./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/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_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:27:20,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:27:20,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:27:20,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:27:20,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:27:20,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:27:20,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:27:20,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:27:20,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:27:20,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:27:20,990 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:27:20,990 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:27:20,991 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:27:20,991 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:27:20,992 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:27:20,992 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:27:20,993 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:27:20,993 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:27:20,994 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:27:20,994 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:27:20,995 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:27:20,996 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:27:20,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:27:20,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:27:20,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:27:20,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:27:20,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:27:20,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:27:21,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:27:21,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:27:21,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:27:21,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:27:21,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:27:21,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:27:21,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:27:21,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:27:21,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:27:21,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:27:21,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:27:21,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:27:21,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:27:21,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:27:21,019 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:27:21,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:27:21,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:27:21,020 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:27:21,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:27:21,021 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_f60698c2-cc8e-4764-bf1e-03801f4abb9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-11-09 07:27:21,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:27:21,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:27:21,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:27:21,381 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:27:21,382 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:27:21,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i Unable to find full path for "g++" [2024-11-09 07:27:23,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:27:23,914 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:27:23,915 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-11-09 07:27:23,935 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/data/2113b010d/16d01e0c11224bb79c36e2bc610f3045/FLAG9506eddd4 [2024-11-09 07:27:24,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/data/2113b010d/16d01e0c11224bb79c36e2bc610f3045 [2024-11-09 07:27:24,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:27:24,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:27:24,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:27:24,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:27:24,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:27:24,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:24" (1/1) ... [2024-11-09 07:27:24,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39875fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:24, skipping insertion in model container [2024-11-09 07:27:24,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:27:24" (1/1) ... [2024-11-09 07:27:24,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:27:24,820 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2024-11-09 07:27:25,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:27:25,214 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:27:25,278 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2024-11-09 07:27:25,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:27:25,451 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:27:25,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25 WrapperNode [2024-11-09 07:27:25,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:27:25,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:27:25,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:27:25,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:27:25,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,715 INFO L138 Inliner]: procedures = 177, calls = 557, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3490 [2024-11-09 07:27:25,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:27:25,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:27:25,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:27:25,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:27:25,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:27:25,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:27:25,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:27:25,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:27:25,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (1/1) ... [2024-11-09 07:27:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:27:25,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:27:26,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:27:26,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:27:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-09 07:27:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-09 07:27:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:27:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:27:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:27:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:27:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 07:27:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 07:27:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:27:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:27:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:27:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:27:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:27:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:27:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:27:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:27:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:27:26,432 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:27:26,435 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:27:30,869 INFO L? ?]: Removed 806 outVars from TransFormulas that were not future-live. [2024-11-09 07:27:30,870 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:27:35,875 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:27:35,879 INFO L316 CfgBuilder]: Removed 147 assume(true) statements. [2024-11-09 07:27:35,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:27:35 BoogieIcfgContainer [2024-11-09 07:27:35,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:27:35,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:27:35,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:27:35,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:27:35,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:27:24" (1/3) ... [2024-11-09 07:27:35,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676767a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:35, skipping insertion in model container [2024-11-09 07:27:35,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:27:25" (2/3) ... [2024-11-09 07:27:35,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676767a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:27:35, skipping insertion in model container [2024-11-09 07:27:35,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:27:35" (3/3) ... [2024-11-09 07:27:35,894 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2024-11-09 07:27:35,917 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:27:35,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:27:36,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:27:36,032 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=LoopHeads, 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;@793336b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:27:36,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:27:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 289 states have (on average 1.7474048442906573) internal successors, (505), 294 states have internal predecessors, (505), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 07:27:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 07:27:36,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:27:36,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:27:36,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:27:36,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:27:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1511579636, now seen corresponding path program 1 times [2024-11-09 07:27:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:27:36,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769834491] [2024-11-09 