:24:10,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-09 07:24:10,345 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 27 treesize of output 15 [2024-11-09 07:24:10,604 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 07:24:10,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2024-11-09 07:24:10,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-09 07:24:10,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:24:10,848 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 07:24:10,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 66 [2024-11-09 07:24:10,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:24:10,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2024-11-09 07:24:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:11,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:41,153 INFO L349 Elim1Store]: treesize reduction 1239, result has 43.4 percent of original size [2024-11-09 07:24:41,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 113713 treesize of output 98058 [2024-11-09 07:24:46,045 INFO L349 Elim1Store]: treesize reduction 411, result has 29.9 percent of original size [2024-11-09 07:24:46,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 20 new quantified variables, introduced 56 case distinctions, treesize of input 4480715 treesize of output 2829474 [2024-11-09 07:25:12,619 WARN L286 SmtUtils]: Spent 26.56s on a formula simplification. DAG size of input: 2949 DAG size of output: 1380 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 07:25:15,997 INFO L349 Elim1Store]: treesize reduction 542, result has 29.8 percent of original size [2024-11-09 07:25:16,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 46 case distinctions, treesize of input 199045 treesize of output 139180 [2024-11-09 07:25:24,357 INFO L349 Elim1Store]: treesize reduction 34, result has 92.7 percent of original size [2024-11-09 07:25:24,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 203245 treesize of output 147707 [2024-11-09 07:25:29,393 INFO L224 Elim1Store]: Index analysis took 401 ms [2024-11-09 07:25:32,234 INFO L349 Elim1Store]: treesize reduction 1162, result has 25.9 percent of original size [2024-11-09 07:25:32,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 56 case distinctions, treesize of input 144699 treesize of output 143884 [2024-11-09 07:25:37,361 INFO L224 Elim1Store]: Index analysis took 288 ms [2024-11-09 07:25:40,162 INFO L349 Elim1Store]: treesize reduction 202, result has 72.6 percent of original size [2024-11-09 07:25:40,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 140520 treesize of output 140680