./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur --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 cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c --- 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-38b53e6 [2022-11-26 00:39:49,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:39:49,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:39:49,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:39:49,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:39:49,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:39:49,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:39:49,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:39:49,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:39:49,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:39:49,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:39:49,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:39:49,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:39:49,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:39:49,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:39:49,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:39:49,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:39:49,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:39:49,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:39:49,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:39:49,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:39:49,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:39:49,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:39:49,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:39:49,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:39:49,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:39:49,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:39:49,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:39:49,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:39:49,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:39:49,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:39:49,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:39:49,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:39:49,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:39:49,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:39:49,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:39:49,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:39:49,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:39:49,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:39:49,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:39:49,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:39:49,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:39:49,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:39:49,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:39:49,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:39:49,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:39:49,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:39:49,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:39:49,750 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:39:49,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:39:49,751 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:39:49,751 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:39:49,752 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:39:49,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:39:49,752 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:39:49,753 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:39:49,753 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:39:49,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:39:49,753 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:39:49,753 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:39:49,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:39:49,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:39:49,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:39:49,755 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:39:49,756 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:39:49,756 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:39:49,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:39:49,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:39:49,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:39:49,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:39:49,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:39:49,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:39:49,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:39:49,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:39:49,758 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:39:49,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:39:49,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:39:49,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:39:49,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:39:49,759 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_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c [2022-11-26 00:39:50,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:39:50,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:39:50,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:39:50,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:39:50,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:39:50,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-26 00:39:53,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:39:53,387 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:39:53,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-26 00:39:53,401 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/data/265c2340e/f2576d14236247c3bb656dea5ff1eff1/FLAG5aa30973a [2022-11-26 00:39:53,421 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/data/265c2340e/f2576d14236247c3bb656dea5ff1eff1 [2022-11-26 00:39:53,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:39:53,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:39:53,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:39:53,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:39:53,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:39:53,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:39:53" (1/1) ... [2022-11-26 00:39:53,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f707d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:53, skipping insertion in model container [2022-11-26 00:39:53,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:39:53" (1/1) ... [2022-11-26 00:39:53,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:39:53,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:39:53,992 WARN L237 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_b879dfea-04b9-44c7-8aaa-27a968912b37/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-26 00:39:54,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:39:54,013 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:39:54,067 WARN L237 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_b879dfea-04b9-44c7-8aaa-27a968912b37/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-26 00:39:54,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:39:54,098 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:39:54,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54 WrapperNode [2022-11-26 00:39:54,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:39:54,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:39:54,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:39:54,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:39:54,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,167 INFO L138 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2022-11-26 00:39:54,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:39:54,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:39:54,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:39:54,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:39:54,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:39:54,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:39:54,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:39:54,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:39:54,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (1/1) ... [2022-11-26 00:39:54,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:39:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:39:54,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:39:54,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:39:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-26 00:39:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-26 00:39:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:39:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:39:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:39:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:39:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:39:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:39:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:39:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:39:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:39:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:39:54,481 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:39:54,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:39:54,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-26 00:39:54,813 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:39:54,865 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:39:54,865 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:39:54,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:39:54 BoogieIcfgContainer [2022-11-26 00:39:54,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:39:54,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:39:54,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:39:54,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:39:54,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:39:53" (1/3) ... [2022-11-26 00:39:54,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:39:54, skipping insertion in model container [2022-11-26 00:39:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:54" (2/3) ... [2022-11-26 00:39:54,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:39:54, skipping insertion in model container [2022-11-26 00:39:54,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:39:54" (3/3) ... [2022-11-26 00:39:54,877 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext_1.i [2022-11-26 00:39:54,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:39:54,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-11-26 00:39:54,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:39:54,952 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;@6e441d55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:39:54,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-26 00:39:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:39:54,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:54,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:39:54,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash 144472609, now seen corresponding path program 1 times [2022-11-26 00:39:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:54,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198055474] [2022-11-26 00:39:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:54,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:55,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:55,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198055474] [2022-11-26 00:39:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198055474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:55,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:55,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:39:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369741764] [2022-11-26 00:39:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:55,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:39:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:39:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:39:55,172 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:55,224 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-26 00:39:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:39:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:39:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:55,233 INFO L225 Difference]: With dead ends: 