07:27:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:27:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:27:36,361 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 07:27:36,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:27:36,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769834491] [2024-11-09 07:27:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769834491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:27:36,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:27:36,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:27:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805497249] [2024-11-09 07:27:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:27:36,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:27:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:27:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:27:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:27:36,415 INFO L87 Difference]: Start difference. First operand has 308 states, 289 states have (on average 1.7474048442906573) internal successors, (505), 294 states have internal predecessors, (505), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:27:38,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:40,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:42,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:44,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:46,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:48,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:50,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:52,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:55,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:57,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:59,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:27:59,866 INFO L93 Difference]: Finished difference Result 615 states and 1073 transitions. [2024-11-09 07:27:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:27:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 07:27:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:27:59,884 INFO L225 Difference]: With dead ends: 615 [2024-11-09 07:27:59,884 INFO L226 Difference]: Without dead ends: 289 [2024-11-09 07:27:59,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:27:59,894 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:27:59,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 329 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 10 Unknown, 0 Unchecked, 23.4s Time] [2024-11-09 07:27:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-09 07:28:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-09 07:28:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 271 states have (on average 1.2140221402214022) internal successors, (329), 276 states have internal predecessors, (329), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:28:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 356 transitions. [2024-11-09 07:28:00,074 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 356 transitions. Word has length 12 [2024-11-09 07:28:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:28:00,078 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 356 transitions. [2024-11-09 07:28:00,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:28:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 356 transitions. [2024-11-09 07:28:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:28:00,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:00,084 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 07:28:00,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:28:00,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:00,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1238425371, now seen corresponding path program 1 times [2024-11-09 07:28:00,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553739827] [2024-11-09 07:28:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:00,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:00,732 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 07:28:00,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553739827] [2024-11-09 07:28:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553739827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:28:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:28:00,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:28:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851901484] [2024-11-09 07:28:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:28:00,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:28:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:28:00,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:28:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:28:00,741 INFO L87 Difference]: Start difference. First operand 289 states and 356 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:28:02,827 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 [] [2024-11-09 07:28:04,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:06,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:08,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:10,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:12,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:14,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:16,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:19,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:21,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:23,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:25,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:27,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:29,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:31,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:33,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:36,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:38,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:39,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:41,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:44,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:46,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:48,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:50,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:52,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:54,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:58,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:29:00,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:02,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:04,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:06,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:08,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:10,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:11,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:13,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:29:13,310 INFO L93 Difference]: Finished difference Result 495 states and 613 transitions. [2024-11-09 07:29:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:29:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 07:29:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:29:13,314 INFO L225 Difference]: With dead ends: 495 [2024-11-09 07:29:13,314 INFO L226 Difference]: Without dead ends: 322 [2024-11-09 07:29:13,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:29:13,317 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 35 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:29:13,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 884 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 29 Unknown, 0 Unchecked, 72.5s Time] [2024-11-09 07:29:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-09 07:29:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 291. [2024-11-09 07:29:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 273 states have (on average 1.2124542124542124) internal successors, (331), 278 states have internal predecessors, (331), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:29:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 358 transitions. [2024-11-09 07:29:13,359 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 358 transitions. Word has length 27 [2024-11-09 07:29:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:29:13,360 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 358 transitions. [2024-11-09 07:29:13,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:29:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 358 transitions. [2024-11-09 07:29:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:29:13,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:29:13,365 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:13,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:29:13,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:29:13,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:29:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1541356368, now seen corresponding path program 1 times [2024-11-09 07:29:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:29:13,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147377046] [2024-11-09 07:29:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:29:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:29:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:29:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:29:13,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:29:13,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147377046] [2024-11-09 07:29:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147377046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:29:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:29:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:29:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165063646] [2024-11-09 07:29:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:29:13,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:29:13,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:29:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:29:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:29:13,809 INFO L87 Difference]: Start difference. First