./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/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_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:46:35,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:46:35,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:46:35,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:46:35,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:46:35,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:46:35,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:46:35,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:46:35,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:46:35,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:46:35,726 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:46:35,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:46:35,727 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:46:35,727 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:46:35,731 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:46:35,731 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:46:35,732 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:46:35,732 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:46:35,732 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:46:35,733 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:46:35,733 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:46:35,734 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:46:35,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:46:35,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:46:35,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:46:35,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:46:35,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:46:35,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:46:35,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:46:35,743 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:46:35,744 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:46:35,744 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:46:35,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:46:35,745 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:46:35,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:46:35,747 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:46:35,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:46:35,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:46:35,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:46:35,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:46:35,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:46:35,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:46:35,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:46:35,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:46:35,751 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:46:35,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:46:35,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:46:35,752 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:46:35,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:46:35,753 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_c149b4b0-427e-4671-b67f-f2464e2c43c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-09 04:46:36,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:46:36,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:46:36,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:46:36,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:46:36,199 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:46:36,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i Unable to find full path for "g++" [2024-11-09 04:46:38,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:46:39,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:46:39,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i [2024-11-09 04:46:39,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/data/c0ce5600a/31c57b08d6974adbb59983846b553069/FLAG54f9860aa [2024-11-09 04:46:39,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/data/c0ce5600a/31c57b08d6974adbb59983846b553069 [2024-11-09 04:46:39,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:46:39,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:46:39,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:46:39,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:46:39,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:46:39,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:46:39" (1/1) ... [2024-11-09 04:46:39,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e1573d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:39, skipping insertion in model container [2024-11-09 04:46:39,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:46:39" (1/1) ... [2024-11-09 04:46:39,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:46:40,049 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,091 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,097 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,106 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,123 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,193 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,194 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,197 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,200 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:46:40,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:46:40,234 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:46:40,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:46:40,400 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:46:40,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40 WrapperNode [2024-11-09 04:46:40,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:46:40,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:46:40,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:46:40,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:46:40,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,583 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1259 [2024-11-09 04:46:40,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:46:40,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:46:40,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:46:40,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:46:40,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:46:40,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:46:40,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:46:40,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:46:40,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (1/1) ... [2024-11-09 04:46:40,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:46:40,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:40,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:46:40,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 04:46:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 04:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:46:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:46:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:46:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:46:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:46:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:46:41,194 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:46:41,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:46:41,202 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 04:46:44,386 INFO L? ?]: Removed 1024 outVars from TransFormulas that were not future-live. [2024-11-09 04:46:44,386 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:46:46,209 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:46:46,214 INFO L316 CfgBuilder]: Removed 50 assume(true) statements. [2024-11-09 04:46:46,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:46:46 BoogieIcfgContainer [2024-11-09 04:46:46,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:46:46,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:46:46,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:46:46,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:46:46,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:46:39" (1/3) ... [2024-11-09 04:46:46,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d334bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:46:46, skipping insertion in model container [2024-11-09 04:46:46,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:46:40" (2/3) ... [2024-11-09 04:46:46,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d334bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:46:46, skipping insertion in model container [2024-11-09 04:46:46,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:46:46" (3/3) ... [2024-11-09 04:46:46,225 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-1.i [2024-11-09 04:46:46,246 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:46:46,247 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-09 04:46:46,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:46:46,350 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d42c393, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:46:46,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-09 04:46:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 777 states, 355 states have (on average 2.4704225352112674) internal successors, (877), 772 states have internal predecessors, (877), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:46:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:46:46,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:46,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:46:46,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:46:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2017653, now seen corresponding path program 1 times [2024-11-09 04:46:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:46:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31043064] [2024-11-09 04:46:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:46:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:46,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:46:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31043064] [2024-11-09 04:46:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31043064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:46:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:46:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:46:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149698823] [2024-11-09 04:46:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:46:46,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:46:46,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:46:46,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:46:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:46:46,707 INFO L87 Difference]: Start difference. First operand has 777 states, 355 states have (on average 2.4704225352112674) internal successors, (877), 772 states have internal predecessors, (877), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:49,023 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 04:46:51,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:46:53,120 WARN L539 Checker$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 04:46:55,142 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 04:46:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:55,870 INFO L93 Difference]: Finished difference Result 764 states and 816 transitions. [2024-11-09 04:46:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:46:55,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:46:55,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:55,901 INFO L225 Difference]: With dead ends: 764 [2024-11-09 04:46:55,901 INFO L226 Difference]: Without dead ends: 763 [2024-11-09 04:46:55,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:46:55,907 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 708 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:55,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 451 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 449 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time] [2024-11-09 04:46:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-09 04:46:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2024-11-09 04:46:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 358 states have (on average 2.2597765363128492) internal successors, (809), 758 states have internal predecessors, (809), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:46:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 815 transitions. [2024-11-09 04:46:56,012 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 815 transitions. Word has length 3 [2024-11-09 04:46:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:56,013 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 815 transitions. [2024-11-09 04:46:56,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 815 transitions. [2024-11-09 04:46:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:46:56,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:56,018 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:46:56,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:46:56,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:46:56,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2017654, now seen corresponding path program 1 times [2024-11-09 04:46:56,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:46:56,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209857866] [2024-11-09 04:46:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:56,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:46:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:56,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:46:56,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209857866] [2024-11-09 04:46:56,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209857866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:46:56,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:46:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:46:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376394694] [2024-11-09 04:46:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:46:56,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:46:56,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:46:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:46:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:46:56,160 INFO L87 Difference]: Start difference. First operand 763 states and 815 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:46:58,437 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 04:47:00,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:02,483 WARN L539 Checker$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 04:47:04,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:06,344 WARN L539 Checker$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 04:47:08,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:10,340 WARN L539 Checker$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 04:47:12,372 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 04:47:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:47:12,784 INFO L93 Difference]: Finished difference Result 956 states and 1031 transitions. [2024-11-09 04:47:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:47:12,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:47:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:47:12,790 INFO L225 Difference]: With dead ends: 956 [2024-11-09 04:47:12,790 INFO L226 Difference]: Without dead ends: 956 [2024-11-09 04:47:12,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:47:12,792 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 216 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:47:12,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1025 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 577 Invalid, 6 Unknown, 0 Unchecked, 16.5s Time] [2024-11-09 04:47:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-09 04:47:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 870. [2024-11-09 04:47:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 466 states have (on average 2.1931330472103006) internal successors, (1022), 865 states have internal predecessors, (1022), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:47:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1028 transitions. [2024-11-09 04:47:12,846 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1028 transitions. Word has length 3 [2024-11-09 04:47:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:47:12,847 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1028 transitions. [2024-11-09 04:47:12,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1028 transitions. [2024-11-09 04:47:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 04:47:12,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:47:12,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 04:47:12,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:47:12,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:47:12,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:47:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2019630, now seen corresponding path program 1 times [2024-11-09 04:47:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:47:12,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569267305] [2024-11-09 04:47:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:47:12,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:47:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:47:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:47:12,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:47:12,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569267305] [2024-11-09 04:47:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569267305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:47:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:47:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:47:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867554384] [2024-11-09 04:47:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:47:12,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:47:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:47:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:47:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:47:12,995 INFO L87 Difference]: Start difference. First operand 870 states and 1028 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:15,246 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 04:47:17,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:19,295 WARN L539 Checker$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 04:47:21,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:23,310 WARN L539 Checker$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 04:47:25,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:27,384 WARN L539 Checker$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 04:47:29,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:31,410 WARN L539 Checker$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 04:47:33,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:36,602 WARN L539 Checker$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 04:47:38,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:40,611 WARN L539 Checker$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 04:47:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:47:41,097 INFO L93 Difference]: Finished difference Result 957 states and 1031 transitions. [2024-11-09 04:47:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:47:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 04:47:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:47:41,103 INFO L225 Difference]: With dead ends: 957 [2024-11-09 04:47:41,103 INFO L226 Difference]: Without dead ends: 955 [2024-11-09 04:47:41,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:47:41,105 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 217 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:47:41,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1415 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 987 Invalid, 13 Unknown, 0 Unchecked, 28.0s Time] [2024-11-09 04:47:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-11-09 04:47:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 870. [2024-11-09 04:47:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 466 states have (on average 2.188841201716738) internal successors, (1020), 865 states have internal predecessors, (1020), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:47:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1026 transitions. [2024-11-09 04:47:41,134 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1026 transitions. Word has length 3 [2024-11-09 04:47:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:47:41,134 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1026 transitions. [2024-11-09 04:47:41,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1026 transitions. [2024-11-09 04:47:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 04:47:41,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:47:41,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 04:47:41,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:47:41,136 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:47:41,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:47:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash -21578373, now seen corresponding path program 1 times [2024-11-09 04:47:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:47:41,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055842161] [2024-11-09 04:47:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:47:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:47:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:47:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:47:41,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:47:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055842161] [2024-11-09 04:47:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055842161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:47:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:47:41,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:47:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931833974] [2024-11-09 04:47:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:47:41,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:47:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:47:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:47:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:47:41,577 INFO L87 Difference]: Start difference. First operand 870 states and 1026 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:44,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:46,401 WARN L539 Checker$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 04:47:48,418 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 04:47:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:47:49,362 INFO L93 Difference]: Finished difference Result 859 states and 1014 transitions. [2024-11-09 04:47:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:47:49,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 04:47:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:47:49,367 INFO L225 Difference]: With dead ends: 859 [2024-11-09 04:47:49,367 INFO L226 Difference]: Without dead ends: 859 [2024-11-09 04:47:49,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:47:49,368 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 781 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:47:49,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 225 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 657 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2024-11-09 04:47:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-09 04:47:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2024-11-09 04:47:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 466 states have (on average 2.163090128755365) internal successors, (1008), 854 states have internal predecessors, (1008), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:47:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1014 transitions. [2024-11-09 04:47:49,397 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1014 transitions. Word has length 6 [2024-11-09 04:47:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:47:49,397 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1014 transitions. [2024-11-09 04:47:49,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1014 transitions. [2024-11-09 04:47:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:47:49,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:47:49,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:47:49,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:47:49,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:47:49,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:47:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -668929584, now seen corresponding path program 1 times [2024-11-09 04:47:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:47:49,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519951109] [2024-11-09 04:47:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:47:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:47:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:47:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:47:49,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:47:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519951109] [2024-11-09 04:47:49,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519951109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:47:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:47:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:47:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284603804] [2024-11-09 04:47:49,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:47:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:47:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:47:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:47:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:47:49,505 INFO L87 Difference]: Start difference. First operand 859 states and 1014 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:47:51,670 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 04:47:53,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:55,695 WARN L539 Checker$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 04:47:57,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:47:59,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:01,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:03,658 WARN L539 Checker$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 04:48:05,684 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 04:48:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:06,057 INFO L93 Difference]: Finished difference Result 897 states and 969 transitions. [2024-11-09 04:48:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:48:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 04:48:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:06,062 INFO L225 Difference]: With dead ends: 897 [2024-11-09 04:48:06,062 INFO L226 Difference]: Without dead ends: 897 [2024-11-09 04:48:06,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:48:06,063 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 676 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 50 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:06,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 657 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 572 Invalid, 7 Unknown, 0 Unchecked, 16.5s Time] [2024-11-09 04:48:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-09 04:48:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 812. [2024-11-09 04:48:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 466 states have (on average 2.0622317596566524) internal successors, (961), 807 states have internal predecessors, (961), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:48:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 967 transitions. [2024-11-09 04:48:06,088 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 967 transitions. Word has length 7 [2024-11-09 04:48:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:06,089 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 967 transitions. [2024-11-09 04:48:06,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 967 transitions. [2024-11-09 04:48:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:48:06,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:06,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:06,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:48:06,091 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:48:06,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -668929583, now seen corresponding path program 1 times [2024-11-09 04:48:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626054995] [2024-11-09 04:48:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:06,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626054995] [2024-11-09 04:48:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626054995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:48:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274196815] [2024-11-09 04:48:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:06,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:48:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:48:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:48:06,218 INFO L87 Difference]: Start difference. First operand 812 states and 967 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:08,379 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 04:48:10,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:12,408 WARN L539 Checker$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 04:48:14,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:16,450 WARN L539 Checker$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 04:48:18,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:20,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:22,420 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 04:48:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:22,760 INFO L93 Difference]: Finished