./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --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 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:05:06,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:05:06,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:05:06,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:05:06,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:05:06,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:05:06,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:05:06,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:05:06,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:05:06,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:05:06,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:05:06,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:05:06,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:05:06,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:05:06,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:05:06,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:05:06,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:05:06,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:05:06,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:05:06,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:05:06,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:05:06,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:05:06,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:05:06,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:05:06,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:05:06,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:05:06,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:05:06,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:05:06,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:05:06,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:05:06,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:05:06,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:05:06,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:05:06,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:05:06,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:05:06,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:05:06,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:05:06,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:05:06,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:05:06,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:05:06,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:05:06,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 16:05:06,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:05:06,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:05:06,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:05:06,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:05:06,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:05:06,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:05:06,702 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:05:06,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:05:06,703 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:05:06,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:05:06,704 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:05:06,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:05:06,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:05:06,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:05:06,705 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:05:06,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:05:06,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:05:06,705 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:05:06,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:05:06,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:05:06,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:05:06,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:05:06,707 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:05:06,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:05:06,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:05:06,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:05:06,709 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:05:06,709 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:05:06,709 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:05:06,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:05:06,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:05:06,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:05:06,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:05:06,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:05:06,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:05:06,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:05:06,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:05:06,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:05:06,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:05:06,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:05:06,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:05:06,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:05:06,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 [2022-11-16 16:05:07,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:05:07,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:05:07,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:05:07,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:05:07,086 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:05:07,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-16 16:05:07,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/data/4168bee82/41cd587820fd4da6a35c2df1d5c6ca98/FLAG939e108bd [2022-11-16 16:05:07,943 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:05:07,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-16 16:05:07,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/data/4168bee82/41cd587820fd4da6a35c2df1d5c6ca98/FLAG939e108bd [2022-11-16 16:05:08,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/data/4168bee82/41cd587820fd4da6a35c2df1d5c6ca98 [2022-11-16 16:05:08,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:05:08,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:05:08,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:05:08,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:05:08,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:05:08,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b48bde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08, skipping insertion in model container [2022-11-16 16:05:08,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:05:08,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:05:08,736 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-16 16:05:08,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:05:08,750 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:05:08,806 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-16 16:05:08,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:05:08,847 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:05:08,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08 WrapperNode [2022-11-16 16:05:08,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:05:08,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:05:08,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:05:08,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:05:08,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,903 INFO L138 Inliner]: procedures = 126, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2022-11-16 16:05:08,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:05:08,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:05:08,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:05:08,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:05:08,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:05:08,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:05:08,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:05:08,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:05:08,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (1/1) ... [2022-11-16 16:05:08,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:05:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:09,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:05:09,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:05:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-16 16:05:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-16 16:05:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:05:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:05:09,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:05:09,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:05:09,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:05:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:05:09,288 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:05:09,291 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:05:09,365 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-16 16:05:09,839 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:05:09,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:05:09,872 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 16:05:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:05:09 BoogieIcfgContainer [2022-11-16 16:05:09,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:05:09,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:05:09,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:05:09,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:05:09,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:05:08" (1/3) ... [2022-11-16 16:05:09,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7561fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:09, skipping insertion in model container [2022-11-16 16:05:09,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:05:08" (2/3) ... [2022-11-16 16:05:09,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7561fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:05:09, skipping insertion in model container [2022-11-16 16:05:09,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:05:09" (3/3) ... [2022-11-16 16:05:09,894 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all_reverse.i [2022-11-16 16:05:09,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:05:09,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-16 16:05:10,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:05:10,022 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3826dfe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:05:10,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 16:05:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:05:10,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:10,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:05:10,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash 5050762, now seen corresponding path program 1 times [2022-11-16 16:05:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:10,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277621722] [2022-11-16 16:05:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:10,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:10,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277621722] [2022-11-16 16:05:10,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277621722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:10,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:10,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:05:10,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901153572] [2022-11-16 16:05:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:10,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:10,458 INFO L87 Difference]: Start difference. First operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:10,639 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-11-16 16:05:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 16:05:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:10,659 INFO L225 Difference]: With dead ends: 109 [2022-11-16 16:05:10,659 INFO L226 Difference]: Without dead ends: 105 [2022-11-16 16:05:10,661 INFO L412 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 [2022-11-16 16:05:10,669 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:10,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 102 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-16 16:05:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2022-11-16 16:05:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 2.129032258064516) internal successors, (66), 61 states have internal predecessors, (66), 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) [2022-11-16 16:05:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-11-16 16:05:10,714 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 4 [2022-11-16 16:05:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:10,715 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-11-16 16:05:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-11-16 16:05:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:05:10,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:10,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:05:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:05:10,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 5050763, now seen corresponding path program 1 times [2022-11-16 16:05:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:10,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979472001] [2022-11-16 16:05:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:10,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979472001] [2022-11-16 16:05:10,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979472001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:10,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:10,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:05:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810809427] [2022-11-16 16:05:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:10,913 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:11,075 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-16 16:05:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 16:05:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:11,077 INFO L225 Difference]: With dead ends: 108 [2022-11-16 16:05:11,077 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 16:05:11,078 INFO L412 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 [2022-11-16 16:05:11,080 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:11,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 16:05:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 59. [2022-11-16 16:05:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 