operand 291 states and 358 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:29:15,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:17,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:19,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:21,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:23,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:29:25,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:27,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:29,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:31,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:33,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:34,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:36,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:38,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:41,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:43,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:45,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:47,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:50,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:52,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:54,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:56,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:59,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:01,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:03,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:05,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:07,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:09,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:30:09,281 INFO L93 Difference]: Finished difference Result 716 states and 878 transitions. [2024-11-09 07:30:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:30:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 07:30:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:30:09,285 INFO L225 Difference]: With dead ends: 716 [2024-11-09 07:30:09,285 INFO L226 Difference]: Without dead ends: 428 [2024-11-09 07:30:09,287 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 07:30:09,288 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 138 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:30:09,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 673 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 23 Unknown, 0 Unchecked, 55.4s Time] [2024-11-09 07:30:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-09 07:30:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 423. [2024-11-09 07:30:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 400 states have (on average 1.1975) internal successors, (479), 405 states have internal predecessors, (479), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 07:30:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 516 transitions. [2024-11-09 07:30:09,333 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 516 transitions. Word has length 57 [2024-11-09 07:30:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:30:09,333 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 516 transitions. [2024-11-09 07:30:09,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:30:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 516 transitions. [2024-11-09 07:30:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 07:30:09,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:30:09,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:30:09,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:30:09,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:30:09,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:30:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 350464572, now seen corresponding path program 1 times [2024-11-09 07:30:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:30:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982272171] [2024-11-09 07:30:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:30:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:30:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:30:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:30:10,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:30:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982272171] [2024-11-09 07:30:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982272171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:30:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:30:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:30:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790286390] [2024-11-09 07:30:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:30:10,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:30:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:30:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:30:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:30:10,836 INFO L87 Difference]: Start difference. First operand 423 states and 516 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:30:13,265 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 [] [2024-11-09 07:30:15,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:17,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:20,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:22,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:28,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:30,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:32,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:34,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:36,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:38,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:40,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:43,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:45,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:46,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:48,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:50,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:52,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:56,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:58,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:00,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:02,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:04,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:06,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:08,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:10,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:12,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:14,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:16,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:18,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:31:18,718 INFO L93 Difference]: Finished difference Result 788 states and 963 transitions. [2024-11-09 07:31:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:31:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2024-11-09 07:31:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:31:18,721 INFO L225 Difference]: With dead ends: 788 [2024-11-09 07:31:18,722 INFO L226 Difference]: Without dead ends: 423 [2024-11-09 07:31:18,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:31:18,724 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 17 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:31:18,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 848 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 29 Unknown, 0 Unchecked, 67.8s Time] [2024-11-09 07:31:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-09 07:31:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2024-11-09 07:31:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 400 states have (on average 1.195) internal successors, (478), 405 states have internal predecessors, (478), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 07:31:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 515 transitions. [2024-11-09 07:31:18,748 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 515 transitions. Word has length 70 [2024-11-09 07:31:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:31:18,748 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 515 transitions. [2024-11-09 07:31:18,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:31:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 515 transitions. [2024-11-09 07:31:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 07:31:18,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:31:18,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:18,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:31:18,753 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:31:18,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:31:18,753 INFO L85 PathProgramCache]: Analyzing trace with hash 8501053, now seen corresponding path program 1 times [2024-11-09 07:31:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:31:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446993286] [2024-11-09 07:31:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:31:18,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:31:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:31:19,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:31:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446993286] [2024-11-09 07:31:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446993286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:31:19,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:31:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:31:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681830475] [2024-11-09 07:31:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:31:19,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:31:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:31:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:31:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:31:19,360 INFO L87 Difference]: Start difference. First operand 423 states and 515 