48 [2022-11-26 00:39:55,234 INFO L226 Difference]: Without dead ends: 43 [2022-11-26 00:39:55,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:39:55,239 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:39:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-26 00:39:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-26 00:39:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 42 states have internal predecessors, (45), 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) [2022-11-26 00:39:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-26 00:39:55,274 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 5 [2022-11-26 00:39:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:55,275 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-26 00:39:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-26 00:39:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:39:55,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:55,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:39:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:39:55,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 183758781, now seen corresponding path program 1 times [2022-11-26 00:39:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:55,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888588511] [2022-11-26 00:39:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:55,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:55,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888588511] [2022-11-26 00:39:55,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888588511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:55,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:55,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:39:55,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811731140] [2022-11-26 00:39:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:55,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:55,417 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:55,552 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-11-26 00:39:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:39:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:39:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:55,556 INFO L225 Difference]: With dead ends: 57 [2022-11-26 00:39:55,556 INFO L226 Difference]: Without dead ends: 57 [2022-11-26 00:39:55,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:55,558 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:55,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:39:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-26 00:39:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2022-11-26 00:39:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 45 states have internal predecessors, (55), 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) [2022-11-26 00:39:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-26 00:39:55,573 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 6 [2022-11-26 00:39:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:55,573 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-26 00:39:55,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-26 00:39:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:39:55,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:55,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:39:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:39:55,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:55,579 INFO L85 PathProgramCache]: Analyzing trace with hash 183758782, now seen corresponding path program 1 times [2022-11-26 00:39:55,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:55,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572333274] [2022-11-26 00:39:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:55,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:55,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572333274] [2022-11-26 00:39:55,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572333274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:55,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:55,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:39:55,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510590295] [2022-11-26 00:39:55,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:55,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:55,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:55,884 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:56,025 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2022-11-26 00:39:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:39:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:39:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:56,027 INFO L225 Difference]: With dead ends: 85 [2022-11-26 00:39:56,028 INFO L226 Difference]: Without dead ends: 85 [2022-11-26 00:39:56,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:56,029 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:56,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 41 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:39:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-26 00:39:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2022-11-26 00:39:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 59 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) [2022-11-26 00:39:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2022-11-26 00:39:56,037 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 6 [2022-11-26 00:39:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:56,038 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2022-11-26 00:39:56,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2022-11-26 00:39:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:39:56,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:56,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:56,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:39:56,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1946737033, now seen corresponding path program 1 times [2022-11-26 00:39:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:56,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637257076] [2022-11-26 00:39:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:56,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:56,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637257076] [2022-11-26 00:39:56,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637257076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:56,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:56,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:39:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097352653] [2022-11-26 00:39:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:56,127 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2022-11-26 00:39:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:56,200 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2022-11-26 00:39:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:39:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 10 [2022-11-26 00:39:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:56,201 INFO L225 Difference]: With dead ends: 72 [2022-11-26 00:39:56,202 INFO L226 Difference]: Without dead ends: 72 [2022-11-26 00:39:56,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:56,203 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:56,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 30 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:39:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-26 00:39:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-11-26 00:39:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 59 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) [2022-11-26 00:39:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-11-26 00:39:56,210 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 10 [2022-11-26 00:39:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:56,210 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-11-26 00:39:56,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2022-11-26 00:39:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-11-26 00:39:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:39:56,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:56,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:39:56,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:56,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash -221270335, now seen corresponding path program 1 times [2022-11-26 00:39:56,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:56,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633653710] [2022-11-26 00:39:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:56,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:56,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633653710] [2022-11-26 00:39:56,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633653710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:56,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:56,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:39:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063340783] [2022-11-26 00:39:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:39:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:39:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:39:56,679 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-26 00:39:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:57,042 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2022-11-26 00:39:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:39:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 [2022-11-26 00:39:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:57,044 INFO L225 Difference]: With dead ends: 66 [2022-11-26 00:39:57,044 INFO L226 Difference]: Without dead ends: 66 [2022-11-26 00:39:57,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:39:57,046 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 65 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:57,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 68 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:39:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-26 00:39:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-11-26 00:39:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 59 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) [2022-11-26 00:39:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-11-26 00:39:57,052 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 11 [2022-11-26 00:39:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:57,052 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-11-26 00:39:57,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-26 00:39:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-11-26 00:39:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:39:57,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:57,054 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:39:57,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1198442593, now seen corresponding path program 1 times [2022-11-26 00:39:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:57,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620277362] [2022-11-26 00:39:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:57,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620277362] [2022-11-26 00:39:57,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620277362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:57,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:57,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:39:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637880913] [2022-11-26 00:39:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:39:57,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:39:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:57,243 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:57,379 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-11-26 00:39:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:39:57,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-26 00:39:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:57,382 INFO L225 Difference]: With dead ends: 64 [2022-11-26 00:39:57,382 INFO L226 Difference]: Without dead ends: 64 [2022-11-26 00:39:57,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:39:57,391 