2.032258064516129) internal successors, (63), 58 states have internal predecessors, (63), 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) [2022-11-16 16:05:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-16 16:05:11,089 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 4 [2022-11-16 16:05:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:11,089 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-16 16:05:11,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-16 16:05:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 16:05:11,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:11,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 16:05:11,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:05:11,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 5174857, now seen corresponding path program 1 times [2022-11-16 16:05:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990348715] [2022-11-16 16:05:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:11,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:11,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990348715] [2022-11-16 16:05:11,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990348715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:11,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:11,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:05:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101934416] [2022-11-16 16:05:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:11,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:11,149 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:11,176 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-11-16 16:05:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:11,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 16:05:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:11,177 INFO L225 Difference]: With dead ends: 69 [2022-11-16 16:05:11,177 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 16:05:11,178 INFO L412 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 [2022-11-16 16:05:11,179 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:11,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 16:05:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-11-16 16:05:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 2.0) internal successors, (64), 59 states have internal predecessors, (64), 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) [2022-11-16 16:05:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-11-16 16:05:11,187 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 4 [2022-11-16 16:05:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:11,188 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-11-16 16:05:11,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-11-16 16:05:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 16:05:11,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:11,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:05:11,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 150200334, now seen corresponding path program 1 times [2022-11-16 16:05:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351247438] [2022-11-16 16:05:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:11,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:11,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351247438] [2022-11-16 16:05:11,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351247438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:11,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:11,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:05:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828492943] [2022-11-16 16:05:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:11,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:05:11,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:05:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:05:11,312 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:11,368 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-11-16 16:05:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:05:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 16:05:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:11,372 INFO L225 Difference]: With dead ends: 66 [2022-11-16 16:05:11,372 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 16:05:11,372 INFO L412 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 [2022-11-16 16:05:11,374 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:11,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 16:05:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-11-16 16:05:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.864864864864865) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-11-16 16:05:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-11-16 16:05:11,381 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2022-11-16 16:05:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:11,381 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-11-16 16:05:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-11-16 16:05:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:05:11,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:11,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:05:11,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -732865500, now seen corresponding path program 1 times [2022-11-16 16:05:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:11,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612350063] [2022-11-16 16:05:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:11,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:11,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612350063] [2022-11-16 16:05:11,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612350063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590554104] [2022-11-16 16:05:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:11,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:11,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:11,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:11,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:05:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:11,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:05:11,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:11,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:11,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590554104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:11,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1762767417] [2022-11-16 16:05:11,849 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 16:05:11,850 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:11,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:11,863 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:11,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:11,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:11,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:11,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:05:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 16:05:12,147 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:12,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:05:12,216 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:12,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:12,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:12,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:12,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:12,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:12,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-16 16:05:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:12,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:12,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:12,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,170 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-16 16:05:13,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-16 16:05:13,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,249 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-16 16:05:13,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-16 16:05:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:13,309 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:13,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-16 16:05:13,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-16 16:05:13,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:13,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:13,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:13,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:14,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,082 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-16 16:05:14,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-16 16:05:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:14,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:14,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:14,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,135 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:14,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-16 16:05:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:14,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:14,187 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-16 16:05:14,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-16 16:05:14,703 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-16 16:05:14,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 313 treesize of output 320 [2022-11-16 16:05:15,193 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-16 16:05:15,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 393 treesize of output 384 [2022-11-16 16:05:15,248 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-16 16:05:15,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 393 treesize of output 384 [2022-11-16 16:05:15,311 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-16 16:05:15,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 386 [2022-11-16 16:05:15,421 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:19,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1762767417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:19,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:19,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-16 16:05:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898868374] [2022-11-16 16:05:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:05:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:19,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:05:19,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:05:19,625 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:20,730 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-16 16:05:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:05:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 16:05:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:20,731 INFO L225 Difference]: With dead ends: 76 [2022-11-16 16:05:20,732 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 16:05:20,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:05:20,733 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:20,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:05:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 16:05:20,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-11-16 16:05:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.75) internal successors, (77), 71 states have internal predecessors, (77), 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) [2022-11-16 16:05:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-11-16 16:05:20,757 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 11 [2022-11-16 16:05:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:20,757 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-11-16 16:05:20,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-11-16 16:05:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:05:20,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:20,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 16:05:20,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:20,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:20,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1488330647, now seen corresponding path program 1 times [2022-11-16 16:05:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:20,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139649563] [2022-11-16 16:05:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:21,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:21,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139649563] [2022-11-16 16:05:21,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139649563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077331814] [2022-11-16 16:05:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:21,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:21,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:05:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 16:05:21,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:21,401 INFO L350 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 [2022-11-16 16:05:21,438 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 16:05:21,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 16:05:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:21,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:21,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077331814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:21,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1814983847] [2022-11-16 16:05:21,573 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-16 16:05:21,573 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:21,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:21,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:21,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:05:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 16:05:21,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:05:21,706 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:21,724 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:21,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:21,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:21,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:21,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:21,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-16 