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:31:21,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:23,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:25,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:27,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:29,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:32,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:34,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:36,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:38,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:40,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:42,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:44,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:47,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:49,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:31:51,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:53,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:55,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:57,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:59,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:01,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:03,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:05,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:07,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:09,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:11,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:13,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:14,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:16,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:18,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:32:18,845 INFO L93 Difference]: Finished difference Result 964 states and 1174 transitions. [2024-11-09 07:32:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:32:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 96 [2024-11-09 07:32:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:32:18,850 INFO L225 Difference]: With dead ends: 964 [2024-11-09 07:32:18,850 INFO L226 Difference]: Without dead ends: 570 [2024-11-09 07:32:18,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:32:18,852 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 127 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:32:18,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 611 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 26 Unknown, 0 Unchecked, 59.4s Time] [2024-11-09 07:32:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-09 07:32:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 504. [2024-11-09 07:32:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 478 states have (on average 1.1882845188284519) internal successors, (568), 483 states have internal predecessors, (568), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 07:32:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 611 transitions. [2024-11-09 07:32:18,882 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 611 transitions. Word has length 96 [2024-11-09 07:32:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:32:18,883 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 611 transitions. [2024-11-09 07:32:18,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:32:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 611 transitions. [2024-11-09 07:32:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 07:32:18,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:32:18,886 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:32:18,886 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:32:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:32:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -110698138, now seen corresponding path program 1 times [2024-11-09 07:32:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:32:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878756623] [2024-11-09 07:32:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:32:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:32:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:32:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 07:32:19,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:32:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878756623] [2024-11-09 07:32:19,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878756623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:32:19,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:32:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:32:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755539941] [2024-11-09 07:32:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:32:19,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:32:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:32:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:32:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:32:19,530 INFO L87 Difference]: Start difference. First operand 504 states and 611 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:32:21,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:24,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:26,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:28,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:29,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:31,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:33,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:35,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:37,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:39,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:41,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:44,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:46,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:48,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:50,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:32:50,519 INFO L93 Difference]: Finished difference Result 844 states and 1029 transitions. [2024-11-09 07:32:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:32:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 109 [2024-11-09 07:32:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:32:50,523 INFO L225 Difference]: With dead ends: 844 [2024-11-09 07:32:50,523 INFO L226 Difference]: Without dead ends: 412 [2024-11-09 07:32:50,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:32:50,525 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 530 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 14 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:32:50,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 376 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 89 Invalid, 13 Unknown, 0 Unchecked, 30.9s Time] [2024-11-09 07:32:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-09 07:32:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-11-09 07:32:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 391 states have (on average 1.186700767263427) internal successors, (464), 396 states have internal predecessors, (464), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 07:32:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2024-11-09 07:32:50,549 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 109 [2024-11-09 07:32:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:32:50,549 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2024-11-09 07:32:50,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:32:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2024-11-09 07:32:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 07:32:50,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:32:50,552 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:32:50,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:32:50,552 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:32:50,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:32:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 376605612, now seen corresponding path program 1 times [2024-11-09 07:32:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:32:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760355163] [2024-11-09 07:32:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:32:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:32:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:32:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 07:32:55,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:32:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760355163] [2024-11-09 07:32:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760355163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:32:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242640189] [2024-11-09 07:32:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:32:55,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:32:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:32:55,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:32:55,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:33:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:33:01,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:33:01,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:33:01,502 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:33:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242640189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:33:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:33:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-09 07:33:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103978504] [2024-11-09 07:33:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:33:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:33:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:33:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:33:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:33:01,505 