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:57,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 53 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:39:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-26 00:39:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-26 00:39:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 57 states have internal predecessors, (68), 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) [2022-11-26 00:39:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-26 00:39:57,399 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 12 [2022-11-26 00:39:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:57,400 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-26 00:39:57,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-26 00:39:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:39:57,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:57,401 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:57,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:39:57,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1198442592, now seen corresponding path program 1 times [2022-11-26 00:39:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545621123] [2022-11-26 00:39:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:57,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:57,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:57,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545621123] [2022-11-26 00:39:57,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545621123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:57,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:57,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:39:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584778395] [2022-11-26 00:39:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:57,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:39:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:39:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:57,637 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:57,806 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-11-26 00:39:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:39:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-26 00:39:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:57,807 INFO L225 Difference]: With dead ends: 59 [2022-11-26 00:39:57,808 INFO L226 Difference]: Without dead ends: 59 [2022-11-26 00:39:57,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:39:57,809 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:57,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:39:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-26 00:39:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2022-11-26 00:39:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.475) internal successors, (59), 48 states have internal predecessors, (59), 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) [2022-11-26 00:39:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-11-26 00:39:57,814 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 12 [2022-11-26 00:39:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:57,814 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-11-26 00:39:57,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-11-26 00:39:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:39:57,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:57,815 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:57,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:39:57,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:39:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2107766282, now seen corresponding path program 1 times [2022-11-26 00:39:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:57,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138585581] [2022-11-26 00:39:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:58,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:58,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138585581] [2022-11-26 00:39:58,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138585581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:39:58,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096683727] [2022-11-26 00:39:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:58,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:39:58,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:39:58,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:39:58,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:39:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-26 00:39:58,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:39:58,448 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 [2022-11-26 00:39:58,454 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 [2022-11-26 00:39:58,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:39:58,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 00:39:58,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:39:58,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:39:58,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-11-26 00:39:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:58,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:39:58,781 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 47 treesize of output 41 [2022-11-26 00:39:58,790 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 39 treesize of output 33 [2022-11-26 00:39:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:58,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096683727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:39:58,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2272551] [2022-11-26 00:39:59,007 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-26 00:39:59,008 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:39:59,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:39:59,018 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:39:59,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:39:59,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,063 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 [2022-11-26 00:39:59,151 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 15 treesize of output 1 [2022-11-26 00:39:59,161 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 15 treesize of output 1 [2022-11-26 00:39:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:39:59,209 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 [2022-11-26 00:39:59,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:59,224 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 [2022-11-26 00:39:59,237 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 [2022-11-26 00:39:59,377 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:40:00,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2272551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:00,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:40:00,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7, 7] total 20 [2022-11-26 00:40:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24127292] [2022-11-26 00:40:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:40:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:40:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:40:00,699 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:00,952 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-11-26 00:40:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:40:00,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:40:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:00,953 INFO L225 Difference]: With dead ends: 55 [2022-11-26 00:40:00,953 INFO L226 Difference]: Without dead ends: 55 [2022-11-26 00:40:00,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:40:00,954 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:00,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:40:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-26 00:40:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2022-11-26 00:40:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 45 states have internal predecessors, (52), 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) [2022-11-26 00:40:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-26 00:40:00,958 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2022-11-26 00:40:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:00,964 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-26 00:40:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-26 00:40:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:40:00,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:00,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:00,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:40:01,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:01,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1659230224, now seen corresponding path program 1 times [2022-11-26 00:40:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487698274] [2022-11-26 00:40:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:40:01,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487698274] [2022-11-26 00:40:01,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487698274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:01,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:01,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:40:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132365284] [2022-11-26 00:40:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:40:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:40:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:40:01,248 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 4 states, 3 states have (on average 5.0) 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) [2022-11-26 00:40:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:01,312 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-11-26 00:40:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:40:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) 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 15 [2022-11-26 00:40:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:01,313 INFO L225 Difference]: With dead ends: 61 [2022-11-26 00:40:01,314 INFO L226 Difference]: Without dead ends: 61 [2022-11-26 00:40:01,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:40:01,317 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:01,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:40:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-26 00:40:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2022-11-26 00:40:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.394736842105263) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-26 00:40:01,326 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2022-11-26 00:40:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:01,326 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-26 00:40:01,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) 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) [2022-11-26 00:40:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-26 00:40:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:40:01,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:01,327 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:40:01,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1259933215, now seen corresponding path program 1 times [2022-11-26 00:40:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:01,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189588503] [2022-11-26 00:40:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:01,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189588503] [2022-11-26 00:40:01,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189588503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:40:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117650502] [2022-11-26 00:40:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:01,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:01,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:40:01,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:40:01,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:40:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:01,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:40:01,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:40:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:01,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:40:01,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:01,865 