difference Result 984 states and 1161 transitions. [2024-11-09 04:48:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:48:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 04:48:22,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:22,766 INFO L225 Difference]: With dead ends: 984 [2024-11-09 04:48:22,766 INFO L226 Difference]: Without dead ends: 984 [2024-11-09 04:48:22,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:48:22,768 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 499 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 26 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:22,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 853 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 16.5s Time] [2024-11-09 04:48:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-09 04:48:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 787. [2024-11-09 04:48:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 466 states have (on average 2.0085836909871246) internal successors, (936), 782 states have internal predecessors, (936), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:48:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 942 transitions. [2024-11-09 04:48:22,793 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 942 transitions. Word has length 7 [2024-11-09 04:48:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:22,794 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 942 transitions. [2024-11-09 04:48:22,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 942 transitions. [2024-11-09 04:48:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:48:22,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:22,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:22,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:48:22,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:48:22,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 538357402, now seen corresponding path program 1 times [2024-11-09 04:48:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:22,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123614626] [2024-11-09 04:48:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:22,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:22,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123614626] [2024-11-09 04:48:22,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123614626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:22,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:48:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548003764] [2024-11-09 04:48:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:22,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:48:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:48:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:48:22,903 INFO L87 Difference]: Start difference. First operand 787 states and 942 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:25,148 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 04:48:27,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:29,181 WARN L539 Checker$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 04:48:31,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:33,235 WARN L539 Checker$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 04:48:35,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:37,256 WARN L539 Checker$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 04:48:39,267 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 04:48:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:39,919 INFO L93 Difference]: Finished difference Result 772 states and 904 transitions. [2024-11-09 04:48:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:48:39,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:48:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:39,924 INFO L225 Difference]: With dead ends: 772 [2024-11-09 04:48:39,924 INFO L226 Difference]: Without dead ends: 772 [2024-11-09 04:48:39,924 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 04:48:39,925 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 680 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 29 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:39,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 682 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 719 Invalid, 8 Unknown, 0 Unchecked, 17.0s Time] [2024-11-09 04:48:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-09 04:48:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 764. [2024-11-09 04:48:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 466 states have (on average 1.909871244635193) internal successors, (890), 759 states have internal predecessors, (890), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:48:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 896 transitions. [2024-11-09 04:48:39,945 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 896 transitions. Word has length 14 [2024-11-09 04:48:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:39,946 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 896 transitions. [2024-11-09 04:48:39,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 896 transitions. [2024-11-09 04:48:39,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:48:39,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:39,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:39,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 04:48:39,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:48:39,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:39,948 INFO L85 PathProgramCache]: Analyzing trace with hash 538357403, now seen corresponding path program 1 times [2024-11-09 04:48:39,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715228076] [2024-11-09 04:48:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:40,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715228076] [2024-11-09 04:48:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715228076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:40,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:48:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447478983] [2024-11-09 04:48:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:40,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:48:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:48:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:48:40,087 INFO L87 Difference]: Start difference. First operand 764 states and 896 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:42,279 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 04:48:43,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:45,622 WARN L539 Checker$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 04:48:47,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:49,633 WARN L539 Checker$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 04:48:51,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:53,658 WARN L539 Checker$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 04:48:56,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:48:58,539 WARN L539 Checker$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 04:49:00,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:02,575 WARN L539 Checker$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 04:49:04,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:06,581 WARN L539 Checker$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 04:49:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:07,052 INFO L93 Difference]: Finished difference Result 805 states and 869 transitions. [2024-11-09 04:49:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:49:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:07,056 INFO L225 Difference]: With dead ends: 805 [2024-11-09 04:49:07,056 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 04:49:07,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 04:49:07,058 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 200 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 15 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:07,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1186 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 896 Invalid, 12 Unknown, 0 Unchecked, 26.9s Time] [2024-11-09 04:49:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 04:49:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 754. [2024-11-09 04:49:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 456 states have (on average 1.8793859649122806) internal successors, (857), 749 states have internal predecessors, (857), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:49:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 863 transitions. [2024-11-09 04:49:07,077 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 863 transitions. Word has length 14 [2024-11-09 04:49:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:07,078 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 863 transitions. [2024-11-09 04:49:07,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 863 transitions. [2024-11-09 04:49:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:49:07,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:07,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:07,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:49:07,080 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:49:07,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -484018869, now seen corresponding path program 1 times [2024-11-09 04:49:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921432053] [2024-11-09 04:49:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:07,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921432053] [2024-11-09 04:49:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921432053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:07,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:49:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369058367] [2024-11-09 04:49:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:07,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:07,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:07,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:07,151 INFO L87 Difference]: Start difference. First operand 754 states and 863 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:09,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:11,282 WARN L539 Checker$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 04:49:13,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:15,331 WARN L539 Checker$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 04:49:17,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:19,340 WARN L539 Checker$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 04:49:21,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:23,357 WARN L539 Checker$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 04:49:25,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:27,494 WARN L539 Checker$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 04:49:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:28,367 INFO L93 Difference]: Finished difference Result 739 states and 834 transitions. [2024-11-09 04:49:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:28,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 04:49:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:28,370 INFO L225 Difference]: With dead ends: 739 [2024-11-09 04:49:28,370 INFO L226 Difference]: Without dead ends: 739 [2024-11-09 04:49:28,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:49:28,372 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 67 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 16 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:28,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1668 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 275 Invalid, 10 Unknown, 0 Unchecked, 21.2s Time] [2024-11-09 04:49:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-09 04:49:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 733. [2024-11-09 04:49:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 442 states have (on average 1.8597285067873304) internal successors, (822), 728 states have internal predecessors, (822), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:49:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 828 transitions. [2024-11-09 04:49:28,390 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 828 transitions. Word has length 15 [2024-11-09 04:49:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:28,391 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 828 transitions. [2024-11-09 04:49:28,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 828 transitions. [2024-11-09 04:49:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:49:28,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:28,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:28,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:49:28,393 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:49:28,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1289790689, now seen corresponding path program 1 times [2024-11-09 04:49:28,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905984713] [2024-11-09 04:49:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:28,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905984713] [2024-11-09 04:49:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905984713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:28,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224961623] [2024-11-09 04:49:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:28,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:28,484 INFO L87 Difference]: Start difference. First operand 733 states and 828 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:29,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:31,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:33,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:35,129 WARN L539 Checker$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 04:49:37,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:39,149 WARN L539 Checker$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 04:49:41,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:42,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:44,813 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 04:49:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:45,865 INFO L93 Difference]: Finished difference Result 754 states and 811 transitions. [2024-11-09 04:49:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:49:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:45,868 INFO L225 Difference]: With dead ends: 754 [2024-11-09 04:49:45,868 INFO L226 Difference]: Without dead ends: 754 [2024-11-09 04:49:45,868 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 04:49:45,869 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 670 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 28 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:45,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 873 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 837 Invalid, 6 Unknown, 0 Unchecked, 17.3s Time] [2024-11-09 