16:05:21,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:21,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:22,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:22,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:22,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:22,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:22,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:22,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,301 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:22,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,340 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:22,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-16 16:05:22,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,383 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:22,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:22,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-16 16:05:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:22,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:22,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:22,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:22,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,939 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:22,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:22,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:22,988 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:22,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:23,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:23,027 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:23,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-16 16:05:23,466 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-16 16:05:23,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 310 treesize of output 317 [2022-11-16 16:05:23,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:05:23,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-16 16:05:23,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:05:23,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-16 16:05:23,901 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 16:05:23,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 392 treesize of output 389 [2022-11-16 16:05:23,991 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:28,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1814983847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:28,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:28,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-16 16:05:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486320459] [2022-11-16 16:05:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 16:05:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 16:05:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:05:28,458 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-16 16:05:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:29,777 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-11-16 16:05:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 16:05:29,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 [2022-11-16 16:05:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:29,778 INFO L225 Difference]: With dead ends: 74 [2022-11-16 16:05:29,778 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 16:05:29,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-16 16:05:29,780 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:29,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 116 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 16:05:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 16:05:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-16 16:05:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 72 states have internal predecessors, (78), 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) [2022-11-16 16:05:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-16 16:05:29,786 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2022-11-16 16:05:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:29,786 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-16 16:05:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-16 16:05:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-16 16:05:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:05:29,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:29,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:29,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 16:05:29,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 891856784, now seen corresponding path program 1 times [2022-11-16 16:05:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:29,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082071378] [2022-11-16 16:05:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 16:05:30,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:30,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082071378] [2022-11-16 16:05:30,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082071378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:30,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348061654] [2022-11-16 16:05:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:30,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:30,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:30,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:05:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:30,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 16:05:30,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:30,458 INFO L350 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 [2022-11-16 16:05:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:05:30,507 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:05:30,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:05:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 16:05:30,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 16:05:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348061654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:30,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210658971] [2022-11-16 16:05:30,619 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-16 16:05:30,619 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:30,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:30,620 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:30,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:05:30,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 16:05:30,715 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:30,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:05:30,754 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:30,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:30,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:30,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:30,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:30,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:30,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:30,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-16 16:05:31,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:31,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:31,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:31,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,332 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:31,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:31,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,378 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:31,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:31,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,417 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:31,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-16 16:05:31,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:31,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,619 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:31,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-16 16:05:31,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,664 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:31,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-16 16:05:31,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:31,723 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:31,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-16 16:05:32,329 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-11-16 16:05:32,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 596 treesize of output 590 [2022-11-16 16:05:32,656 INFO L321 Elim1Store]: treesize reduction 200, result has 14.5 percent of original size [2022-11-16 16:05:32,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 539 [2022-11-16 16:05:32,728 INFO L321 Elim1Store]: treesize reduction 130, result has 17.7 percent of original size [2022-11-16 16:05:32,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 643 treesize of output 639 [2022-11-16 16:05:32,824 INFO L321 Elim1Store]: treesize reduction 200, result has 13.8 percent of original size [2022-11-16 16:05:32,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 617 [2022-11-16 16:05:32,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:32,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,008 INFO L321 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2022-11-16 16:05:33,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 658 treesize of output 642 [2022-11-16 16:05:33,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,109 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-11-16 16:05:33,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 548 [2022-11-16 16:05:33,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,208 INFO L321 Elim1Store]: treesize reduction 222, result has 16.9 percent of original size [2022-11-16 16:05:33,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 626 [2022-11-16 16:05:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,387 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:33,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-16 16:05:33,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,430 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:33,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:33,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,479 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:33,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-16 16:05:33,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,672 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:33,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-16 16:05:33,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,724 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:33,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-16 16:05:33,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:33,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:33,767 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 16:05:33,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 379 treesize of output 360 [2022-11-16 16:05:34,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 16:05:34,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:05:34,408 INFO L350 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 11 treesize of output 7 [2022-11-16 16:05:34,416 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:34,425 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:34,444 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:39,251 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1266#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~head#1.base|) 1)) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-16 16:05:39,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:05:39,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:39,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-11-16 16:05:39,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831089443] [2022-11-16 16:05:39,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:05:39,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:05:39,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:05:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-16 16:05:39,254 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-11-16 16:05:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:39,408 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2022-11-16 16:05:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:39,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 19 [2022-11-16 16:05:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:39,409 INFO L225 Difference]: With dead ends: 115 [2022-11-16 16:05:39,409 INFO L226 Difference]: Without dead ends: 115 [2022-11-16 16:05:39,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-16 16:05:39,411 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:39,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 88 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-16 16:05:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-16 16:05:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2022-11-16 16:05:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.702127659574468) internal successors, (80), 72 states have internal predecessors, (80), 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) [2022-11-16 16:05:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-16 16:05:39,421 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 19 [2022-11-16 16:05:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:39,421 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-16 16:05:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-11-16 16:05:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-16 16:05:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:05:39,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:39,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:39,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 16:05:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 16:05:39,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 891856785, now seen corresponding path program 1 times [2022-11-16 16:05:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444741984] [2022-11-16 16:05:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:40,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:40,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444741984] [2022-11-16 16:05:40,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444741984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:40,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542168574] [2022-11-16 16:05:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:40,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:40,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:05:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:40,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 