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 20 treesize of output 24 [2022-11-26 00:40:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:01,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117650502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:40:01,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1269871933] [2022-11-26 00:40:01,983 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:40:01,983 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:40:01,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:40:01,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:40:01,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:40:02,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,020 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 [2022-11-26 00:40:02,095 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 15 treesize of output 1 [2022-11-26 00:40:02,104 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 15 treesize of output 1 [2022-11-26 00:40:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:40:02,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:40:02,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,185 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 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:40:02,197 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 [2022-11-26 00:40:02,212 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 [2022-11-26 00:40:02,313 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-26 00:40:02,313 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 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-26 00:40:02,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,329 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 138 treesize of output 78 [2022-11-26 00:40:02,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,359 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 41 treesize of output 48 [2022-11-26 00:40:02,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,388 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 35 treesize of output 40 [2022-11-26 00:40:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,442 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 50 treesize of output 43 [2022-11-26 00:40:02,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-26 00:40:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:02,480 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 32 treesize of output 25 [2022-11-26 00:40:02,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:03,025 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-26 00:40:03,025 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 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-26 00:40:03,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:03,118 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-26 00:40:03,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 477 treesize of output 377 [2022-11-26 00:40:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:03,296 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-26 00:40:03,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 452 treesize of output 457 [2022-11-26 00:40:03,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:03,370 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-26 00:40:03,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 454 treesize of output 423 [2022-11-26 00:40:03,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:03,876 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-26 00:40:03,877 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 1274 treesize of output 843 [2022-11-26 00:40:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:03,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:03,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:03,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:03,939 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-26 00:40:03,940 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 9 case distinctions, treesize of input 1107 treesize of output 1067 [2022-11-26 00:40:03,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:04,046 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-26 00:40:04,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 1094 treesize of output 1046 [2022-11-26 00:40:04,464 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:04,465 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:04,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:04,486 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:40:04,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 26 [2022-11-26 00:40:04,525 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:04,526 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:04,566 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:04,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:04,605 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 [2022-11-26 00:40:04,642 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 [2022-11-26 00:40:04,669 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:04,669 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 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-26 00:40:04,697 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:04,698 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 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-26 00:40:04,823 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 15 treesize of output 1 [2022-11-26 00:40:04,828 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 11 treesize of output 7 [2022-11-26 00:40:04,834 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 15 treesize of output 1 [2022-11-26 00:40:04,847 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 [2022-11-26 00:40:04,853 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 [2022-11-26 00:40:04,863 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 27 treesize of output 11 [2022-11-26 00:40:04,995 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:04,995 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 151 [2022-11-26 00:40:05,055 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:05,055 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 145 [2022-11-26 00:40:05,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:05,197 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-26 00:40:05,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-26 00:40:05,292 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-26 00:40:05,292 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 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-26 00:40:07,088 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:07,145 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 127 treesize of output 136 [2022-11-26 00:40:07,227 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:07,301 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:07,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:07,351 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:07,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:07,460 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:07,492 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:07,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:07,518 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:07,555 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:07,569 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:07,652 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:07,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:07,711 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:07,749 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:07,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:07,807 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:07,891 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:07,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:07,975 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:07,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:08,052 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:08,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:08,908 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:40:10,093 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1342#(and (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_70| Int) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_79|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_79|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 4)) 0) (<= (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 8) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_79|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_79|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 4)) 0) (<= 0 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_79|) |v_ULTIMATE.start_main_~p~0#1.offset_70|)) (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_70|))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (not (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|))) (<= 0 |#StackHeapBarrier|) (not (= 0 |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.base| 0))' at error location [2022-11-26 00:40:10,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:40:10,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:40:10,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-26 00:40:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617149146] [2022-11-26 00:40:10,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:40:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:40:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:40:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2022-11-26 00:40:10,098 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-26 00:40:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:10,318 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-11-26 00:40:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:40:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 [2022-11-26 00:40:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:10,320 INFO L225 Difference]: With dead ends: 61 [2022-11-26 00:40:10,320 INFO L226 Difference]: Without dead ends: 61 [2022-11-26 00:40:10,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:40:10,321 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 93 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:10,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 63 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:40:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-26 00:40:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2022-11-26 00:40:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.368421052631579) internal successors, (52), 46 states have internal predecessors, (52), 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) [2022-11-26 00:40:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-26 00:40:10,325 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 15 [2022-11-26 00:40:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:10,325 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-26 00:40:10,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-26 00:40:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-26 00:40:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:40:10,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:10,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:10,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:40:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:40:10,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 103470743, now seen corresponding path program 1 times [2022-11-26 00:40:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:10,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681400573] [2022-11-26 00:40:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:10,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:40:10,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:10,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681400573] [2022-11-26 00:40:10,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681400573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:10,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:40:10,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:40:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771400823] [2022-11-26 