04:49:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-09 04:49:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 710. [2024-11-09 04:49:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 442 states have (on average 1.8076923076923077) internal successors, (799), 705 states have internal predecessors, (799), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:49:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 805 transitions. [2024-11-09 04:49:45,886 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 805 transitions. Word has length 16 [2024-11-09 04:49:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:45,886 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 805 transitions. [2024-11-09 04:49:45,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 805 transitions. [2024-11-09 04:49:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:49:45,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:45,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:45,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 04:49:45,891 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:49:45,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1289790690, now seen corresponding path program 1 times [2024-11-09 04:49:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:45,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039868862] [2024-11-09 04:49:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:45,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:45,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039868862] [2024-11-09 04:49:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039868862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:45,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715182703] [2024-11-09 04:49:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:45,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:49:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:49:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:45,989 INFO L87 Difference]: Start difference. First operand 710 states and 805 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:49,524 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 04:49:51,533 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 04:49:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:52,547 INFO L93 Difference]: Finished difference Result 682 states and 775 transitions. [2024-11-09 04:49:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:49:52,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:49:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:52,550 INFO L225 Difference]: With dead ends: 682 [2024-11-09 04:49:52,550 INFO L226 Difference]: Without dead ends: 682 [2024-11-09 04:49:52,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:49:52,551 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 51 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:52,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1032 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 04:49:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-09 04:49:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-09 04:49:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 426 states have (on average 1.8051643192488263) internal successors, (769), 677 states have internal predecessors, (769), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:49:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 775 transitions. [2024-11-09 04:49:52,572 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 775 transitions. Word has length 16 [2024-11-09 04:49:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:52,572 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 775 transitions. [2024-11-09 04:49:52,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 775 transitions. [2024-11-09 04:49:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 04:49:52,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:52,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 04:49:52,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:49:52,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1335575306, now seen corresponding path program 1 times [2024-11-09 04:49:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319678622] [2024-11-09 04:49:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:52,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319678622] [2024-11-09 04:49:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319678622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:52,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:49:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515405881] [2024-11-09 04:49:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:52,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:52,719 INFO L87 Difference]: Start difference. First operand 682 states and 775 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:54,837 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 04:49:56,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:49:58,844 WARN L539 Checker$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 04:50:00,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:02,863 WARN L539 Checker$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 04:50:04,867 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 04:50:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:05,392 INFO L93 Difference]: Finished difference Result 671 states and 757 transitions. [2024-11-09 04:50:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:50:05,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 04:50:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:05,396 INFO L225 Difference]: With dead ends: 671 [2024-11-09 04:50:05,396 INFO L226 Difference]: Without dead ends: 671 [2024-11-09 04:50:05,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:50:05,397 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 38 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:05,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1513 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 242 Invalid, 6 Unknown, 0 Unchecked, 12.6s Time] [2024-11-09 04:50:05,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-09 04:50:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 668. [2024-11-09 04:50:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 419 states have (on average 1.7852028639618138) internal successors, (748), 663 states have internal predecessors, (748), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 754 transitions. [2024-11-09 04:50:05,414 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 754 transitions. Word has length 17 [2024-11-09 04:50:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:05,414 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 754 transitions. [2024-11-09 04:50:05,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 754 transitions. [2024-11-09 04:50:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 04:50:05,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:05,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:05,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 04:50:05,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr339REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:05,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1008225209, now seen corresponding path program 1 times [2024-11-09 04:50:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651450136] [2024-11-09 04:50:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:05,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651450136] [2024-11-09 04:50:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651450136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:05,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:05,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:50:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016047388] [2024-11-09 04:50:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:05,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:50:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:50:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:50:05,495 INFO L87 Difference]: Start difference. First operand 668 states and 754 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:06,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:08,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:10,583 WARN L539 Checker$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 04:50:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:10,736 INFO L93 Difference]: Finished difference Result 634 states and 716 transitions. [2024-11-09 04:50:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:50:10,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 04:50:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:10,740 INFO L225 Difference]: With dead ends: 634 [2024-11-09 04:50:10,740 INFO L226 Difference]: Without dead ends: 634 [2024-11-09 04:50:10,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:50:10,741 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 30 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:10,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 966 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2024-11-09 04:50:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-09 04:50:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2024-11-09 04:50:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 397 states have (on average 1.7884130982367759) internal successors, (710), 629 states have internal predecessors, (710), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 716 transitions. [2024-11-09 04:50:10,755 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 716 transitions. Word has length 18 [2024-11-09 04:50:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:10,755 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 716 transitions. [2024-11-09 04:50:10,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 716 transitions. [2024-11-09 04:50:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 04:50:10,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:10,757 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:10,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 04:50:10,757 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:10,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:10,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1020829944, now seen corresponding path program 1 times [2024-11-09 04:50:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:10,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904119107] [2024-11-09 04:50:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:10,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:10,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904119107] [2024-11-09 04:50:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904119107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:10,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:50:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386719970] [2024-11-09 04:50:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:10,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:50:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:50:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:50:10,935 INFO L87 Difference]: Start difference. First operand 634 states and 716 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:13,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:15,041 WARN L539 Checker$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 04:50:17,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:20,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:20,680 INFO L93 Difference]: Finished difference Result 766 states and 861 transitions. [2024-11-09 04:50:20,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:50:20,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 04:50:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:20,683 INFO L225 Difference]: With dead ends: 766 [2024-11-09 04:50:20,683 INFO L226 Difference]: Without dead ends: 766 [2024-11-09 04:50:20,683 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 04:50:20,684 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 361 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:20,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1008 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 738 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2024-11-09 04:50:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-09 04:50:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 630. [2024-11-09 04:50:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 397 states have (on average 1.778337531486146) internal successors, (706), 625 states have internal predecessors, (706), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 712 transitions. [2024-11-09 04:50:20,700 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 712 transitions. Word has length 31 [2024-11-09 04:50:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:20,700 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 712 transitions. [2024-11-09 04:50:20,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 712 transitions. [2024-11-09 04:50:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 04:50:20,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:20,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:20,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 04:50:20,703 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:20,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1327795383, now seen corresponding path program 1 times [2024-11-09 04:50:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265151517] [2024-11-09 04:50:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:20,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265151517] [2024-11-09 04:50:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265151517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:20,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:50:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940411208] [2024-11-09 04:50:20,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:20,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:50:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:50:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:50:20,891 INFO L87 Difference]: Start difference. First operand 630 states and 712 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:22,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:25,002 WARN L539 Checker$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 04:50:27,007 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 04:50:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:27,368 INFO L93 Difference]: Finished difference Result 630 states and 704 transitions. [2024-11-09 04:50:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:50:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 04:50:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:27,371 INFO L225 Difference]: With dead ends: 630 [2024-11-09 04:50:27,371 INFO L226 Difference]: Without dead ends: 630 [2024-11-09 04:50:27,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:50:27,372 