16:05:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:40,192 INFO L350 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 [2022-11-16 16:05:40,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:40,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:05:40,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:40,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:05:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:40,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:44,638 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| Int)) (or (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| Int) (v_ArrVal_359 Int)) (or (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_360 Int)) (<= (+ |c_ULTIMATE.start_main_~#s~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| v_ArrVal_359) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| v_ArrVal_360) |c_ULTIMATE.start_main_~#s~0#1.base|))))) (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| |c_#StackHeapBarrier|)))) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.offset|)) is different from false [2022-11-16 16:05:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 16:05:44,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542168574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:05:44,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [841310043] [2022-11-16 16:05:44,643 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-16 16:05:44,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:05:44,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:05:44,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:05:44,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:05:44,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:05:44,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 16:05:44,738 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:44,753 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:44,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:05:44,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:44,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:44,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:44,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:44,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:05:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:44,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-16 16:05:45,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:45,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:05:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:45,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:05:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:45,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,337 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:45,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-16 16:05:45,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,375 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:45,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-11-16 16:05:45,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,420 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:45,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-16 16:05:45,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,640 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:45,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-16 16:05:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,687 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 16:05:45,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 386 treesize of output 367 [2022-11-16 16:05:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:45,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:45,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 384 [2022-11-16 16:05:46,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,207 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-16 16:05:46,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-16 16:05:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:46,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:05:46,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:05:46,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:46,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:05:46,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:05:46,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,559 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:46,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-16 16:05:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,600 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:46,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-11-16 16:05:46,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,642 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 16:05:46,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-16 16:05:46,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,874 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:46,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-16 16:05:46,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:46,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,918 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 16:05:46,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 367 [2022-11-16 16:05:46,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:05:46,962 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 16:05:46,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 389 treesize of output 384 [2022-11-16 16:05:47,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 16:05:47,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:05:47,434 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:47,442 INFO L350 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 15 treesize of output 1 [2022-11-16 16:05:47,459 INFO L350 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 11 treesize of output 7 [2022-11-16 16:05:47,480 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:05:52,311 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1586#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (<= (+ |ULTIMATE.start_dll_remove_last_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_last_~head#1.base|))) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-16 16:05:52,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:05:52,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 10 [2022-11-16 16:05:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744947147] [2022-11-16 16:05:52,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:05:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:05:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:05:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=313, Unknown=1, NotChecked=38, Total=462 [2022-11-16 16:05:52,314 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 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) [2022-11-16 16:05:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:52,606 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-16 16:05:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 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 19 [2022-11-16 16:05:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:52,607 INFO L225 Difference]: With dead ends: 102 [2022-11-16 16:05:52,608 INFO L226 Difference]: Without dead ends: 102 [2022-11-16 16:05:52,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=146, Invalid=409, Unknown=1, NotChecked=44, Total=600 [2022-11-16 16:05:52,609 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 397 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:52,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 39 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 94 Unchecked, 0.2s Time] [2022-11-16 16:05:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-16 16:05:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 69. [2022-11-16 16:05:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5625) internal successors, (75), 68 states have internal predecessors, (75), 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) [2022-11-16 16:05:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-16 16:05:52,615 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 19 [2022-11-16 16:05:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:52,616 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-16 16:05:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 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) [2022-11-16 16:05:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-16 16:05:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:05:52,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:52,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:52,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:52,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:52,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756558, now seen corresponding path program 1 times [2022-11-16 16:05:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245466115] [2022-11-16 16:05:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:52,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 16:05:53,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245466115] [2022-11-16 16:05:53,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245466115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:53,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:53,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 16:05:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580776298] [2022-11-16 16:05:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:53,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:53,059 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2022-11-16 16:05:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:53,322 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2022-11-16 16:05:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:05:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 20 [2022-11-16 16:05:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:53,323 INFO L225 Difference]: With dead ends: 99 [2022-11-16 16:05:53,323 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 16:05:53,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:05:53,324 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:53,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 117 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:05:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 16:05:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2022-11-16 16:05:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 68 states have internal predecessors, (76), 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) [2022-11-16 16:05:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-16 16:05:53,329 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 20 [2022-11-16 16:05:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-16 16:05:53,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2022-11-16 16:05:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-16 16:05:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:05:53,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:53,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:53,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:05:53,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756559, now seen corresponding path program 1 times [2022-11-16 16:05:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:53,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382480105] [2022-11-16 16:05:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:53,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:53,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382480105] [2022-11-16 16:05:53,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382480105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:53,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:53,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 16:05:53,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003993132] [2022-11-16 16:05:53,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:53,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:53,720 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-16 16:05:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:53,988 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2022-11-16 16:05:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 20 [2022-11-16 16:05:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:53,990 INFO L225 Difference]: With dead ends: 93 [2022-11-16 16:05:53,990 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 16:05:53,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:05:53,991 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:53,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 101 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:05:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 16:05:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2022-11-16 16:05:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 66 states have internal predecessors, (73), 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) [2022-11-16 16:05:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-11-16 16:05:53,995 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 20 [2022-11-16 16:05:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:53,995 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-11-16 16:05:53,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-16 16:05:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-11-16 16:05:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 16:05:53,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:53,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:53,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:05:53,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1916465157, now seen corresponding path program 1 times [2022-11-16 16:05:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:53,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115457228] [2022-11-16 16:05:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:05:54,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115457228] [2022-11-16 16:05:54,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115457228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:54,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:54,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:05:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430955169] [2022-11-16 16:05:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:05:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:05:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:05:54,078 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2022-11-16 16:05:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:54,106 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2022-11-16 16:05:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:05:54,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 21 [2022-11-16 16:05:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:54,108 INFO L225 Difference]: With dead ends: 94 [2022-11-16 16:05:54,108 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 16:05:54,109 INFO L412 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 [2022-11-16 16:05:54,109 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:54,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 94 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:05:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 16:05:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-16 16:05:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 65 states have internal predecessors, (71), 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) [2022-11-16 16:05:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2022-11-16 16:05:54,114 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 21 [2022-11-16 16:05:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:54,114 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2022-11-16 16:05:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2022-11-16 16:05:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2022-11-16 16:05:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:05:54,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:54,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:05:54,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1703376233, now seen corresponding path program 1 times [2022-11-16 16:05:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:54,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163539506] [2022-11-16 16:05:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:54,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163539506] [2022-11-16 16:05:54,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163539506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:54,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:54,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 16:05:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182080128] [2022-11-16 16:05:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:54,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:54,274 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-11-16 16:05:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:54,421 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-16 16:05:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:05:54,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2022-11-16 16:05:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:54,422 INFO L225 Difference]: With dead ends: 65 [2022-11-16 16:05:54,422 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 16:05:54,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:05:54,423 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 174 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:54,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 55 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 16:05:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-16 16:05:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 64 states have internal predecessors, (70), 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) [2022-11-16 16:05:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-11-16 16:05:54,427 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 23 [2022-11-16 16:05:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:54,427 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-11-16 16:05:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-11-16 16:05:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-11-16 16:05:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:05:54,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:54,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:54,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 16:05:54,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360589, now seen corresponding path program 1 times [2022-11-16 16:05:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:54,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999359771] [2022-11-16 16:05:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:05:54,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999359771] [2022-11-16 16:05:54,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999359771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:54,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:54,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:05:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423780282] [2022-11-16 16:05:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:54,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:54,549 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2022-11-16 16:05:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:54,690 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-16 16:05:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 23 [2022-11-16 16:05:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:54,691 INFO L225 Difference]: With dead ends: 65 [2022-11-16 16:05:54,691 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 16:05:54,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:54,692 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 16:05:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-11-16 16:05:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 63 states have internal predecessors, (70), 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) [2022-11-16 16:05:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-11-16 16:05:54,696 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 23 [2022-11-16 16:05:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:54,696 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-11-16 16:05:54,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2022-11-16 16:05:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-11-16 16:05:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:05:54,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:54,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 16:05:54,698 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360588, now seen corresponding path program 1 times [2022-11-16 16:05:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:54,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442564243] [2022-11-16 16:05:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:55,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442564243] [2022-11-16 16:05:55,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442564243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:55,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:05:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378030893] [2022-11-16 16:05:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:55,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:05:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:05:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:05:55,114 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-16 16:05:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:55,531 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2022-11-16 16:05:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:05:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2022-11-16 16:05:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:55,533 INFO L225 Difference]: With dead ends: 103 [2022-11-16 16:05:55,533 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 16:05:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:05:55,534 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 233 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 110 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:05:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 16:05:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-11-16 16:05:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 70 states have internal predecessors, (81), 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) [2022-11-16 16:05:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-16 16:05:55,539 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2022-11-16 16:05:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:55,539 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-16 16:05:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-16 16:05:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-16 16:05:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 16:05:55,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:55,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:55,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 16:05:55,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1265055569, now seen corresponding path program 1 times [2022-11-16 16:05:55,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:55,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109489812] [2022-11-16 16:05:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:55,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109489812] [2022-11-16 16:05:55,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109489812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:55,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:55,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 16:05:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284167412] [2022-11-16 16:05:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:55,741 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:55,950 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2022-11-16 16:05:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:05:55,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 24 [2022-11-16 16:05:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:55,952 INFO L225 Difference]: With dead ends: 87 [2022-11-16 16:05:55,952 INFO L226 Difference]: Without dead ends: 87 [2022-11-16 16:05:55,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:05:55,953 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:55,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 84 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-16 16:05:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2022-11-16 16:05:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 73 states have internal predecessors, (84), 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) [2022-11-16 16:05:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-11-16 16:05:55,956 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 24 [2022-11-16 16:05:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:55,956 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-11-16 16:05:55,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-11-16 16:05:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 16:05:55,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:55,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 16:05:55,961 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -562016871, now seen corresponding path program 1 times [2022-11-16 16:05:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778579751] [2022-11-16 16:05:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:05:56,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:56,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778579751] [2022-11-16 16:05:56,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778579751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:56,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:56,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:05:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111244859] [2022-11-16 16:05:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:05:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:05:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:05:56,063 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-16 16:05:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:56,179 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-11-16 16:05:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:05:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 25 [2022-11-16 16:05:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:56,181 INFO L225 Difference]: With dead ends: 73 [2022-11-16 16:05:56,181 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 16:05:56,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:05:56,182 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 81 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 16:05:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-16 16:05:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:05:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-16 16:05:56,185 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 25 [2022-11-16 16:05:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:56,185 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-16 16:05:56,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-16 16:05:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-16 16:05:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 16:05:56,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:56,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:56,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 16:05:56,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash -546984227, now seen corresponding path program 1 times [2022-11-16 16:05:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:56,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584082496] [2022-11-16 16:05:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:56,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:56,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:56,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584082496] [2022-11-16 16:05:56,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584082496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:56,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:05:56,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 16:05:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395399897] [2022-11-16 16:05:56,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:56,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 16:05:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 16:05:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:05:56,664 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-11-16 16:05:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:57,106 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-16 16:05:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 16:05:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 25 [2022-11-16 16:05:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:57,107 INFO L225 Difference]: With dead ends: 75 [2022-11-16 16:05:57,107 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 16:05:57,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:05:57,108 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 177 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:57,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 110 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:05:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 16:05:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-16 16:05:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 71 states have internal predecessors, (79), 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) [2022-11-16 16:05:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2022-11-16 16:05:57,112 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 25 [2022-11-16 16:05:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:57,112 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2022-11-16 16:05:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-11-16 16:05:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2022-11-16 16:05:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 16:05:57,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:57,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 16:05:57,113 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -242653710, now seen corresponding path program 1 times [2022-11-16 16:05:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:57,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905153287] [2022-11-16 16:05:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:05:57,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:57,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905153287] [2022-11-16 16:05:57,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905153287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:57,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239106497] [2022-11-16 16:05:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:57,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:57,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:05:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:57,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 16:05:57,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:57,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:57,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:05:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:05:57,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:05:57,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239106497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:57,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:05:57,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-16 16:05:57,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618932013] [2022-11-16 16:05:57,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:57,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:05:57,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:05:57,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-16 16:05:57,679 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-16 16:05:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:05:57,829 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-11-16 16:05:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:05:57,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 26 [2022-11-16 16:05:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:05:57,830 INFO L225 Difference]: With dead ends: 78 [2022-11-16 16:05:57,830 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 16:05:57,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-16 16:05:57,832 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 144 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:05:57,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 54 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:05:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 16:05:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-11-16 16:05:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.368421052631579) internal successors, (78), 70 states have internal predecessors, (78), 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) [2022-11-16 16:05:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-16 16:05:57,835 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 26 [2022-11-16 16:05:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:05:57,835 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-16 16:05:57,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-16 16:05:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-16 16:05:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 16:05:57,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:05:57,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:05:57,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:05:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 16:05:58,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:05:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:05:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 223361305, now seen corresponding path program 1 times [2022-11-16 16:05:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:05:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193208330] [2022-11-16 16:05:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:05:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:58,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:05:58,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193208330] [2022-11-16 16:05:58,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193208330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:05:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128719213] [2022-11-16 16:05:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:05:58,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:05:58,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:05:58,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:05:58,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:05:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:05:59,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 16:05:59,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:05:59,153 INFO L350 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 [2022-11-16 16:05:59,244 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 16:05:59,245 INFO L350 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 [2022-11-16 16:05:59,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:05:59,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:05:59,390 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:05:59,390 INFO L350 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 34 treesize of output 35 [2022-11-16 16:05:59,617 INFO L350 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 15 treesize of output 7 [2022-11-16 16:05:59,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:05:59,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 16 [2022-11-16 16:05:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:05:59,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:59,796 INFO L350 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 28 treesize of output 20 [2022-11-16 16:05:59,928 INFO L321 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2022-11-16 16:05:59,929 INFO L350 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 28 treesize of output 27 [2022-11-16 16:05:59,939 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_994))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (= (select (select .cse1 .cse0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) is different from false [2022-11-16 16:05:59,971 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_992 Int) (|ULTIMATE.start_main_~#s~0#1.base| Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_992)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_994))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse1 .cse0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) is different from false [2022-11-16 16:05:59,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:05:59,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 51 [2022-11-16 16:06:00,040 INFO L321 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2022-11-16 16:06:00,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 115 [2022-11-16 16:06:00,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:00,055 INFO L350 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 99 treesize of output 91 [2022-11-16 16:06:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 16:06:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128719213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:06:00,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642182532] [2022-11-16 16:06:00,315 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-16 16:06:00,315 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:06:00,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:06:00,315 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:06:00,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:06:00,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-16 16:06:00,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-16 16:06:00,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 16:06:00,439 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:00,452 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:00,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:00,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:06:00,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:00,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-16 16:06:00,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-16 16:06:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:06:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:06:00,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-16 16:06:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:00,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:06:00,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 16:06:00,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:00,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 16:06:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 16:06:01,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:01,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-16 16:06:01,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:01,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-16 16:06:01,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,578 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-16 16:06:01,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-16 16:06:01,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-16 16:06:01,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:06:01,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-16 16:06:01,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:06:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:06:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:01,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 16:06:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 16:06:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:01,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:02,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-16 16:06:02,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-16 16:06:02,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-16 16:06:02,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 16:06:02,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:06:02,184 INFO L350 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 11 treesize of output 7 [2022-11-16 16:06:02,193 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:02,203 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:02,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:02,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:02,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:02,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:02,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:02,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:02,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:02,340 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 16:06:02,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-16 16:06:02,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:02,372 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 16:06:02,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:06:02,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 16:06:02,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:06:02,483 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:02,493 INFO L350 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 11 treesize of output 7 [2022-11-16 16:06:02,501 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:02,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:02,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:02,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:02,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:02,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:02,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:02,621 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 16:06:02,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 16:06:02,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:02,651 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 16:06:02,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-16 16:06:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:02,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-16 16:06:03,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 16:06:03,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:06:03,053 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:03,061 INFO L350 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 15 treesize of output 1 [2022-11-16 16:06:03,085 INFO L350 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 11 treesize of output 7 [2022-11-16 16:06:03,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:03,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:03,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:03,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:03,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:03,195 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 16:06:03,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-16 16:06:03,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:03,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:03,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:06:03,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:06:03,323 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 16:06:03,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-16 16:06:03,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:03,427 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:06:08,429 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3717#(and (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_last_~head#1.offset| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_remove_last_~snd_to_last~0#1.offset| 4)) (= |#NULL.base| 0))' at error location [2022-11-16 16:06:08,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:06:08,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:06:08,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 31 [2022-11-16 16:06:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011388247] [2022-11-16 16:06:08,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:06:08,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 16:06:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:06:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 16:06:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1867, Unknown=2, NotChecked=178, Total=2256 [2022-11-16 16:06:08,433 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2022-11-16 16:06:09,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:09,740 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2022-11-16 16:06:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 16:06:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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 26 [2022-11-16 16:06:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:09,741 INFO L225 Difference]: With dead ends: 117 [2022-11-16 16:06:09,742 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 16:06:09,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=405, Invalid=2681, Unknown=2, NotChecked=218, Total=3306 [2022-11-16 16:06:09,744 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 184 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:09,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 248 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 585 Invalid, 0 Unknown, 208 Unchecked, 0.5s Time] [2022-11-16 16:06:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 16:06:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 72. [2022-11-16 16:06:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 71 states have internal predecessors, (80), 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) [2022-11-16 16:06:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-11-16 16:06:09,748 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 26 [2022-11-16 16:06:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:09,748 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-11-16 16:06:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 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) [2022-11-16 16:06:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-11-16 16:06:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 16:06:09,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:09,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:09,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:06:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:09,956 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-16 16:06:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 223361306, now seen corresponding path program 1 times [2022-11-16 16:06:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458394869] [2022-11-16 16:06:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:11,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:11,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458394869] [2022-11-16 16:06:11,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458394869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:06:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096350482] [2022-11-16 16:06:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:11,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:11,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:11,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:06:11,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805be293-7e59-4c98-b63a-54eb8c4f1a0f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:06:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:11,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 16:06:11,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:06:11,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:06:11,638 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 16:06:11,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 16:06:11,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:11,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:06:11,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:11,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 16:06:11,914 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:06:11,914 INFO L350 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 65 treesize of output 60 [2022-11-16 16:06:11,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-16 16:06:12,680 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-16 16:06:12,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 62 [2022-11-16 16:06:12,718 INFO L321 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2022-11-16 16:06:12,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 38 [2022-11-16 16:06:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:06:12,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:06:13,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:13,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 329 [2022-11-16 16:06:15,354 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse6 (select (select .cse3 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse2 (select (select .cse8 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ 4 .cse6))) (let ((.cse1 (select (select .cse8 .cse2) .cse4)) (.cse0 (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse1 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (= .cse1 .cse0) (< (select (select .cse3 .cse2) .cse4) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse6)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse14 (select (select .cse16 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse12 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse13 (+ .cse14 4))) (let ((.cse10 (select (select .cse16 .cse11) .cse13)) (.cse9 (select (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse15 (select (select .cse15 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse10 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse11)) (= .cse10 0) (= .cse9 (select (select .cse12 .cse11) .cse13)) (not (= .cse14 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse18 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse17 (select (select .cse19 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse17 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse18)) (<= 0 (+ (select (select .cse19 .cse18) (+ .cse17 4)) 4)))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse21 (select (select .cse24 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse23 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse20 (select (select .cse24 .cse21) (+ 4 .cse23)))) (or (= .cse20 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse20 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse21)) (= .cse20 (select (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse22 (select (select .cse22 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse23))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse25 (select (let ((.cse32 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse25 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse30 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse31 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse31 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse30 4))) (let ((.cse26 (select (select .cse31 .cse27) .cse29))) (or (= .cse26 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse27)) (= (select (select .cse28 .cse27) .cse29) 0) (= .cse25 .cse26) (not (= .cse30 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse39 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse38 (select (select .cse39 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse34 (select (select .cse36 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse37 (+ .cse38 4))) (let ((.cse33 (select (select .cse39 .cse34) .cse37))) (or (< .cse33 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse34)) (= .cse33 0) (= (select (let ((.cse35 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse35 (select (select .cse35 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select .cse36 .cse34) .cse37)) (not (= .cse38 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse43 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse41 (select (select .cse43 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse42 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse40 (select (select .cse43 .cse41) (+ 4 .cse42)))) (or (= .cse40 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse40 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse41)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse42))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse44 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse44 (select (select .cse44 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse50 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse48 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse49 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse46 (select (select .cse50 .cse48) (+ 4 .cse49)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse45 (select (let ((.cse47 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse47 (select (select .cse47 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse45 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 .cse45)))) (= .cse46 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse48)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse49))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse51 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse51 (select (select .cse51 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse55 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse56 (select (select .cse55 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse53 (select (select .cse52 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse54 (+ .cse56 4))) (or (= (select (select .cse52 .cse53) .cse54) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse53)) (= (select (select .cse55 .cse53) .cse54) 0) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse59 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse61 (select (select .cse59 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse60 (+ 4 .cse61))) (let ((.cse57 (select (select .cse62 .cse58) .cse60))) (or (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse57 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse58)) (< (select (select .cse59 .cse58) .cse60) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse61)))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse66 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse64 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse65 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse66 .cse64) (+ .cse65 4)))) (or (< .cse63 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse64)) (= .cse63 0) (not (= .cse65 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse72 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse71 (select (select .cse72 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse68 (select (select .cse67 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse69 (+ .cse71 4))) (let ((.cse70 (select (select .cse72 .cse68) .cse69))) (or (= (select (select .cse67 .cse68) .cse69) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse70 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse68)) (= .cse70 0) (not (= .cse71 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse77 (select (select .cse76 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse73 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse74 (select (select .cse73 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse75 (+ 4 .cse77))) (or (= (select (select .cse73 .cse74) .cse75) 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse74)) (< (select (select .cse76 .cse74) .cse75) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse77))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse80 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse83 (select (select .cse80 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse79 (select (select .cse84 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (+ .cse83 4))) (let ((.cse78 (select (select .cse84 .cse79) .cse81))) (or (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse79)) (= (select (select .cse80 .cse79) .cse81) 0) (= (select (let ((.cse82 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse82 (select (select .cse82 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) .cse78) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))))) is different from false [2022-11-16 16:06:16,499 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse87 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5)) (.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0))) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0)))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse4 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse3 (select (select .cse4 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse10 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse1 (select (select .cse10 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse3 4))) (let ((.cse0 (select (select .cse10 .cse1) .cse5)) (.cse2 (select (let ((.cse7 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 0) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse3)) (< (select (select .cse4 .cse1) .cse5) .cse6) (= .cse0 .cse2))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse18 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse13 (select (select .cse18 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse15 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse15 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse16 (+ .cse13 4))) (let ((.cse12 (select (select .cse18 .cse11) .cse16)) (.cse14 (select (let ((.cse17 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse17 (select (select .cse17 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (not (= .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse12 0) (< .cse12 .cse6) (not (= .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse14 (select (select .cse15 .cse11) .cse16)) (= .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (select (let ((.cse26 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse26 (select (select .cse26 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse20 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse23 (select (select .cse20 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse25 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse19 (select (select .cse25 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse21 (+ .cse23 4))) (let ((.cse22 (select (select .cse25 .cse19) .cse21))) (or (not (= .cse19 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse20 .cse19) .cse21) 0) (= .cse22 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse23 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse24 .cse22))))))) (= .cse24 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse31 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse30 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse30 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse31 4))) (or (not (= .cse27 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse28 .cse27) .cse29) 0) (= (select (select .cse30 .cse27) .cse29) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse31 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse32 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse33 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse33 (select (select .cse33 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse37 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse35 (select (select .cse37 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse34 (select (select .cse37 .cse35) (+ .cse36 4)))) (or (= .cse34 0) (not (= .cse35 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse36)) (= .cse34 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse42 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse41 (select (select .cse42 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse38 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse39 (select (select .cse38 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse40 (+ .cse41 4))) (or (= (select (select .cse38 .cse39) .cse40) 0) (not (= .cse39 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse41)) (< (select (select .cse42 .cse39) .cse40) .cse6)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse46 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse43 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse45 (select (select .cse46 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse44 (select (select .cse46 .cse43) (+ .cse45 4)))) (or (not (= .cse43 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse44 0) (< .cse44 .cse6) (not (= .cse45 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse53 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse49 (select (select .cse53 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse51 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse47 (select (select .cse51 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (+ .cse49 4))) (let ((.cse48 (select (select .cse53 .cse47) .cse52))) (or (not (= .cse47 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse48 0) (< .cse48 .cse6) (not (= .cse49 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse50 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse50 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) (select (select .cse51 .cse47) .cse52)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse54 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse55 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse56 (select (select .cse54 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (<= 0 (+ (select (select .cse54 .cse55) (+ .cse56 4)) 4)) (not (= .cse55 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse60 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse59 (select (select .cse60 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse61 (+ .cse59 4))) (let ((.cse57 (select (select .cse62 .cse58) .cse61))) (or (= .cse57 0) (not (= .cse58 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse59)) (< (select (select .cse60 .cse58) .cse61) .cse6) (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse68 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse64 (select (select .cse68 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse68 .cse64) (+ .cse67 4)))) (or (= .cse63 0) (not (= .cse64 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse65 (select (let ((.cse66 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse66 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse65 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse63 .cse65)))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse67)) (= .cse63 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse74 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse73 (select (select .cse74 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse71 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse69 (select (select .cse71 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse72 (+ .cse73 4))) (let ((.cse70 (select (select .cse74 .cse69) .cse72))) (or (not (= .cse69 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse70 0) (< .cse70 .cse6) (= (select (select .cse71 .cse69) .cse72) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse73 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse79 (select (select .cse76 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse75 (select (select .cse81 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse77 (+ .cse79 4))) (let ((.cse78 (select (select .cse81 .cse75) .cse77))) (or (not (= .cse75 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse76 .cse75) .cse77) 0) (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse79 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse80 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse80 (select (select .cse80 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) .cse78))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse86 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse83 (select (select .cse86 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse82 (select (select .cse86 .cse83) (+ .cse84 4)))) (or (= .cse82 0) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse84)) (= .cse82 (select (let ((.cse85 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse85 (select (select .cse85 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (= .cse82 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))))) is different from false [2022-11-16 16:06:16,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:16,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 238 [2022-11-16 16:06:17,516 INFO L321 Elim1Store]: treesize reduction 325, result has 32.2 percent of original size [2022-11-16 16:06:17,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 1054 treesize of output 1007 [2022-11-16 16:06:17,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:17,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 787 treesize of output 409 [2022-11-16 16:06:17,968 INFO L321 Elim1Store]: treesize reduction 210, result has 39.5 percent of original size [2022-11-16 16:06:17,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1244 treesize of output 1177 [2022-11-16 16:06:18,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 902 treesize of output 876 [2022-11-16 16:06:18,747 INFO L321 Elim1Store]: treesize reduction 134, result has 62.0 percent of original size [2022-11-16 16:06:18,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 1158 treesize of output 1192 [2022-11-16 16:06:19,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:19,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1000 treesize of output 964 [2022-11-16 16:06:19,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:19,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1497 treesize of output 1395 [2022-11-16 16:06:19,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:06:19,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1718 treesize of output 1620 [2022-11-16 16:07:05,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-16 16:07:06,014 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-16 16:07:06,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 1 [2022-11-16 16:07:08,220 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-16 16:07:08,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 1 [2022-11-16 16:07:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-16 16:07:11,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-16 16:07:13,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-16 16:07:18,064 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:18,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:18,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:18,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:18,902 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:19,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:19,959 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:21,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:22,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:22,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:23,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:24,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:24,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:24,651 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:24,684 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:24,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:25,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:25,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:46,664 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:46,757 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:46,887 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:50,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 16:07:52,033 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-16 16:07:56,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:07:56,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 177 [2022-11-16 16:10:11,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:11,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:11,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:12,861 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:10:12,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 172 [2022-11-16 16:10:13,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:13,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:13,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:13,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:13,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:13,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:13,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:13,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:13,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:14,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:14,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:14,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:15,754 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:10:15,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 281 [2022-11-16 16:10:16,179 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:10:16,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 231 treesize of output 215 [2022-11-16 16:10:16,529 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:10:16,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1768 treesize of output 1636 [2022-11-16 16:10:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:24,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:24,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:26,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:26,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:26,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:32,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:32,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:32,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:34,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:34,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:34,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:56,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:56,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:56,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:58,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:58,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:10:58,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:10:59,120 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:10:59,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 172 [2022-11-16 16:11:03,600 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:11:03,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 317 treesize of output 289 [2022-11-16 16:11:05,106 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-16 16:11:05,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 765 treesize of output 681 [2022-11-16 16:11:15,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:15,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:15,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:11:16,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:16,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:16,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:11:22,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:22,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:22,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:11:26,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:26,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:26,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:11:29,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:11:29,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-16 16:11:33,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 16:11:46,699 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 1251 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 16:11:46,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:11:46,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 300 case distinctions, treesize of input 1047 treesize of output 3180