00:40:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:40:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:40:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:40:10,603 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:10,661 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-11-26 00:40:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:40:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-26 00:40:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:10,663 INFO L225 Difference]: With dead ends: 57 [2022-11-26 00:40:10,663 INFO L226 Difference]: Without dead ends: 57 [2022-11-26 00:40:10,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:40:10,664 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:10,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:40:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-26 00:40:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2022-11-26 00:40:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-11-26 00:40:10,673 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 16 [2022-11-26 00:40:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:10,674 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-11-26 00:40:10,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-11-26 00:40:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:40:10,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:10,676 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:10,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:40:10,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash -384957409, now seen corresponding path program 1 times [2022-11-26 00:40:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:10,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576111690] [2022-11-26 00:40:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:11,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:11,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576111690] [2022-11-26 00:40:11,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576111690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:40:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224273540] [2022-11-26 00:40:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:11,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:40:11,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:40:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:40:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:11,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-26 00:40:11,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:40:11,304 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 11 treesize of output 7 [2022-11-26 00:40:11,317 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:40:11,318 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 [2022-11-26 00:40:11,374 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 [2022-11-26 00:40:11,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:11,386 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 21 treesize of output 20 [2022-11-26 00:40:11,422 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 20 treesize of output 8 [2022-11-26 00:40:11,465 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 14 treesize of output 16 [2022-11-26 00:40:11,480 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 14 treesize of output 16 [2022-11-26 00:40:11,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:11,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:11,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-26 00:40:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:11,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:40:11,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:11,822 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 23 treesize of output 29 [2022-11-26 00:40:11,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:11,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-26 00:40:11,852 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 00:40:11,853 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 13 treesize of output 12 [2022-11-26 00:40:11,865 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 9 treesize of output 7 [2022-11-26 00:40:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:12,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224273540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:40:12,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335292811] [2022-11-26 00:40:12,044 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-26 00:40:12,044 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:40:12,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:40:12,045 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:40:12,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:40:12,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,061 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 [2022-11-26 00:40:12,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:40:12,164 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 15 treesize of output 1 [2022-11-26 00:40:12,171 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 15 treesize of output 1 [2022-11-26 00:40:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:40:12,203 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 [2022-11-26 00:40:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,218 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 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:40:12,231 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 [2022-11-26 00:40:12,307 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-26 00:40:12,308 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 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-26 00:40:12,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,321 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 138 treesize of output 78 [2022-11-26 00:40:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-26 00:40:12,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,370 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 35 treesize of output 40 [2022-11-26 00:40:12,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,409 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:40:12,409 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 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-26 00:40:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,421 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 [2022-11-26 00:40:12,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:12,433 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 136 treesize of output 87 [2022-11-26 00:40:12,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:12,823 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-26 00:40:12,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 464 treesize of output 433 [2022-11-26 00:40:12,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:12,939 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-26 00:40:12,940 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 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-26 00:40:12,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:13,007 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-26 00:40:13,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 477 treesize of output 377 [2022-11-26 00:40:13,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:13,160 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-26 00:40:13,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 452 treesize of output 457 [2022-11-26 00:40:13,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:13,478 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-26 00:40:13,479 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 661 treesize of output 446 [2022-11-26 00:40:13,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:13,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:13,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:13,543 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-26 00:40:13,544 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 9 case distinctions, treesize of input 584 treesize of output 568 [2022-11-26 00:40:13,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:13,639 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-26 00:40:13,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 571 treesize of output 561 [2022-11-26 00:40:13,920 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 11 treesize of output 7 [2022-11-26 00:40:13,955 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:13,956 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:14,004 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:14,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:14,037 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:14,038 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 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:14,054 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:40:14,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 26 [2022-11-26 00:40:14,107 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 [2022-11-26 00:40:14,135 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:14,136 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 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-26 00:40:14,171 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:14,171 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 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-26 00:40:14,289 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 11 treesize of output 7 [2022-11-26 00:40:14,295 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 15 treesize of output 1 [2022-11-26 00:40:14,301 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 15 treesize of output 1 [2022-11-26 00:40:14,314 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 [2022-11-26 00:40:14,321 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 27 treesize of output 11 [2022-11-26 00:40:14,327 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 [2022-11-26 00:40:14,479 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:14,479 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 151 [2022-11-26 00:40:14,526 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:14,526 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 145 [2022-11-26 00:40:14,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:14,648 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-26 00:40:14,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-26 00:40:14,719 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-26 00:40:14,719 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 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-26 00:40:19,685 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:19,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:19,719 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:19,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:19,745 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:19,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:19,784 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:19,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:19,819 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:19,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:19,858 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:19,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:19,949 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:19,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,031 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:20,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:20,101 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,157 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:20,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:20,202 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:20,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:20,260 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:20,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,367 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:20,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,432 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,456 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,514 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:20,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,571 