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 21 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:27,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1417 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 04:50:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-11-09 04:50:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2024-11-09 04:50:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 397 states have (on average 1.7581863979848866) internal successors, (698), 625 states have internal predecessors, (698), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 704 transitions. [2024-11-09 04:50:27,387 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 704 transitions. Word has length 43 [2024-11-09 04:50:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:27,387 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 704 transitions. [2024-11-09 04:50:27,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 704 transitions. [2024-11-09 04:50:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 04:50:27,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:27,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:27,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 04:50:27,389 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:27,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2019105032, now seen corresponding path program 1 times [2024-11-09 04:50:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:27,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735308978] [2024-11-09 04:50:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:27,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735308978] [2024-11-09 04:50:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735308978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:27,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:50:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776342731] [2024-11-09 04:50:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:27,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:50:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:50:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:50:27,530 INFO L87 Difference]: Start difference. First operand 630 states and 704 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:29,569 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 04:50:30,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:32,753 WARN L539 Checker$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 04:50:34,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:36,772 WARN L539 Checker$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 04:50:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:36,926 INFO L93 Difference]: Finished difference Result 699 states and 733 transitions. [2024-11-09 04:50:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:50:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 04:50:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:36,929 INFO L225 Difference]: With dead ends: 699 [2024-11-09 04:50:36,929 INFO L226 Difference]: Without dead ends: 699 [2024-11-09 04:50:36,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:50:36,930 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 68 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:36,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 951 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 4 Unknown, 0 Unchecked, 9.4s Time] [2024-11-09 04:50:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-09 04:50:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 689. [2024-11-09 04:50:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 456 states have (on average 1.5855263157894737) internal successors, (723), 684 states have internal predecessors, (723), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 729 transitions. [2024-11-09 04:50:36,948 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 729 transitions. Word has length 47 [2024-11-09 04:50:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:36,948 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 729 transitions. [2024-11-09 04:50:36,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 729 transitions. [2024-11-09 04:50:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 04:50:36,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:36,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:36,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 04:50:36,950 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:36,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash -262803330, now seen corresponding path program 1 times [2024-11-09 04:50:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:36,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673013064] [2024-11-09 04:50:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:36,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:37,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673013064] [2024-11-09 04:50:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673013064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 04:50:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823479211] [2024-11-09 04:50:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:37,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:50:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:50:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:50:37,739 INFO L87 Difference]: Start difference. First operand 689 states and 729 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:39,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:41,875 WARN L539 Checker$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 04:50:43,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:45,880 WARN L539 Checker$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 04:50:47,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:49,887 WARN L539 Checker$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 04:50:52,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:50:54,139 WARN L539 Checker$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 04:50:57,108 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 04:50:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:57,293 INFO L93 Difference]: Finished difference Result 777 states and 825 transitions. [2024-11-09 04:50:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:50:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 04:50:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:57,297 INFO L225 Difference]: With dead ends: 777 [2024-11-09 04:50:57,297 INFO L226 Difference]: Without dead ends: 774 [2024-11-09 04:50:57,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:50:57,298 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 137 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:57,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2849 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 530 Invalid, 9 Unknown, 0 Unchecked, 19.5s Time] [2024-11-09 04:50:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-09 04:50:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 640. [2024-11-09 04:50:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 407 states have (on average 1.651105651105651) internal successors, (672), 635 states have internal predecessors, (672), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:50:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 678 transitions. [2024-11-09 04:50:57,317 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 678 transitions. Word has length 53 [2024-11-09 04:50:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:57,318 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 678 transitions. [2024-11-09 04:50:57,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 678 transitions. [2024-11-09 04:50:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:50:57,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:57,319 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:57,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 04:50:57,320 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:50:57,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1249538531, now seen corresponding path program 1 times [2024-11-09 04:50:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:57,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340856471] [2024-11-09 04:50:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:57,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:57,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340856471] [2024-11-09 04:50:57,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340856471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:57,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:57,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:50:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360822597] [2024-11-09 04:50:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:57,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:50:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:50:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:50:57,532 INFO L87 Difference]: Start difference. First operand 640 states and 678 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:50:59,624 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 04:51:01,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:03,649 WARN L539 Checker$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 04:51:05,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:07,762 WARN L539 Checker$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 04:51:09,765 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 04:51:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:09,873 INFO L93 Difference]: Finished difference Result 640 states and 670 transitions. [2024-11-09 04:51:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:51:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 04:51:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:09,878 INFO L225 Difference]: With dead ends: 640 [2024-11-09 04:51:09,878 INFO L226 Difference]: Without dead ends: 640 [2024-11-09 04:51:09,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:51:09,879 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 15 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:09,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1411 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 231 Invalid, 6 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 04:51:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-09 04:51:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-09 04:51:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 407 states have (on average 1.6314496314496314) internal successors, (664), 635 states have internal predecessors, (664), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:51:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 670 transitions. [2024-11-09 04:51:09,893 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 670 transitions. Word has length 54 [2024-11-09 04:51:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 670 transitions. [2024-11-09 04:51:09,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 670 transitions. [2024-11-09 04:51:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 04:51:09,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:09,895 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:09,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 04:51:09,895 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:51:09,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1096741378, now seen corresponding path program 1 times [2024-11-09 04:51:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:51:09,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625276768] [2024-11-09 04:51:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:51:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:10,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:51:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625276768] [2024-11-09 04:51:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625276768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:51:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194177100] [2024-11-09 04:51:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:10,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:51:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:51:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:51:10,333 INFO L87 Difference]: Start difference. First operand 640 states and 670 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:12,401 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 04:51:14,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:16,576 WARN L539 Checker$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 04:51:18,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:20,583 WARN L539 Checker$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 04:51:22,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:23,098 INFO L93 Difference]: Finished difference Result 639 states and 669 transitions. [2024-11-09 04:51:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:51:23,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-09 04:51:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:23,102 INFO L225 Difference]: With dead ends: 639 [2024-11-09 04:51:23,102 INFO L226 Difference]: Without dead ends: 639 [2024-11-09 04:51:23,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:23,103 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 2 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:23,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1306 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 921 Invalid, 5 Unknown, 0 Unchecked, 12.7s Time] [2024-11-09 04:51:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-09 04:51:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2024-11-09 04:51:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 407 states have (on average 1.628992628992629) internal successors, (663), 634 states have internal predecessors, (663), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:51:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 669 transitions. [2024-11-09 04:51:23,116 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 669 transitions. Word has length 58 [2024-11-09 04:51:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:23,117 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 669 transitions. [2024-11-09 04:51:23,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 669 transitions. [2024-11-09 04:51:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 04:51:23,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:23,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:23,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 04:51:23,119 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:51:23,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1096741379, now seen corresponding path program 1 times [2024-11-09 04:51:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:51:23,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613464497] [2024-11-09 