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:33:03,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:05,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:08,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:10,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:12,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:14,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:16,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:18,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:19,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:22,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:33:24,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:26,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:28,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:30,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:32,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:35,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:37,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:39,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:41,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:33:43,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:45,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:47,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:49,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:51,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:53,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:55,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:57,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:59,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:34:01,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:34:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:02,415 INFO L93 Difference]: Finished difference Result 803 states and 977 transitions. [2024-11-09 07:34:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:34:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 117 [2024-11-09 07:34:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:02,418 INFO L225 Difference]: With dead ends: 803 [2024-11-09 07:34:02,419 INFO L226 Difference]: Without dead ends: 414 [2024-11-09 07:34:02,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:02,421 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:02,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 920 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 26 Unknown, 0 Unchecked, 60.9s Time] [2024-11-09 07:34:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-09 07:34:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-09 07:34:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 392 states have (on average 1.1887755102040816) internal successors, (466), 398 states have internal predecessors, (466), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2024-11-09 07:34:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 502 transitions. [2024-11-09 07:34:02,446 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 502 transitions. Word has length 117 [2024-11-09 07:34:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:02,447 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 502 transitions. [2024-11-09 07:34:02,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:34:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 502 transitions. [2024-11-09 07:34:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 07:34:02,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:02,449 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:02,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:02,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:02,650 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:34:02,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1258614612, now seen corresponding path program 1 times [2024-11-09 07:34:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:34:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879619912] [2024-11-09 07:34:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 07:34:08,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:34:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879619912] [2024-11-09 07:34:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879619912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168977152] [2024-11-09 07:34:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:08,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:34:08,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:08,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60698c2-cc8e-4764-bf1e-03801f4abb9f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:34:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:37,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:34:37,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 07:34:37,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 07:34:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168977152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:37,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2067051747] [2024-11-09 07:34:37,477 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2024-11-09 07:34:37,477 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:34:37,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:34:37,487 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:34:37,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:35:22,859 INFO L197 IcfgInterpreter]: Interpreting procedure test_int_int with input of size 21 for LOIs [2024-11-09 07:35:22,882 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 07:35:22,891 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 29 for LOIs [2024-11-09 07:35:22,944 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:35:55,253 WARN L286 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 239 DAG size of output: 227 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:36:09,853 WARN L286 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 243 DAG size of output: 227 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:36:45,846 WARN L286 SmtUtils]: Spent 29.48s on a formula simplification. DAG size of input: 500 DAG size of output: 312 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:36:45,894 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~user~0#1.base|)) (.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|))) (or (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 32)) (.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 36)) (.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 28))) (and (exists ((|v_#memory_$Pointer$.base_713| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_13| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_$Pointer$.base_13| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_13| |c_ULTIMATE.start_main_~user~0#1.base| (store (store .cse0 .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2 (select .cse3 .cse2)))) (= (store |v_#memory_$Pointer$.base_713| |c_ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_713| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4 (select .cse0 .cse4))) |v_#memory_$Pointer$.base_13|)))) (exists ((|v_#memory_$Pointer$.offset_713| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_13| (Array Int (Array Int Int)))) (let ((.cse5 (select |v_#memory_$Pointer$.offset_13| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_13| |c_ULTIMATE.start_main_~user~0#1.base| (store (store .cse5 .cse1 |c_ULTIMATE.start_main_~user~0#1.offset|) .cse2 (select .cse6 .cse2)))) (= (store |v_#memory_$Pointer$.offset_713| |c_ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_713| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4 (select .cse5 .cse4))) |v_#memory_$Pointer$.offset_13|)))) (exists ((|v_#memory_int_1007| (Array Int (Array Int Int))) (|v_#memory_int_26| (Array Int (Array Int Int)))) (let ((.cse7 (select |v_#memory_int_26| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= (store |v_#memory_int_26| |c_ULTIMATE.start_main_~user~0#1.base| (store .cse7 .cse2 4)) |c_#memory_int|) (= |v_#memory_int_26| (store |v_#memory_int_1007| |c_ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_1007| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) .cse1 (select .cse7 .cse1))))))))) (and (= c_~count_int_int~0 0) (<= 2 |c_ULTIMATE.start_main_~#i~0#1.base|) (= |c_ULTIMATE.start_main_~altusers~0#1.base| 0) (= |c_ULTIMATE.start_main_~user~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.offset_13| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_681| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_$Pointer$.offset_13| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= (store |v_#memory_$Pointer$.offset_681| |c_ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_681| |c_ULTIMATE.start_main_~user~0#1.base|) 36 (select .cse8 36))) |v_#memory_$Pointer$.offset_13|) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_13| |c_ULTIMATE.start_main_~user~0#1.base| (store (store .cse8 28 0) 32 (select .cse6 32))))))) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~altusers~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.base_13| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_681| (Array Int (Array Int Int)))) (let ((.cse9 (select |v_#memory_$Pointer$.base_13| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= |v_#memory_$Pointer$.base_13| (store |v_#memory_$Pointer$.base_681| |c_ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_681| |c_ULTIMATE.start_main_~user~0#1.base|) 36 (select .cse9 36)))) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_13| |c_ULTIMATE.start_main_~user~0#1.base| (store (store .cse9 28 |c_ULTIMATE.start_main_~user~0#1.base|) 32 (select .cse3 32))))))) (exists ((|v_#memory_int_975| (Array Int (Array Int Int))) (|v_#memory_int_26| (Array Int (Array Int Int)))) (let ((.cse10 (select |v_#memory_int_26| |c_ULTIMATE.start_main_~user~0#1.base|))) (and (= |v_#memory_int_26| (store |v_#memory_int_975| |c_ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_975| |c_ULTIMATE.start_main_~user~0#1.base|) 36 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 28 (select .cse10 28)))) (= (store |v_#memory_int_26| |c_ULTIMATE.start_main_~user~0#1.base| (store .cse10 32 4)) |c_#memory_int|)))) (= |c_ULTIMATE.start_main_~#i~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.base| 0)))) is different from true [2024-11-09 07:37:13,316 WARN L286 SmtUtils]: Spent 8.94s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:37:34,413 WARN L286 SmtUtils]: Spent 8.79s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:38:28,198 WARN L286 SmtUtils]: Spent 15.66s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)