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:20,613 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:20,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:20,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:20,681 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:20,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:20,775 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:20,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:20,812 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,840 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,897 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:20,933 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:20,970 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:20,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:21,025 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:21,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:21,080 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:21,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:21,139 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:21,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 1 [2022-11-26 00:40:21,196 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:21,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:21,373 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:21,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 561 treesize of output 550 [2022-11-26 00:40:21,584 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:21,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:21,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:21,627 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:21,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 116 treesize of output 121 [2022-11-26 00:40:21,695 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:21,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:21,720 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:21,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:21,746 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:21,759 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:21,809 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:21,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:21,844 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:21,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:21,906 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:21,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:21,933 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:21,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:22,000 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:22,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:22,043 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,074 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 154 treesize of output 1 [2022-11-26 00:40:22,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:22,124 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:22,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:22,257 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:22,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:22,318 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:22,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:22,385 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:22,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:22,439 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,493 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,526 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,570 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,605 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:22,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:22,649 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:22,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:24,089 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:40:25,487 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1696#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) |ULTIMATE.start_main_~i~0#1|)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1) (exists ((|v_ULTIMATE.start_main_~p~0#1.base_89| Int) (|v_ULTIMATE.start_main_~p~0#1.offset_78| Int)) (and (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_78|) (<= 0 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_89|) |v_ULTIMATE.start_main_~p~0#1.offset_78|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_89|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_89|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 4)) 0) (<= (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 8) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_89|)) (= 1 (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_89|)))) (<= 0 |#StackHeapBarrier|) (not (= 0 |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.base| 0))' at error location [2022-11-26 00:40:25,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:40:25,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:40:25,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-26 00:40:25,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488226204] [2022-11-26 00:40:25,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:40:25,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-26 00:40:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-26 00:40:25,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=959, Unknown=5, NotChecked=0, Total=1122 [2022-11-26 00:40:25,490 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:26,496 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-11-26 00:40:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:40:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:40:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:26,498 INFO L225 Difference]: With dead ends: 69 [2022-11-26 00:40:26,498 INFO L226 Difference]: Without dead ends: 69 [2022-11-26 00:40:26,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=240, Invalid=1395, Unknown=5, NotChecked=0, Total=1640 [2022-11-26 00:40:26,500 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 123 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 27 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:26,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 119 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 319 Invalid, 12 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:40:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-26 00:40:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2022-11-26 00:40:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.3) internal successors, (65), 58 states have internal predecessors, (65), 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) [2022-11-26 00:40:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-26 00:40:26,512 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 17 [2022-11-26 00:40:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:26,514 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-26 00:40:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:40:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-26 00:40:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:40:26,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:26,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:26,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:40:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-26 00:40:26,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1289477116, now seen corresponding path program 1 times [2022-11-26 00:40:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:26,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704195155] [2022-11-26 00:40:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:40:26,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:26,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704195155] [2022-11-26 00:40:26,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704195155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:40:26,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271614658] [2022-11-26 00:40:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:26,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:40:26,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:40:26,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:40:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:26,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:40:26,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:40:26,974 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 13 treesize of output 9 [2022-11-26 00:40:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:40:26,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:40:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:40:27,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271614658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:40:27,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18999762] [2022-11-26 00:40:27,027 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-26 00:40:27,027 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:40:27,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:40:27,027 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:40:27,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:40:27,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,049 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 [2022-11-26 00:40:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:40:27,102 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 15 treesize of output 1 [2022-11-26 00:40:27,109 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 15 treesize of output 1 [2022-11-26 00:40:27,131 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 [2022-11-26 00:40:27,138 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 [2022-11-26 00:40:27,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:27,149 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 [2022-11-26 00:40:27,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:40:29,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [18999762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:40:29,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:40:29,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 15 [2022-11-26 00:40:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064185584] [2022-11-26 00:40:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:40:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:40:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:40:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:40:29,560 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2022-11-26 00:40:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:29,872 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-11-26 00:40:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:40:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 19 [2022-11-26 00:40:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:29,873 INFO L225 Difference]: With dead ends: 69 [2022-11-26 00:40:29,874 INFO L226 Difference]: Without dead ends: 52 [2022-11-26 00:40:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:40:29,875 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:40:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-26 00:40:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-26 00:40:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 51 states have internal predecessors, (56), 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) [2022-11-26 00:40:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-11-26 00:40:29,879 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 19 [2022-11-26 00:40:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:29,880 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-11-26 00:40:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2022-11-26 00:40:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-11-26 00:40:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:40:29,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:29,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:29,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:40:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:30,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -576689176, now seen corresponding path program 1 times [2022-11-26 00:40:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:30,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155058126] [2022-11-26 00:40:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:30,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:30,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155058126] [2022-11-26 00:40:30,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155058126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:40:30,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662294179] [2022-11-26 00:40:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:30,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:30,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:40:30,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:40:30,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:40:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:30,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 00:40:30,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:40:30,686 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:30,687 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 [2022-11-26 00:40:30,745 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 [2022-11-26 00:40:30,890 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:40:30,890 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-26 00:40:30,926 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:40:30,928 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 [2022-11-26 00:40:31,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:31,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-26 00:40:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:31,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:40:31,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:31,305 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 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-26 00:40:31,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:31,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-26 00:40:31,335 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 7 treesize of output 5 [2022-11-26 00:40:31,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:31,345 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 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-26 00:40:31,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:31,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-11-26 00:40:31,363 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 13 treesize of output 9 [2022-11-26 00:40:31,633 INFO L321 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2022-11-26 00:40:31,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 95 [2022-11-26 00:40:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:31,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662294179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:40:31,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641274945] [2022-11-26 00:40:31,815 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-26 00:40:31,816 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:40:31,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:40:31,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:40:31,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:40:31,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,840 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 [2022-11-26 00:40:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:40:31,898 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 15 treesize of output 1 [2022-11-26 00:40:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:40:31,922 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 15 treesize of output 1 [2022-11-26 00:40:31,944 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 [2022-11-26 00:40:31,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:31,957 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 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:40:31,967 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 [2022-11-26 00:40:32,032 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-26 00:40:32,032 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 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-26 00:40:32,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,043 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 138 treesize of output 78 [2022-11-26 00:40:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-26 00:40:32,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,092 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 42 treesize of output 43 [2022-11-26 00:40:32,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:32,127 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:40:32,128 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 1 case distinctions, treesize of input 136 treesize of output 87 [2022-11-26 00:40:32,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,142 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 23 treesize of output 22 [2022-11-26 00:40:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,161 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 50 treesize of output 43 [2022-11-26 00:40:32,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:32,465 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-26 00:40:32,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 464 treesize of output 370 [2022-11-26 00:40:32,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:32,601 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-26 00:40:32,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 462 treesize of output 467 [2022-11-26 00:40:32,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:32,728 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-26 00:40:32,729 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 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-26 00:40:32,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:32,785 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-26 00:40:32,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 454 treesize of output 423 [2022-11-26 00:40:33,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:33,142 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-26 00:40:33,143 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 1274 treesize of output 843 [2022-11-26 00:40:33,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:33,192 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-26 00:40:33,192 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 9 case distinctions, treesize of input 1107 treesize of output 1067 [2022-11-26 00:40:33,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:33,291 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-26 00:40:33,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 1094 treesize of output 1046 [2022-11-26 00:40:33,629 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 11 treesize of output 7 [2022-11-26 00:40:33,659 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:33,660 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:33,698 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:33,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:33,712 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:40:33,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 26 [2022-11-26 00:40:33,742 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:33,742 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 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-26 00:40:33,818 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:33,818 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 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-26 00:40:33,853 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:40:33,853 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 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-26 00:40:33,879 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 [2022-11-26 00:40:33,958 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 15 treesize of output 1 [2022-11-26 00:40:33,962 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 11 treesize of output 7 [2022-11-26 00:40:33,967 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 15 treesize of output 1 [2022-11-26 00:40:33,978 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 [2022-11-26 00:40:33,987 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 27 treesize of output 11 [2022-11-26 00:40:33,994 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 [2022-11-26 00:40:34,232 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:34,232 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 151 [2022-11-26 00:40:34,274 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-26 00:40:34,275 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 145 [2022-11-26 00:40:34,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,403 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-26 00:40:34,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-26 00:40:34,469 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-26 00:40:34,469 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 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-26 00:40:37,378 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:37,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:37,435 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:37,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:37,481 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:37,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:37,570 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:37,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:37,628 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:40:37,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-26 00:40:37,706 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:37,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:37,736 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:37,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-26 00:40:37,783 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:37,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:37,853 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:37,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:37,978 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:37,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 343 treesize of output 344 [2022-11-26 00:40:38,123 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:38,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 171 treesize of output 178 [2022-11-26 00:40:38,249 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:38,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:38,293 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:38,315 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:38,330 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:38,394 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:38,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:38,437 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:38,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:38,518 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:38,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:38,541 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:40:38,577 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:38,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:38,619 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:38,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:38,670 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-26 00:40:38,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-26 00:40:38,747 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:38,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-26 00:40:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:38,799 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-26 00:40:38,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:40:38,895 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:38,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 171 treesize of output 178 [2022-11-26 00:40:40,211 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:40:41,479 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2228#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:40:41,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:40:41,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:40:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-26 00:40:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322545651] [2022-11-26 00:40:41,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:40:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-26 00:40:41,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:40:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-26 00:40:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1089, Unknown=2, NotChecked=0, Total=1260 [2022-11-26 00:40:41,482 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-26 00:40:42,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:40:42,108 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-11-26 00:40:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:40:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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 [2022-11-26 00:40:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:40:42,109 INFO L225 Difference]: With dead ends: 83 [2022-11-26 00:40:42,109 INFO L226 Difference]: Without dead ends: 83 [2022-11-26 00:40:42,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=244, Invalid=1476, Unknown=2, NotChecked=0, Total=1722 [2022-11-26 00:40:42,110 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 176 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:40:42,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 82 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:40:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-26 00:40:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2022-11-26 00:40:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.320754716981132) internal successors, (70), 61 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) [2022-11-26 00:40:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-11-26 00:40:42,113 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 19 [2022-11-26 00:40:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:40:42,113 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-11-26 00:40:42,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-26 00:40:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-11-26 00:40:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:40:42,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:40:42,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:40:42,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:40:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-26 00:40:42,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-26 00:40:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:40:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash -576689175, now seen corresponding path program 1 times [2022-11-26 00:40:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:40:42,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814306225] [2022-11-26 00:40:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:40:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:42,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:40:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814306225] [2022-11-26 00:40:42,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814306225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:40:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730831691] [2022-11-26 00:40:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:40:42,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:40:42,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:40:42,938 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:40:42,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b879dfea-04b9-44c7-8aaa-27a968912b37/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:40:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:40:43,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-26 00:40:43,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:40:43,100 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 [2022-11-26 00:40:43,110 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:40:43,110 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 [2022-11-26 00:40:43,167 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 [2022-11-26 00:40:43,172 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 [2022-11-26 00:40:43,281 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:40:43,281 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-26 00:40:43,286 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 7 treesize of output 3 [2022-11-26 00:40:43,299 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:40:43,299 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-26 00:40:43,342 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:40:43,342 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 38 treesize of output 37 [2022-11-26 00:40:43,349 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 18 treesize of output 20 [2022-11-26 00:40:43,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:43,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-26 00:40:43,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:43,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:43,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2022-11-26 00:40:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:43,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:40:44,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:44,040 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 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-26 00:40:44,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:44,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-26 00:40:44,057 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 11 treesize of output 7 [2022-11-26 00:40:44,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:44,100 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 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-26 00:40:44,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:44,112 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 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-26 00:40:44,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:44,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-26 00:40:44,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-26 00:40:44,236 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 00:40:44,236 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 13 treesize of output 12 [2022-11-26 00:40:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:40:44,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730831691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:40:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777404150] [2022-11-26 00:40:44,363 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-26 00:40:44,363 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:40:44,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:40:44,363 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:40:44,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:40:44,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,384 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 [2022-11-26 00:40:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-26 00:40:44,450 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 15 treesize of output 1 [2022-11-26 00:40:44,456 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 15 treesize of output 1 [2022-11-26 00:40:44,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-26 00:40:44,489 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 [2022-11-26 00:40:44,499 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 [2022-11-26 00:40:44,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,510 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 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:40:44,581 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-26 00:40:44,582 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 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-26 00:40:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,595 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 138 treesize of output 78 [2022-11-26 00:40:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-26 00:40:44,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,654 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 33 treesize of output 38 [2022-11-26 00:40:44,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,690 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:40:44,691 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 1 case distinctions, treesize of input 48 treesize of output 41 [2022-11-26 00:40:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,702 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 136 treesize of output 87 [2022-11-26 00:40:44,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:44,718 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 [2022-11-26 00:40:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:45,124 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-26 00:40:45,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 517 treesize of output 514 [2022-11-26 00:40:45,202 INFO L321 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2022-11-26 00:40:45,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 411 [2022-11-26 00:40:45,269 INFO L321 Elim1Store]: treesize reduction 100, result has 18.7 percent of original size [2022-11-26 00:40:45,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 453 [2022-11-26 00:40:45,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:45,383 INFO L321 Elim1Store]: treesize reduction 202, result has 20.2 percent of original size [2022-11-26 00:40:45,383 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 9 case distinctions, treesize of input 515 treesize of output 521 [2022-11-26 00:40:45,644 INFO L321 Elim1Store]: treesize reduction 84, result has 25.7 percent of original size [2022-11-26 00:40:45,645 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 772 treesize of output 487 [2022-11-26 00:40:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:45,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:45,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:45,727 INFO L321 Elim1Store]: treesize reduction 211, result has 8.3 percent of original size [2022-11-26 00:40:45,727 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 623 treesize of output 607 [2022-11-26 00:40:45,823 INFO L321 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2022-11-26 00:40:45,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 641 treesize of output 602 [2022-11-26 00:40:46,031 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 11 treesize of output 7 [2022-11-26 00:40:46,108 INFO L321 Elim1Store]: treesize reduction 44, result has 51.6 percent of original size [2022-11-26 00:40:46,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 100 treesize of output 121 [2022-11-26 00:40:46,183 INFO L321 Elim1Store]: treesize reduction 44, result has 51.6 percent of original size [2022-11-26 00:40:46,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 90 treesize of output 111 [2022-11-26 00:40:46,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:46,231 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-26 00:40:46,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 78 treesize of output 94 [2022-11-26 00:40:46,312 INFO L321 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2022-11-26 00:40:46,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 case distinctions, treesize of input 77 treesize of output 111 [2022-11-26 00:40:53,398 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 796 DAG size of output: 548 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-26 00:40:53,400 INFO L321 Elim1Store]: treesize reduction 846, result has 55.3 percent of original size [2022-11-26 00:40:53,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 2 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 134 case distinctions, treesize of input 676 treesize of output 1640 [2022-11-26 00:40:54,191 INFO L217 Elim1Store]: Index analysis took 626 ms [2022-11-26 00:41:09,124 WARN L233 SmtUtils]: Spent 14.45s on a formula simplification. DAG size of input: 1068 DAG size of output: 928 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-26 00:41:09,128 INFO L321 Elim1Store]: treesize reduction 498, result has 80.4 percent of original size [2022-11-26 00:41:09,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 2 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 189 case distinctions, treesize of input 594 treesize of output 2543