04:51:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:51:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:23,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:51:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613464497] [2024-11-09 04:51:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613464497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:23,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:23,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:51:23,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114599293] [2024-11-09 04:51:23,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:23,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:51:23,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:23,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:51:23,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:51:23,951 INFO L87 Difference]: Start difference. First operand 639 states and 669 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:26,026 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 04:51:28,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:30,034 WARN L539 Checker$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 04:51:32,038 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 04:51:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:33,701 INFO L93 Difference]: Finished difference Result 638 states and 668 transitions. [2024-11-09 04:51:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:51:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-09 04:51:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:33,704 INFO L225 Difference]: With dead ends: 638 [2024-11-09 04:51:33,704 INFO L226 Difference]: Without dead ends: 638 [2024-11-09 04:51:33,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:33,705 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:33,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1265 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 4 Unknown, 0 Unchecked, 9.7s Time] [2024-11-09 04:51:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-09 04:51:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2024-11-09 04:51:33,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 406 states have (on average 1.6305418719211822) internal successors, (662), 633 states have internal predecessors, (662), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:51:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 668 transitions. [2024-11-09 04:51:33,719 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 668 transitions. Word has length 58 [2024-11-09 04:51:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:33,720 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 668 transitions. [2024-11-09 04:51:33,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 668 transitions. [2024-11-09 04:51:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 04:51:33,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:33,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:33,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 04:51:33,722 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:51:33,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -122344952, now seen corresponding path program 1 times [2024-11-09 04:51:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:51:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627201465] [2024-11-09 04:51:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:51:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:34,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:51:34,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627201465] [2024-11-09 04:51:34,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627201465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:34,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:51:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414394010] [2024-11-09 04:51:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:34,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:51:34,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:51:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:51:34,195 INFO L87 Difference]: Start difference. First operand 638 states and 668 transitions. Second operand has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:51:36,270 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 04:51:38,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:40,295 WARN L539 Checker$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 04:51:42,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:44,314 WARN L539 Checker$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 04:51:46,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:48,694 WARN L539 Checker$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 04:51:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:49,819 INFO L93 Difference]: Finished difference Result 648 states and 681 transitions. [2024-11-09 04:51:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:51:49,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-09 04:51:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:49,824 INFO L225 Difference]: With dead ends: 648 [2024-11-09 04:51:49,824 INFO L226 Difference]: Without dead ends: 648 [2024-11-09 04:51:49,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:51:49,825 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 5 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:49,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1796 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 991 Invalid, 7 Unknown, 0 Unchecked, 15.6s Time] [2024-11-09 04:51:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-09 04:51:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 643. [2024-11-09 04:51:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 410 states have (on average 1.6292682926829267) internal successors, (668), 637 states have internal predecessors, (668), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:51:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 677 transitions. [2024-11-09 04:51:49,842 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 677 transitions. Word has length 64 [2024-11-09 04:51:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:49,842 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 677 transitions. [2024-11-09 04:51:49,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:51:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 677 transitions. [2024-11-09 04:51:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 04:51:49,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:49,844 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:49,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 04:51:49,844 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:51:49,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -122344951, now seen corresponding path program 1 times [2024-11-09 04:51:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:51:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885322496] [2024-11-09 04:51:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:51:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:50,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:51:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885322496] [2024-11-09 04:51:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885322496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:50,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:51:50,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343644452] [2024-11-09 04:51:50,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:50,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:51:50,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:51:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:50,748 INFO L87 Difference]: Start difference. First operand 643 states and 677 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:51:52,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:54,833 WARN L539 Checker$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 04:51:56,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:51:58,853 WARN L539 Checker$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 04:52:00,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:52:03,236 WARN L539 Checker$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 04:52:05,094 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 04:52:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:05,724 INFO L93 Difference]: Finished difference Result 643 states and 676 transitions. [2024-11-09 04:52:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:52:05,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-09 04:52:05,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:05,731 INFO L225 Difference]: With dead ends: 643 [2024-11-09 04:52:05,731 INFO L226 Difference]: Without dead ends: 643 [2024-11-09 04:52:05,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:52:05,732 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:05,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1663 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1117 Invalid, 6 Unknown, 0 Unchecked, 14.9s Time] [2024-11-09 04:52:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2024-11-09 04:52:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2024-11-09 04:52:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 410 states have (on average 1.6268292682926828) internal successors, (667), 637 states have internal predecessors, (667), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:52:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 676 transitions. [2024-11-09 04:52:05,746 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 676 transitions. Word has length 64 [2024-11-09 04:52:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:05,746 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 676 transitions. [2024-11-09 04:52:05,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:52:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 676 transitions. [2024-11-09 04:52:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 04:52:05,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:05,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:05,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 04:52:05,748 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:52:05,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1646320683, now seen corresponding path program 1 times [2024-11-09 04:52:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:52:05,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258645469] [2024-11-09 04:52:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:05,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:52:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:06,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:52:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258645469] [2024-11-09 04:52:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258645469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470482305] [2024-11-09 04:52:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:06,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:06,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:52:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:07,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:52:07,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:07,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 04:52:07,242 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 04:52:07,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 04:52:07,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:52:07,352 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 04:52:07,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 04:52:07,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-09 04:52:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:07,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:07,526 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-09 04:52:07,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 04:52:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470482305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [445777113] [2024-11-09 04:52:07,606 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2024-11-09 04:52:07,606 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:52:07,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:52:07,618 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:52:07,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:52:15,456 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 126 for LOIs [2024-11-09 04:52:15,802 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:55:26,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33372#(and (<= 1 |#StackHeapBarrier|) (not (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~user~0#1.base|) 8)) 1)) (<= 2 |ULTIMATE.start_main_~#i~0#1.base|) (= |ULTIMATE.start_main_~user~0#1.offset| 0) (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr226_18| Int)) (and (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr226_18| 4294967296)) (<= 1 |v_#Ultimate.C_memset_#t~loopctr226_18|))) (exists ((|v_#memory_int_418| (Array Int (Array Int Int))) (|v_#memory_int_423| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_3| (Array Int (Array Int Int))) (|v_#memory_int_422| (Array Int (Array Int Int))) (|v_#memory_int_420| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_418| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_418| |ULTIMATE.start_main_~user~0#1.base|) 36 |ULTIMATE.start_main_~_ha_hashv~0#1|) 28 (select (select |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base|) 28))) |v_#memory_int_420|) (= (store |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base|) 8 (select (select |v_old(#memory_int)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8))) |v_old(#memory_int)_AFTER_CALL_3|) (= (store |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base|) 12 (select (select |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base|) 12))) |v_#memory_int_423|) (= (store |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base|) 32 4) 16 (select (select |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base|) 16))) |v_#memory_int_422|))) (exists ((|v_old(#memory_$Pointer$.base)_AFTER_CALL_3| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_309| (Array Int (Array Int Int))) (|v_#valid_631| (Array Int Int)) (|v_#length_613| (Array Int Int)) (|v_#memory_$Pointer$.base_312| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_310| (Array Int (Array Int Int)))) (and (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8) 0)) (= (store |v_#valid_631| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#valid|) (<= 40 (select |v_#length_613| |ULTIMATE.start_main_~user~0#1.base|)) (= |v_#memory_$Pointer$.base_310| (store |v_#memory_$Pointer$.base_309| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_309| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base|) 36)))) (= (select |v_#valid_631| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8)) 0) (= (select |v_#valid_631| |ULTIMATE.start_main_~user~0#1.base|) 1) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#StackHeapBarrier|) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| (store |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base|) 16 0) 12 0) 8 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8)))) (= (store |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base|) 28 |ULTIMATE.start_main_~user~0#1.base|) 32 (select (select |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base|) 32))) |v_#memory_$Pointer$.base_312|) (= (store |v_#length_613| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_3| |ULTIMATE.start_main_~user~0#1.base|) 8) 44) |#length|))) (exists ((|v_#memory_$Pointer$.offset_305| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_306| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_308| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_305| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_305| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.offset_306|) (= |v_#memory_$Pointer$.offset_308| (store |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base|) 28 0) 32 (select (select |v_#memory_$Pointer$.offset_308| |ULTIMATE.start_main_~user~0#1.base|) 32))))))) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr226_18| Int)) (and (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr226_18| 4294967296)) (<= 1 |v_#Ultimate.C_memset_#t~loopctr226_18|))) (exists ((|v_#memory_int_418| (Array Int (Array Int Int))) (|v_#memory_int_423| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_2| (Array Int (Array Int Int))) (|v_#memory_int_422| (Array Int (Array Int Int))) (|v_#memory_int_420| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_418| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_418| |ULTIMATE.start_main_~user~0#1.base|) 36 |ULTIMATE.start_main_~_ha_hashv~0#1|) 28 (select (select |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base|) 28))) |v_#memory_int_420|) (= (store |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base|) 12 (select (select |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base|) 12))) |v_#memory_int_423|) (= (store |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_420| |ULTIMATE.start_main_~user~0#1.base|) 32 4) 16 (select (select |v_#memory_int_422| |ULTIMATE.start_main_~user~0#1.base|) 16))) |v_#memory_int_422|) (= |v_old(#memory_int)_AFTER_CALL_2| (store |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_423| |ULTIMATE.start_main_~user~0#1.base|) 8 (select (select |v_old(#memory_int)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8)))))) (exists ((|v_#memory_$Pointer$.offset_305| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_306| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_308| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_305| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_305| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.offset_306|) (= |v_#memory_$Pointer$.offset_308| (store |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.offset_306| |ULTIMATE.start_main_~user~0#1.base|) 28 0) 32 (select (select |v_#memory_$Pointer$.offset_308| |ULTIMATE.start_main_~user~0#1.base|) 32)))))) (exists ((|v_#memory_$Pointer$.base_309| (Array Int (Array Int Int))) (|v_#valid_631| (Array Int Int)) (|v_#length_613| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_2| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_312| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_310| (Array Int (Array Int Int)))) (and (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| (store |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base|) 16 0) 12 0) 8 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8)))) (<= 40 (select |v_#length_613| |ULTIMATE.start_main_~user~0#1.base|)) (= |v_#memory_$Pointer$.base_310| (store |v_#memory_$Pointer$.base_309| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_309| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base|) 36)))) (= (store |v_#length_613| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8) 44) |#length|) (= (select |v_#valid_631| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8)) 0) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#StackHeapBarrier|) (= (store |v_#valid_631| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#valid|) (= (select |v_#valid_631| |ULTIMATE.start_main_~user~0#1.base|) 1) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_2| |ULTIMATE.start_main_~user~0#1.base|) 8) 0)) (= (store |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.base_310| |ULTIMATE.start_main_~user~0#1.base|) 28 |ULTIMATE.start_main_~user~0#1.base|) 32 (select (select |v_#memory_$Pointer$.base_312| |ULTIMATE.start_main_~user~0#1.base|) 32))) |v_#memory_$Pointer$.base_312|))))) (= |ULTIMATE.start_main_#t~mem56#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~user~0#1.base|) 8)) (= |ULTIMATE.start_main_~#i~0#1.offset| 0))' at error location [2024-11-09 04:55:26,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:55:26,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:55:26,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2024-11-09 04:55:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054417162] [2024-11-09 04:55:26,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:55:26,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:55:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:55:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:55:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2307, Unknown=95, NotChecked=0, Total=2652 [2024-11-09 04:55:26,309 INFO L87 Difference]: Start difference. First operand 643 states and 676 transitions. Second operand has 14 states, 12 states have (on average 8.416666666666666) internal successors, (101), 13 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:55:28,605 WARN L539 Checker$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 04:55:30,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:32,617 WARN L539 Checker$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 04:55:34,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:36,630 WARN L539 Checker$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 04:55:38,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:40,640 WARN L539 Checker$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 04:55:42,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:44,652 WARN L539 Checker$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 04:55:46,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:48,663 WARN L539 Checker$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 04:55:50,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:55,885 WARN L539 Checker$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 04:55:57,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:55:59,915 WARN L539 Checker$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 04:56:01,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:03,926 WARN L539 Checker$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 04:56:05,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:07,932 WARN L539 Checker$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 04:56:09,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:11,945 WARN L539 Checker$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 04:56:13,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:56:15,958 WARN L539 Checker$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 04:56:17,961 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 04:56:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:22,109 INFO L93 Difference]: Finished difference Result 642 states and 675 transitions. [2024-11-09 04:56:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:56:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.416666666666666) internal successors, (101), 13 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2024-11-09 04:56:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:22,113 INFO L225 Difference]: With dead ends: 642 [2024-11-09 04:56:22,113 INFO L226 Difference]: Without dead ends: 642 [2024-11-09 04:56:22,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 191.4s TimeCoverageRelationStatistics Valid=312, Invalid=3011, Unknown=99, NotChecked=0, Total=3422 [2024-11-09 04:56:22,115 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 492 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 13 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:22,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 2266 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2750 Invalid, 24 Unknown, 0 Unchecked, 54.9s Time] [2024-11-09 04:56:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-09 04:56:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2024-11-09 04:56:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 410 states have (on average 1.6243902439024391) internal successors, (666), 636 states have internal predecessors, (666), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 04:56:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 675 transitions. [2024-11-09 04:56:22,134 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 675 transitions. Word has length 65 [2024-11-09 04:56:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:22,134 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 675 transitions. [2024-11-09 04:56:22,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.416666666666666) internal successors, (101), 13 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:56:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 675 transitions. [2024-11-09 04:56:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 04:56:22,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:22,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:22,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:22,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 04:56:22,337 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 04:56:22,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1646320684, now seen corresponding path program 1 times [2024-11-09 04:56:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:56:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416069249] [2024-11-09 04:56:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:56:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:23,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:56:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416069249] [2024-11-09 04:56:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416069249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:56:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995911030] [2024-11-09 04:56:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:23,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:23,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:23,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:56:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:24,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:56:24,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:24,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 04:56:24,712 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 04:56:24,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 04:56:24,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:56:24,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:56:25,442 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 04:56:25,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-09 04:56:25,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2024-11-09 04:56:25,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2024-11-09 04:56:25,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2024-11-09 04:56:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:25,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:26,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:26,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2024-11-09 04:56:26,237 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_805 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_805) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (+ 25 |c_ULTIMATE.start_main_#t~mem54#1.offset|))) (forall ((v_ArrVal_806 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem54#1.base|)) (forall ((v_prenex_1 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_prenex_1) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 04:56:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995911030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:56:26,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [639307030] [2024-11-09 04:56:26,246 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2024-11-09 04:56:26,247 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:56:26,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:56:26,248 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:56:26,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:56:33,277 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 128 for LOIs [2024-11-09 04:56:34,466 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:48,578 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34933#(and (<= 1 |#StackHeapBarrier|) (or (< (+ 16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~user~0#1.base|) 8)) 0) (< (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~user~0#1.base|) 8)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~user~0#1.base|) 8) 20))) (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr226_30| Int)) (and (<= 1 |v_#Ultimate.C_memset_#t~loopctr226_30|) (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr226_30| 4294967296)))) (exists ((|v_#memory_$Pointer$.offset_328| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_329| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_331| (Array Int (Array Int Int)))) (and (= |v_#memory_$Pointer$.offset_331| (store |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base|) 28 0) 32 (select (select |v_#memory_$Pointer$.offset_331| |ULTIMATE.start_main_~user~0#1.base|) 32)))) (= (store |v_#memory_$Pointer$.offset_328| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_328| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.offset_329|))) (exists ((|v_#length_618| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_6| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_335| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_333| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_332| (Array Int (Array Int Int))) (|v_#valid_636| (Array Int Int))) (and (= (select |v_#valid_636| |ULTIMATE.start_main_~user~0#1.base|) 1) (= |#length| (store |v_#length_618| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8) 44)) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| (store |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base|) 16 0) 12 0) 8 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8)))) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#StackHeapBarrier|) (<= 40 (select |v_#length_618| |ULTIMATE.start_main_~user~0#1.base|)) (= (store |v_#valid_636| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#valid|) (= (store |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base|) 28 |ULTIMATE.start_main_~user~0#1.base|) 32 (select (select |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base|) 32))) |v_#memory_$Pointer$.base_335|) (= (store |v_#memory_$Pointer$.base_332| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_332| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.base_333|) (= (select |v_#valid_636| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8)) 0) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8) 0)))) (exists ((|v_#memory_int_437| (Array Int (Array Int Int))) (|v_#memory_int_439| (Array Int (Array Int Int))) (|v_#memory_int_441| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_6| (Array Int (Array Int Int))) (|v_#memory_int_442| (Array Int (Array Int Int)))) (and (= |v_old(#memory_int)_AFTER_CALL_6| (store |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base|) 8 (select (select |v_old(#memory_int)_AFTER_CALL_6| |ULTIMATE.start_main_~user~0#1.base|) 8)))) (= (store |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base|) 32 4) 16 (select (select |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base|) 16))) |v_#memory_int_441|) (= |v_#memory_int_439| (store |v_#memory_int_437| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_437| |ULTIMATE.start_main_~user~0#1.base|) 36 |ULTIMATE.start_main_~_ha_hashv~0#1|) 28 (select (select |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base|) 28)))) (= (store |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base|) 12 (select (select |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base|) 12))) |v_#memory_int_442|)))) (and (exists ((|v_#memory_int_437| (Array Int (Array Int Int))) (|v_#memory_int_439| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_5| (Array Int (Array Int Int))) (|v_#memory_int_441| (Array Int (Array Int Int))) (|v_#memory_int_442| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base|) 32 4) 16 (select (select |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base|) 16))) |v_#memory_int_441|) (= (store |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base|) 8 (select (select |v_old(#memory_int)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8))) |v_old(#memory_int)_AFTER_CALL_5|) (= |v_#memory_int_439| (store |v_#memory_int_437| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_int_437| |ULTIMATE.start_main_~user~0#1.base|) 36 |ULTIMATE.start_main_~_ha_hashv~0#1|) 28 (select (select |v_#memory_int_439| |ULTIMATE.start_main_~user~0#1.base|) 28)))) (= (store |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_int_441| |ULTIMATE.start_main_~user~0#1.base|) 12 (select (select |v_#memory_int_442| |ULTIMATE.start_main_~user~0#1.base|) 12))) |v_#memory_int_442|))) (exists ((|v_old(#memory_$Pointer$.base)_AFTER_CALL_5| (Array Int (Array Int Int))) (|v_#length_618| (Array Int Int)) (|v_#memory_$Pointer$.base_335| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_333| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_332| (Array Int (Array Int Int))) (|v_#valid_636| (Array Int Int))) (and (= (select |v_#valid_636| |ULTIMATE.start_main_~user~0#1.base|) 1) (= (select |v_#valid_636| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8)) 0) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8) 0)) (<= 40 (select |v_#length_618| |ULTIMATE.start_main_~user~0#1.base|)) (<= (+ (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#StackHeapBarrier|) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| (store |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base| (store (store (store (select |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base|) 16 0) 12 0) 8 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8)))) (= (store |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base|) 28 |ULTIMATE.start_main_~user~0#1.base|) 32 (select (select |v_#memory_$Pointer$.base_335| |ULTIMATE.start_main_~user~0#1.base|) 32))) |v_#memory_$Pointer$.base_335|) (= |#length| (store |v_#length_618| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8) 44)) (= (store |v_#memory_$Pointer$.base_332| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.base_332| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.base_333| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.base_333|) (= (store |v_#valid_636| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_5| |ULTIMATE.start_main_~user~0#1.base|) 8) 1) |#valid|))) (exists ((|v_#memory_$Pointer$.offset_328| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_329| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_331| (Array Int (Array Int Int)))) (and (= |v_#memory_$Pointer$.offset_331| (store |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base| (store (store (select |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base|) 28 0) 32 (select (select |v_#memory_$Pointer$.offset_331| |ULTIMATE.start_main_~user~0#1.base|) 32)))) (= (store |v_#memory_$Pointer$.offset_328| |ULTIMATE.start_main_~user~0#1.base| (store (select |v_#memory_$Pointer$.offset_328| |ULTIMATE.start_main_~user~0#1.base|) 36 (select (select |v_#memory_$Pointer$.offset_329| |ULTIMATE.start_main_~user~0#1.base|) 36))) |v_#memory_$Pointer$.offset_329|))) (exists ((|v_#Ultimate.C_memset_#t~loopctr226_30| Int)) (and (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr226_30| 4294967296)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr226_30|))))) (<= 2 |ULTIMATE.start_main_~#i~0#1.base|) (= |ULTIMATE.start_main_~user~0#1.offset| 0) (= |ULTIMATE.start_main_~#i~0#1.offset| 0))' at error location [2024-11-09 04:59:48,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:48,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:59:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-09 04:59:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406798675] [2024-11-09 04:59:48,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:48,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:59:48,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:59:48,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2919, Unknown=107, NotChecked=112, Total=3422 [2024-11-09 04:59:48,582 INFO L87 Difference]: Start difference. First operand 642 states and 675 transitions. Second operand has 19 states, 16 states have (on average 6.875) internal successors, (110), 19 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 04:59:51,027 WARN L539 Checker$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 04:59:53,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:55,035 WARN L539 Checker$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 04:59:57,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 04:59:59,042 WARN L539 Checker$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 05:00:01,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:03,048 WARN L539 Checker$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 05:00:05,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:07,060 WARN L539 Checker$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 05:00:09,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:11,066 WARN L539 Checker$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 05:00:13,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:15,078 WARN L539 Checker$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 05:00:17,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:19,087 WARN L539 Checker$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 05:00:21,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:23,094 WARN L539 Checker$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 05:00:28,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:30,991 WARN L539 Checker$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 05:00:32,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:34,999 WARN L539 Checker$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 05:00:37,003 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 05:00:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:43,866 INFO L93 Difference]: Finished difference Result 641 states and 674 transitions. [2024-11-09 05:00:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:00:43,867 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.875) internal successors, (110), 19 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2024-11-09 05:00:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:43,870 INFO L225 Difference]: With dead ends: 641 [2024-11-09 05:00:43,870 INFO L226 Difference]: Without dead ends: 641 [2024-11-09 05:00:43,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 195.9s TimeCoverageRelationStatistics Valid=325, Invalid=3353, Unknown=108, NotChecked=120, Total=3906 [2024-11-09 05:00:43,873 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 490 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 19 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:43,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2340 Invalid, 3795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3754 Invalid, 22 Unknown, 0 Unchecked, 54.6s Time] [2024-11-09 05:00:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-09 05:00:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 636. [2024-11-09 05:00:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 406 states have (on average 1.625615763546798) internal successors, (660), 631 states have internal predecessors, (660), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:00:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 666 transitions. [2024-11-09 05:00:43,890 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 666 transitions. Word has length 65 [2024-11-09 05:00:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:43,890 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 666 transitions. [2024-11-09 05:00:43,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.875) internal successors, (110), 19 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:00:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 666 transitions. [2024-11-09 05:00:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 05:00:43,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:43,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:43,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:00:44,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c149b4b0-427e-4671-b67f-f2464e2c43c4/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:44,093 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 05:00:44,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1607934952, now seen corresponding path program 1 times [2024-11-09 05:00:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421409518] [2024-11-09 05:00:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:44,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:00:45,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421409518] [2024-11-09 05:00:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421409518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:45,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:00:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 05:00:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102919050] [2024-11-09 05:00:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:45,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:00:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:00:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:00:45,517 INFO L87 Difference]: Start difference. First operand 636 states and 666 transitions. Second operand has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:00:47,857 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 05:00:49,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:55,161 WARN L539 Checker$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 05:00:57,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:00:59,168 WARN L539 Checker$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 05:01:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:03,791 INFO L93 Difference]: Finished difference Result 644 states and 677 transitions. [2024-11-09 05:01:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:01:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2024-11-09 05:01:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:03,794 INFO L225 Difference]: With dead ends: 644 [2024-11-09 05:01:03,794 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 05:01:03,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:01:03,795 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 504 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:03,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2011 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2470 Invalid, 5 Unknown, 0 Unchecked, 17.9s Time] [2024-11-09 05:01:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 05:01:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 643. [2024-11-09 05:01:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 412 states have (on average 1.6213592233009708) internal successors, (668), 637 states have internal predecessors, (668), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:01:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 677 transitions. [2024-11-09 05:01:03,809 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 677 transitions. Word has length 66 [2024-11-09 05:01:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:03,809 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 677 transitions. [2024-11-09 05:01:03,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:01:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 677 transitions. [2024-11-09 05:01:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 05:01:03,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:03,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:03,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 05:01:03,812 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-09 05:01:03,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1607934951, now seen corresponding path program 1 times [2024-11-09 05:01:03,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:03,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747801470] [2024-11-09 05:01:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:05,230 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 05:01:05,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747801470] [2024-11-09 05:01:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747801470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:05,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:05,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:01:05,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602925377] [2024-11-09 05:01:05,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:05,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:01:05,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:01:05,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:01:05,234 INFO L87 Difference]: Start difference. First operand 643 states and 677 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:01:07,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:01:09,522 WARN L539 Checker$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 05:01:11,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:01:13,529 WARN L539 Checker$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 05:01:15,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:01:17,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []