./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba --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 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- 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-b5237d8 [2022-11-22 01:55:44,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:55:44,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:55:44,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:55:44,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:55:44,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:55:44,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:55:44,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:55:44,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:55:44,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:55:44,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:55:44,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:55:44,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:55:44,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:55:44,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:55:44,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:55:44,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:55:44,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:55:44,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:55:44,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:55:44,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:55:44,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:55:44,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:55:44,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:55:44,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:55:44,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:55:44,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:55:44,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:55:44,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:55:44,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:55:44,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:55:44,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:55:44,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:55:44,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:55:44,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:55:44,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:55:44,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:55:44,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:55:44,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:55:44,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:55:44,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:55:44,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:55:44,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:55:44,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:55:44,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:55:44,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:55:44,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:55:44,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:55:44,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:55:44,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:55:44,857 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:55:44,857 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:55:44,858 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:55:44,858 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:55:44,858 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:55:44,858 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:55:44,859 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:55:44,859 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:55:44,859 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:55:44,859 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:55:44,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:55:44,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:55:44,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:55:44,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:55:44,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:55:44,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:55:44,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:55:44,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:55:44,862 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:55:44,862 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:55:44,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:55:44,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:55:44,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:55:44,863 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:55:44,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:55:44,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:55:44,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:55:44,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:55:44,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:55:44,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:55:44,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:55:44,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:55:44,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:55:44,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:55:44,866 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_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2022-11-22 01:55:45,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:55:45,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:55:45,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:55:45,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:55:45,196 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:55:45,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-22 01:55:48,246 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:55:48,546 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:55:48,546 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-22 01:55:48,566 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/data/a60e9b3d1/527bc86d093a42449cec604a750121e1/FLAG5a4f17563 [2022-11-22 01:55:48,832 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/data/a60e9b3d1/527bc86d093a42449cec604a750121e1 [2022-11-22 01:55:48,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:55:48,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:55:48,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:55:48,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:55:48,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:55:48,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:55:48" (1/1) ... [2022-11-22 01:55:48,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dff5722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:48, skipping insertion in model container [2022-11-22 01:55:48,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:55:48" (1/1) ... [2022-11-22 01:55:48,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:55:48,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:55:49,186 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_8299d28f-9cfb-4858-8b3f-4d1857278e9d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-22 01:55:49,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:55:49,199 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:55:49,240 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_8299d28f-9cfb-4858-8b3f-4d1857278e9d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-22 01:55:49,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:55:49,268 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:55:49,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49 WrapperNode [2022-11-22 01:55:49,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:55:49,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:55:49,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:55:49,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:55:49,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,327 INFO L138 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2022-11-22 01:55:49,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:55:49,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:55:49,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:55:49,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:55:49,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:55:49,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:55:49,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:55:49,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:55:49,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (1/1) ... [2022-11-22 01:55:49,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:55:49,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:55:49,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:55:49,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:55:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-22 01:55:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-22 01:55:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:55:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:55:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:55:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:55:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:55:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:55:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:55:49,627 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:55:49,629 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:55:49,673 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-22 01:55:50,114 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:55:50,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:55:50,198 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:55:50,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:55:50 BoogieIcfgContainer [2022-11-22 01:55:50,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:55:50,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:55:50,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:55:50,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:55:50,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:55:48" (1/3) ... [2022-11-22 01:55:50,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b87f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:55:50, skipping insertion in model container [2022-11-22 01:55:50,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:55:49" (2/3) ... [2022-11-22 01:55:50,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b87f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:55:50, skipping insertion in model container [2022-11-22 01:55:50,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:55:50" (3/3) ... [2022-11-22 01:55:50,211 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2022-11-22 01:55:50,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:55:50,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-22 01:55:50,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:55:50,280 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;@4311b75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:55:50,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-22 01:55:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 36 states have (on average 2.388888888888889) internal successors, (86), 78 states have internal predecessors, (86), 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) [2022-11-22 01:55:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:55:50,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:50,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:55:50,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 6153029, now seen corresponding path program 1 times [2022-11-22 01:55:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493801438] [2022-11-22 01:55:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:50,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:50,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:50,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493801438] [2022-11-22 01:55:50,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493801438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:55:50,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:55:50,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:55:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678707638] [2022-11-22 01:55:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:55:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:55:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:55:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:50,572 INFO L87 Difference]: Start difference. First operand has 80 states, 36 states have (on average 2.388888888888889) internal successors, (86), 78 states have internal predecessors, (86), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:50,746 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2022-11-22 01:55:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:55:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:55:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:50,756 INFO L225 Difference]: With dead ends: 135 [2022-11-22 01:55:50,757 INFO L226 Difference]: Without dead ends: 129 [2022-11-22 01:55:50,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:50,762 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 72 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:50,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 122 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:55:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-22 01:55:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 72. [2022-11-22 01:55:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 34 states have (on average 2.264705882352941) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-11-22 01:55:50,799 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 4 [2022-11-22 01:55:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:50,800 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-11-22 01:55:50,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-11-22 01:55:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:55:50,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:50,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:55:50,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:55:50,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 6153030, now seen corresponding path program 1 times [2022-11-22 01:55:50,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:50,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704436242] [2022-11-22 01:55:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:50,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:50,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704436242] [2022-11-22 01:55:50,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704436242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:55:50,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:55:50,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:55:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707188493] [2022-11-22 01:55:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:55:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:55:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:55:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:50,916 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:51,094 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2022-11-22 01:55:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:55:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:55:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:51,102 INFO L225 Difference]: With dead ends: 128 [2022-11-22 01:55:51,104 INFO L226 Difference]: Without dead ends: 128 [2022-11-22 01:55:51,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:51,106 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 70 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:51,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 117 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:55:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-22 01:55:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 69. [2022-11-22 01:55:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 34 states have (on average 2.176470588235294) internal successors, (74), 68 states have internal predecessors, (74), 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) [2022-11-22 01:55:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-11-22 01:55:51,123 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 4 [2022-11-22 01:55:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:51,124 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-11-22 01:55:51,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-11-22 01:55:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:55:51,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:51,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:55:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:55:51,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash 6311657, now seen corresponding path program 1 times [2022-11-22 01:55:51,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:51,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495571589] [2022-11-22 01:55:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:51,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495571589] [2022-11-22 01:55:51,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495571589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:55:51,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:55:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:55:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523844253] [2022-11-22 01:55:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:55:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:55:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:55:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:51,254 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:51,292 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2022-11-22 01:55:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:55:51,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:55:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:51,294 INFO L225 Difference]: With dead ends: 79 [2022-11-22 01:55:51,294 INFO L226 Difference]: Without dead ends: 79 [2022-11-22 01:55:51,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:51,301 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 10 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:51,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:55:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-22 01:55:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-11-22 01:55:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 35 states have (on average 2.142857142857143) internal successors, (75), 69 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) [2022-11-22 01:55:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2022-11-22 01:55:51,320 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 4 [2022-11-22 01:55:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:51,320 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2022-11-22 01:55:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2022-11-22 01:55:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:55:51,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:51,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:55:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:55:51,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash 209673289, now seen corresponding path program 1 times [2022-11-22 01:55:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:51,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510158233] [2022-11-22 01:55:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:51,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:51,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510158233] [2022-11-22 01:55:51,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510158233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:55:51,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:55:51,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:55:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788166111] [2022-11-22 01:55:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:55:51,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:55:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:55:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:51,441 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:51,498 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-22 01:55:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:55:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:55:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:51,501 INFO L225 Difference]: With dead ends: 76 [2022-11-22 01:55:51,501 INFO L226 Difference]: Without dead ends: 76 [2022-11-22 01:55:51,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:55:51,502 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:51,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:55:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-22 01:55:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-11-22 01:55:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 40 states have (on average 2.0) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-11-22 01:55:51,508 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 8 [2022-11-22 01:55:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:51,508 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-11-22 01:55:51,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-11-22 01:55:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:55:51,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:51,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:55:51,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:55:51,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:51,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1499445486, now seen corresponding path program 1 times [2022-11-22 01:55:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:51,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2714284] [2022-11-22 01:55:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:51,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2714284] [2022-11-22 01:55:51,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2714284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:55:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57530041] [2022-11-22 01:55:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:51,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:55:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:55:51,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:55:51,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:55:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:51,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:55:51,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:55:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:51,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:55:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:51,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57530041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:55:51,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357466132] [2022-11-22 01:55:52,011 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:55:52,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:55:52,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:55:52,027 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:55:52,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:55:52,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,137 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 [2022-11-22 01:55:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-22 01:55:52,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:55:52,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:55:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:55:52,337 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 [2022-11-22 01:55:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,359 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 [2022-11-22 01:55:52,380 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 [2022-11-22 01:55:52,429 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 [2022-11-22 01:55:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,457 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 [2022-11-22 01:55:52,477 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 [2022-11-22 01:55:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-22 01:55:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:55:52,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:55:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:55:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:55:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:55:52,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:55:52,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:52,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:52,990 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 01:55:52,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-22 01:55:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,067 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 01:55:53,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-22 01:55:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,121 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 01:55:53,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-22 01:55:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-22 01:55:53,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:55:53,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:55:53,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:55:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:55:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:55:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:55:53,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,704 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 01:55:53,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 395 treesize of output 376 [2022-11-22 01:55:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,749 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 01:55:53,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-22 01:55:53,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,798 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 01:55:53,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-11-22 01:55:54,221 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-22 01:55:54,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 313 treesize of output 320 [2022-11-22 01:55:54,656 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-22 01:55:54,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 392 treesize of output 389 [2022-11-22 01:55:54,707 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-22 01:55:54,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-22 01:55:54,751 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-22 01:55:54,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-22 01:55:54,842 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:55:58,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [357466132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:55:58,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:55:58,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-22 01:55:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844385246] [2022-11-22 01:55:58,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:55:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:55:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:55:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:55:58,227 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:59,286 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2022-11-22 01:55:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:55:59,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:55:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:59,289 INFO L225 Difference]: With dead ends: 86 [2022-11-22 01:55:59,289 INFO L226 Difference]: Without dead ends: 86 [2022-11-22 01:55:59,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:55:59,290 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 109 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:55:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-22 01:55:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-11-22 01:55:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.872340425531915) internal successors, (88), 81 states have internal predecessors, (88), 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) [2022-11-22 01:55:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-11-22 01:55:59,296 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 11 [2022-11-22 01:55:59,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:59,296 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-11-22 01:55:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-11-22 01:55:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:55:59,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:59,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:55:59,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:55:59,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:55:59,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:55:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1543488562, now seen corresponding path program 1 times [2022-11-22 01:55:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:55:59,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205517326] [2022-11-22 01:55:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:55:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:59,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:59,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205517326] [2022-11-22 01:55:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205517326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:55:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832447318] [2022-11-22 01:55:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:55:59,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:55:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:55:59,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:55:59,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:55:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 01:55:59,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:55:59,807 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 [2022-11-22 01:55:59,845 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:55:59,846 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 [2022-11-22 01:55:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:59,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832447318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312348195] [2022-11-22 01:56:00,013 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:56:00,013 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:00,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:00,013 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:00,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:00,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,044 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 [2022-11-22 01:56:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-22 01:56:00,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:00,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:00,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:00,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,168 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 [2022-11-22 01:56:00,186 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 [2022-11-22 01:56:00,196 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 [2022-11-22 01:56:00,232 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 [2022-11-22 01:56:00,248 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 [2022-11-22 01:56:00,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,263 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 [2022-11-22 01:56:00,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:56:00,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:00,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:00,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:00,609 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 01:56:00,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-22 01:56:00,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:00,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:00,662 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:56:00,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-22 01:56:00,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:00,700 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:56:00,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-22 01:56:00,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:56:00,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:00,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:00,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:00,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:01,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:01,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:01,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:01,133 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:56:01,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-22 01:56:01,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:01,165 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 01:56:01,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-11-22 01:56:01,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:01,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:01,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:01,202 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:56:01,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 380 [2022-11-22 01:56:01,545 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-22 01:56:01,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 310 treesize of output 317 [2022-11-22 01:56:01,857 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-22 01:56:01,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 392 treesize of output 389 [2022-11-22 01:56:01,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:01,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-22 01:56:01,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:01,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 396 treesize of output 387 [2022-11-22 01:56:01,983 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:05,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1312348195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:05,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:56:05,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-22 01:56:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936096650] [2022-11-22 01:56:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:05,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:56:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:56:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:56:05,814 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:07,103 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2022-11-22 01:56:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:56:07,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:56:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:07,104 INFO L225 Difference]: With dead ends: 84 [2022-11-22 01:56:07,104 INFO L226 Difference]: Without dead ends: 84 [2022-11-22 01:56:07,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:56:07,105 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 119 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:56:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-22 01:56:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-11-22 01:56:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 82 states have internal predecessors, (89), 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) [2022-11-22 01:56:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-11-22 01:56:07,113 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 15 [2022-11-22 01:56:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:07,113 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-11-22 01:56:07,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-11-22 01:56:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:56:07,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:07,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:07,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:56:07,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash -288796838, now seen corresponding path program 1 times [2022-11-22 01:56:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:07,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788780272] [2022-11-22 01:56:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:07,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:07,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788780272] [2022-11-22 01:56:07,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788780272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:07,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:07,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:56:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121686439] [2022-11-22 01:56:07,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:07,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:56:07,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:56:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:56:07,432 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-22 01:56:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:07,492 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2022-11-22 01:56:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:56:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 [2022-11-22 01:56:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:07,493 INFO L225 Difference]: With dead ends: 90 [2022-11-22 01:56:07,493 INFO L226 Difference]: Without dead ends: 90 [2022-11-22 01:56:07,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:56:07,494 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:07,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 47 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-22 01:56:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2022-11-22 01:56:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 79 states have internal predecessors, (86), 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) [2022-11-22 01:56:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-11-22 01:56:07,518 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 19 [2022-11-22 01:56:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:07,519 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-11-22 01:56:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-22 01:56:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-11-22 01:56:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:56:07,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:07,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:56:07,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -288796837, now seen corresponding path program 1 times [2022-11-22 01:56:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248031394] [2022-11-22 01:56:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:07,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:07,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248031394] [2022-11-22 01:56:07,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248031394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:07,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:07,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:56:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563594658] [2022-11-22 01:56:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:07,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:56:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:56:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:56:07,622 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-22 01:56:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:07,676 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-11-22 01:56:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:56:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 [2022-11-22 01:56:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:07,678 INFO L225 Difference]: With dead ends: 77 [2022-11-22 01:56:07,678 INFO L226 Difference]: Without dead ends: 77 [2022-11-22 01:56:07,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:56:07,680 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:07,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 43 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-22 01:56:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-22 01:56:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2022-11-22 01:56:07,688 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 19 [2022-11-22 01:56:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:07,689 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2022-11-22 01:56:07,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-22 01:56:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2022-11-22 01:56:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:56:07,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:07,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:56:07,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash -727074723, now seen corresponding path program 1 times [2022-11-22 01:56:07,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:07,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430018814] [2022-11-22 01:56:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:07,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:08,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430018814] [2022-11-22 01:56:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430018814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:56:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86906788] [2022-11-22 01:56:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:08,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:08,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:56:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:08,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 01:56:08,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:08,229 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 [2022-11-22 01:56:08,245 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:56:08,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-22 01:56:08,323 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:56:08,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-22 01:56:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:56:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:08,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:08,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86906788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:08,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061960682] [2022-11-22 01:56:08,887 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 01:56:08,887 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:08,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:08,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:08,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:08,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,908 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 [2022-11-22 01:56:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-22 01:56:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:08,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:08,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:08,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:09,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,012 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 [2022-11-22 01:56:09,022 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 [2022-11-22 01:56:09,034 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 [2022-11-22 01:56:09,058 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 [2022-11-22 01:56:09,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,071 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 [2022-11-22 01:56:09,085 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 [2022-11-22 01:56:09,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:56:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:09,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:09,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:09,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-22 01:56:09,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:09,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-22 01:56:09,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:56:09,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:09,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:56:09,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-22 01:56:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:09,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:56:09,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:56:09,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:09,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:09,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:10,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-22 01:56:10,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,092 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 41 treesize of output 46 [2022-11-22 01:56:10,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-22 01:56:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:10,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-22 01:56:10,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:56:10,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:56:10,529 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 19 treesize of output 1 [2022-11-22 01:56:10,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:56:10,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,571 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 21 treesize of output 20 [2022-11-22 01:56:10,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:10,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:56:10,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:10,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:56:10,646 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 19 treesize of output 1 [2022-11-22 01:56:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,704 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-22 01:56:10,705 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 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-22 01:56:10,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,743 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-22 01:56:10,743 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 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-22 01:56:10,766 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 [2022-11-22 01:56:10,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:56:10,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:56:10,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:10,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:10,868 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 [2022-11-22 01:56:10,941 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 [2022-11-22 01:56:10,950 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 [2022-11-22 01:56:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,982 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:10,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-22 01:56:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,092 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:11,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 216 [2022-11-22 01:56:11,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-22 01:56:11,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-22 01:56:11,182 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:15,080 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1778#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_int| |ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset|) |ULTIMATE.start_node_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1) (= |ULTIMATE.start_dll_prepend_#in~head#1.offset| |ULTIMATE.start_dll_prepend_~head#1.offset|) (= |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (= |ULTIMATE.start_main_~data~0#1| |ULTIMATE.start_dll_prepend_#in~data#1|) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (= |ULTIMATE.start_dll_prepend_#in~head#1.base| |ULTIMATE.start_dll_prepend_~head#1.base|) (= 12 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (= |ULTIMATE.start_dll_prepend_#in~data#1| |ULTIMATE.start_dll_prepend_~data#1|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_node_create_#in~data#1| |ULTIMATE.start_dll_prepend_~data#1|) (= |ULTIMATE.start_node_create_#res#1.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (= |ULTIMATE.start_dll_prepend_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_prepend_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |#StackHeapBarrier|) (not (= (select |#valid| |ULTIMATE.start_dll_prepend_~head#1.base|) 1)) (= |ULTIMATE.start_dll_prepend_~new_head~1#1.base| |ULTIMATE.start_node_create_#res#1.base|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (not (= |ULTIMATE.start_node_create_~temp~0#1.base| 0)) (= |#NULL.base| 0))' at error location [2022-11-22 01:56:15,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:15,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:56:15,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-11-22 01:56:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418690784] [2022-11-22 01:56:15,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:15,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 01:56:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 01:56:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:56:15,082 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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) [2022-11-22 01:56:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:15,224 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2022-11-22 01:56:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:56:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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 22 [2022-11-22 01:56:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:15,225 INFO L225 Difference]: With dead ends: 81 [2022-11-22 01:56:15,225 INFO L226 Difference]: Without dead ends: 81 [2022-11-22 01:56:15,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:56:15,226 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 294 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:15,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 54 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-22 01:56:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-11-22 01:56:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-11-22 01:56:15,229 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 22 [2022-11-22 01:56:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:15,229 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-11-22 01:56:15,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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) [2022-11-22 01:56:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-11-22 01:56:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:56:15,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:15,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:15,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:15,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash -727074722, now seen corresponding path program 1 times [2022-11-22 01:56:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:15,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389820705] [2022-11-22 01:56:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:15,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:15,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:15,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389820705] [2022-11-22 01:56:15,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389820705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:56:15,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838203437] [2022-11-22 01:56:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:15,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:15,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:56:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:16,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-22 01:56:16,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:16,132 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 [2022-11-22 01:56:16,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:16,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:56:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:16,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:56:16,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:16,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:56:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:16,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:56:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838203437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:16,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:56:16,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-22 01:56:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946416434] [2022-11-22 01:56:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:16,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:56:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:56:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:56:16,291 INFO L87 Difference]: Start difference. First operand 71 states and 77 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) [2022-11-22 01:56:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:16,370 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-11-22 01:56:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:56:16,371 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 22 [2022-11-22 01:56:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:16,371 INFO L225 Difference]: With dead ends: 65 [2022-11-22 01:56:16,371 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 01:56:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:56:16,372 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:16,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 01:56:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-22 01:56:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 64 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) [2022-11-22 01:56:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2022-11-22 01:56:16,377 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 22 [2022-11-22 01:56:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:16,377 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2022-11-22 01:56:16,377 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) [2022-11-22 01:56:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2022-11-22 01:56:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:56:16,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:16,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:56:16,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:56:16,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1532969926, now seen corresponding path program 1 times [2022-11-22 01:56:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:16,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114539429] [2022-11-22 01:56:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:16,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114539429] [2022-11-22 01:56:16,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114539429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:56:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029351423] [2022-11-22 01:56:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:16,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:16,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:56:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:56:16,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:16,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:56:16,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029351423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:16,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:56:16,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-22 01:56:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836719481] [2022-11-22 01:56:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:56:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:56:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:16,884 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:16,911 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-11-22 01:56:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:56:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:56:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:16,915 INFO L225 Difference]: With dead ends: 59 [2022-11-22 01:56:16,915 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 01:56:16,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:16,916 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 91 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:16,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 62 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:56:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 01:56:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-22 01:56:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 56 states have internal predecessors, (60), 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) [2022-11-22 01:56:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-11-22 01:56:16,930 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 23 [2022-11-22 01:56:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:16,931 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-11-22 01:56:16,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-11-22 01:56:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:56:16,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:16,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:16,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:17,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:17,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1064479892, now seen corresponding path program 1 times [2022-11-22 01:56:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:17,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315191860] [2022-11-22 01:56:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:17,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:17,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315191860] [2022-11-22 01:56:17,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315191860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:17,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:17,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:56:17,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135417954] [2022-11-22 01:56:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:56:17,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:17,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:56:17,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:56:17,224 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:17,288 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-11-22 01:56:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:56:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:56:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:17,289 INFO L225 Difference]: With dead ends: 66 [2022-11-22 01:56:17,289 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 01:56:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:56:17,291 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 71 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 47 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 01:56:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-11-22 01:56:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 55 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) [2022-11-22 01:56:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-11-22 01:56:17,293 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 23 [2022-11-22 01:56:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:17,294 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-11-22 01:56:17,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-11-22 01:56:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:56:17,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:17,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:17,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:56:17,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1064479891, now seen corresponding path program 1 times [2022-11-22 01:56:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:17,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519074299] [2022-11-22 01:56:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:17,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:17,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519074299] [2022-11-22 01:56:17,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519074299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:17,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:17,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:56:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127534132] [2022-11-22 01:56:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:56:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:56:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:56:17,466 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:17,524 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-11-22 01:56:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:56:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:56:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:17,526 INFO L225 Difference]: With dead ends: 55 [2022-11-22 01:56:17,526 INFO L226 Difference]: Without dead ends: 55 [2022-11-22 01:56:17,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:17,527 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:17,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:56:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-22 01:56:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-22 01:56:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.380952380952381) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-11-22 01:56:17,529 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 23 [2022-11-22 01:56:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:17,529 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-11-22 01:56:17,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-11-22 01:56:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:56:17,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:17,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:56:17,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1329740313, now seen corresponding path program 1 times [2022-11-22 01:56:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:17,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130388584] [2022-11-22 01:56:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:17,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130388584] [2022-11-22 01:56:17,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130388584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:17,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:17,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:56:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113684] [2022-11-22 01:56:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:56:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:56:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:56:17,954 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:18,233 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-11-22 01:56:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:56:18,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-22 01:56:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:18,234 INFO L225 Difference]: With dead ends: 65 [2022-11-22 01:56:18,234 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 01:56:18,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:56:18,235 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:18,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 71 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:56:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 01:56:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2022-11-22 01:56:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 53 states have internal predecessors, (57), 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) [2022-11-22 01:56:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-11-22 01:56:18,237 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 27 [2022-11-22 01:56:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:18,237 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-11-22 01:56:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-11-22 01:56:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:56:18,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:18,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:18,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:56:18,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1329740314, now seen corresponding path program 1 times [2022-11-22 01:56:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:18,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581399935] [2022-11-22 01:56:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:18,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:18,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581399935] [2022-11-22 01:56:18,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581399935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:18,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:56:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073124946] [2022-11-22 01:56:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:18,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:56:18,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:56:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:56:18,784 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:18,981 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-11-22 01:56:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:56:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-22 01:56:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:18,982 INFO L225 Difference]: With dead ends: 54 [2022-11-22 01:56:18,982 INFO L226 Difference]: Without dead ends: 54 [2022-11-22 01:56:18,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:56:18,983 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 138 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:18,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 53 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-22 01:56:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-11-22 01:56:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 52 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) [2022-11-22 01:56:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-11-22 01:56:18,985 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 27 [2022-11-22 01:56:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:18,986 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-11-22 01:56:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-11-22 01:56:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:56:18,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:18,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:56:18,987 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2008737315, now seen corresponding path program 1 times [2022-11-22 01:56:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:18,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978482238] [2022-11-22 01:56:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:19,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:19,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978482238] [2022-11-22 01:56:19,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978482238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:19,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:19,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:56:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475081152] [2022-11-22 01:56:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:56:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:56:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:19,191 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:19,298 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2022-11-22 01:56:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:56:19,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-22 01:56:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:19,299 INFO L225 Difference]: With dead ends: 79 [2022-11-22 01:56:19,299 INFO L226 Difference]: Without dead ends: 79 [2022-11-22 01:56:19,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:56:19,300 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 163 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:19,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 72 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-22 01:56:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 54. [2022-11-22 01:56:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 53 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) [2022-11-22 01:56:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-11-22 01:56:19,302 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 29 [2022-11-22 01:56:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:19,302 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-11-22 01:56:19,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-11-22 01:56:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:56:19,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:19,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:19,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:56:19,303 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2008737314, now seen corresponding path program 1 times [2022-11-22 01:56:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938224922] [2022-11-22 01:56:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:19,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938224922] [2022-11-22 01:56:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938224922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:19,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:19,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:56:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833367333] [2022-11-22 01:56:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:56:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:56:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:19,660 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:19,803 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2022-11-22 01:56:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:56:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-22 01:56:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:19,805 INFO L225 Difference]: With dead ends: 72 [2022-11-22 01:56:19,805 INFO L226 Difference]: Without dead ends: 72 [2022-11-22 01:56:19,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:56:19,805 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 165 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:19,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 62 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-22 01:56:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2022-11-22 01:56:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 54 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) [2022-11-22 01:56:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-22 01:56:19,808 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 29 [2022-11-22 01:56:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:19,808 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-22 01:56:19,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-22 01:56:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:56:19,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:19,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:56:19,809 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2141241893, now seen corresponding path program 1 times [2022-11-22 01:56:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:19,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973786265] [2022-11-22 01:56:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:56:20,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:20,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973786265] [2022-11-22 01:56:20,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973786265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:20,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:20,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:56:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39328174] [2022-11-22 01:56:20,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:20,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:56:20,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:56:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:20,029 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:20,127 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2022-11-22 01:56:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:56:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:56:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:20,128 INFO L225 Difference]: With dead ends: 58 [2022-11-22 01:56:20,128 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 01:56:20,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:56:20,128 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:20,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 82 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 01:56:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-11-22 01:56:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 45 states have (on average 1.288888888888889) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-11-22 01:56:20,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 30 [2022-11-22 01:56:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:20,131 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-11-22 01:56:20,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-11-22 01:56:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-22 01:56:20,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:20,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:56:20,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash -512026756, now seen corresponding path program 1 times [2022-11-22 01:56:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965371860] [2022-11-22 01:56:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:20,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:20,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965371860] [2022-11-22 01:56:20,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965371860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:20,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:20,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:56:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126956102] [2022-11-22 01:56:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:20,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:56:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:56:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:56:20,458 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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) [2022-11-22 01:56:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:20,653 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-11-22 01:56:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:56:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2022-11-22 01:56:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:20,654 INFO L225 Difference]: With dead ends: 55 [2022-11-22 01:56:20,654 INFO L226 Difference]: Without dead ends: 55 [2022-11-22 01:56:20,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:56:20,655 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 95 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:20,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 59 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:56:20,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-22 01:56:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-22 01:56:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 54 states have internal predecessors, (57), 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) [2022-11-22 01:56:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-11-22 01:56:20,657 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 32 [2022-11-22 01:56:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:20,657 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-11-22 01:56:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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) [2022-11-22 01:56:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-11-22 01:56:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:56:20,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:20,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:20,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:56:20,658 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -211100282, now seen corresponding path program 1 times [2022-11-22 01:56:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:20,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298587558] [2022-11-22 01:56:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:56:21,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:21,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298587558] [2022-11-22 01:56:21,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298587558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:21,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:21,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 01:56:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385688921] [2022-11-22 01:56:21,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:21,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:56:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:56:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:56:21,613 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2022-11-22 01:56:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:22,171 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2022-11-22 01:56:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:56:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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 34 [2022-11-22 01:56:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:22,172 INFO L225 Difference]: With dead ends: 66 [2022-11-22 01:56:22,172 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 01:56:22,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:56:22,173 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:22,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 82 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:56:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 01:56:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-11-22 01:56:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2022-11-22 01:56:22,175 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 34 [2022-11-22 01:56:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:22,175 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2022-11-22 01:56:22,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2022-11-22 01:56:22,175 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2022-11-22 01:56:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:56:22,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:22,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:22,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 01:56:22,176 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:56:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2045826363, now seen corresponding path program 1 times [2022-11-22 01:56:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:22,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968212004] [2022-11-22 01:56:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:56:23,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968212004] [2022-11-22 01:56:23,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968212004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:56:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343980128] [2022-11-22 01:56:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:23,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:23,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:23,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:23,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:56:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:23,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-22 01:56:23,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:23,677 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 [2022-11-22 01:56:23,799 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 01:56:23,800 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 15 treesize of output 15 [2022-11-22 01:56:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:23,862 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 15 treesize of output 17 [2022-11-22 01:56:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:23,884 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 15 treesize of output 17 [2022-11-22 01:56:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:23,909 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 15 treesize of output 17 [2022-11-22 01:56:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:24,020 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 01:56:24,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:24,206 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-22 01:56:24,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 49 [2022-11-22 01:56:24,220 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-22 01:56:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:24,338 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 0 case distinctions, treesize of input 55 treesize of output 38 [2022-11-22 01:56:24,356 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 [2022-11-22 01:56:24,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:56:24,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:24,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:24,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 24 [2022-11-22 01:56:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:24,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:24,615 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 114 treesize of output 106 [2022-11-22 01:56:34,850 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:56:34,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:34,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 220 [2022-11-22 01:56:43,312 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 6074 treesize of output 5416 [2022-11-22 01:56:43,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:43,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5536 treesize of output 4876 [2022-11-22 01:56:43,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:43,641 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 5458 treesize of output 5220 [2022-11-22 01:56:43,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:43,747 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 7242 treesize of output 6506 [2022-11-22 01:56:54,256 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 10 treesize of output 8 [2022-11-22 01:56:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:56:54,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343980128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:54,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763559916] [2022-11-22 01:56:54,311 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-22 01:56:54,311 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:54,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:54,312 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:54,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:54,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,344 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 [2022-11-22 01:56:54,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-22 01:56:54,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:54,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:54,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:54,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,438 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 [2022-11-22 01:56:54,450 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 [2022-11-22 01:56:54,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 01:56:54,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,481 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 [2022-11-22 01:56:54,493 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 [2022-11-22 01:56:54,505 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 [2022-11-22 01:56:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-22 01:56:54,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:54,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-22 01:56:54,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:56:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-22 01:56:54,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-22 01:56:54,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:54,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:56:54,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:54,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:56:54,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:54,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,242 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-22 01:56:55,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-22 01:56:55,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:56:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 01:56:55,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-22 01:56:55,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:55,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:55,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-22 01:56:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-22 01:56:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-22 01:56:55,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 01:56:55,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-22 01:56:55,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:56:55,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:56:55,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:55,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:55,740 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 [2022-11-22 01:56:55,748 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 [2022-11-22 01:56:55,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,759 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 [2022-11-22 01:56:55,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,788 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 [2022-11-22 01:56:55,795 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 [2022-11-22 01:56:55,804 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 [2022-11-22 01:56:55,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:55,845 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 01:56:55,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-22 01:56:55,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:55,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-22 01:56:55,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:55,879 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 01:56:55,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:55,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:56:55,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:56:55,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:55,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:56:55,977 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 [2022-11-22 01:56:55,989 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 [2022-11-22 01:56:55,996 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 [2022-11-22 01:56:56,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,004 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 [2022-11-22 01:56:56,020 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 [2022-11-22 01:56:56,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,030 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 [2022-11-22 01:56:56,040 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 [2022-11-22 01:56:56,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,076 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 01:56:56,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 01:56:56,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,099 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 01:56:56,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-11-22 01:56:56,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-22 01:56:56,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:56:56,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:56:56,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,248 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 21 treesize of output 20 [2022-11-22 01:56:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,267 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 21 treesize of output 20 [2022-11-22 01:56:56,281 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 19 treesize of output 1 [2022-11-22 01:56:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:56,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:56:56,333 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 19 treesize of output 1 [2022-11-22 01:56:56,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:56,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:56:56,392 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 [2022-11-22 01:56:56,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,423 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-22 01:56:56,423 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 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-22 01:56:56,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,468 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-22 01:56:56,468 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 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-22 01:56:56,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:56,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 39 [2022-11-22 01:56:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,583 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 [2022-11-22 01:56:56,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:56,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:56,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 39 [2022-11-22 01:56:56,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,789 INFO L321 Elim1Store]: treesize reduction 96, result has 28.4 percent of original size [2022-11-22 01:56:56,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 166 treesize of output 140 [2022-11-22 01:56:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:56,904 INFO L321 Elim1Store]: treesize reduction 82, result has 38.8 percent of original size [2022-11-22 01:56:56,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 181 treesize of output 175 [2022-11-22 01:56:56,953 INFO L321 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2022-11-22 01:56:56,953 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 39 treesize of output 25 [2022-11-22 01:56:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,123 INFO L321 Elim1Store]: treesize reduction 120, result has 21.6 percent of original size [2022-11-22 01:56:57,124 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 6 new quantified variables, introduced 11 case distinctions, treesize of input 333 treesize of output 280 [2022-11-22 01:56:57,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:57,171 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-22 01:56:57,173 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 320 treesize of output 308 [2022-11-22 01:56:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:57,261 INFO L321 Elim1Store]: treesize reduction 124, result has 32.2 percent of original size [2022-11-22 01:56:57,262 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 6 new quantified variables, introduced 11 case distinctions, treesize of input 317 treesize of output 314 [2022-11-22 01:56:57,704 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:56:57,709 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:02,432 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:02,436 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:09,008 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:09,012 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:10,469 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:10,471 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-22 01:57:12,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:57:12,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:57:12,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:57:12,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:57:12,187 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 [2022-11-22 01:57:12,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 01:57:12,210 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 [2022-11-22 01:57:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:12,221 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 [2022-11-22 01:57:12,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:12,243 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 [2022-11-22 01:57:12,252 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 [2022-11-22 01:57:12,262 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 [2022-11-22 01:57:12,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:57:22,607 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3773#(and (<= |ULTIMATE.start_dll_prepend_~data#1| 1) (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_dll_prepend_#in~head#1.offset| 0) (<= 1 |ULTIMATE.start_node_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_dll_prepend_#in~data#1|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_prepend_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_dll_prepend_~head#1.offset|) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_prepend_#in~head#1.base|) (<= |ULTIMATE.start_dll_prepend_~head#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_prepend_#in~head#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_dll_prepend_~head#1.base|) (<= 0 |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|) (<= 1 |ULTIMATE.start_node_create_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 0) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (<= |ULTIMATE.start_node_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= 1 |ULTIMATE.start_dll_prepend_~data#1|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_node_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|))' at error location [2022-11-22 01:57:22,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:57:22,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:57:22,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-11-22 01:57:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343223675] [2022-11-22 01:57:22,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:57:22,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-22 01:57:22,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:57:22,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-22 01:57:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3530, Unknown=10, NotChecked=0, Total=3782 [2022-11-22 01:57:22,615 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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) [2022-11-22 01:57:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:24,648 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2022-11-22 01:57:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 01:57:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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 35 [2022-11-22 01:57:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:24,649 INFO L225 Difference]: With dead ends: 85 [2022-11-22 01:57:24,649 INFO L226 Difference]: Without dead ends: 85 [2022-11-22 01:57:24,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=507, Invalid=5033, Unknown=10, NotChecked=0, Total=5550 [2022-11-22 01:57:24,652 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 488 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:24,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 209 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:57:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-22 01:57:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 58. [2022-11-22 01:57:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 57 states have internal predecessors, (62), 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) [2022-11-22 01:57:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-11-22 01:57:24,655 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 35 [2022-11-22 01:57:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:24,655 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-11-22 01:57:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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) [2022-11-22 01:57:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-11-22 01:57:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:57:24,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:24,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:24,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:57:24,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:24,863 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-22 01:57:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2045826364, now seen corresponding path program 1 times [2022-11-22 01:57:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:24,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775382970] [2022-11-22 01:57:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:57:27,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775382970] [2022-11-22 01:57:27,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775382970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:57:27,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726732600] [2022-11-22 01:57:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:27,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:27,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:27,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:27,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8299d28f-9cfb-4858-8b3f-4d1857278e9d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:57:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:27,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-22 01:57:27,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:57:27,451 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 [2022-11-22 01:57:27,611 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 01:57:27,612 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 15 treesize of output 15 [2022-11-22 01:57:27,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,695 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 15 treesize of output 17 [2022-11-22 01:57:27,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,704 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 14 treesize of output 16 [2022-11-22 01:57:27,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,726 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 15 treesize of output 17 [2022-11-22 01:57:27,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,736 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 14 treesize of output 16 [2022-11-22 01:57:27,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,762 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 [2022-11-22 01:57:27,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,770 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 15 treesize of output 17 [2022-11-22 01:57:27,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,926 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-22 01:57:27,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:27,937 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 01:57:28,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,214 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-22 01:57:28,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 63 [2022-11-22 01:57:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,237 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 01:57:28,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 49 [2022-11-22 01:57:28,256 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-11-22 01:57:28,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2022-11-22 01:57:28,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,496 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 0 case distinctions, treesize of input 86 treesize of output 69 [2022-11-22 01:57:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,503 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 0 case distinctions, treesize of input 86 treesize of output 65 [2022-11-22 01:57:28,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:28,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:57:28,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 40 [2022-11-22 01:57:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:28,699 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 01:57:28,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2022-11-22 01:57:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:57:28,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:57:29,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:57:29,099 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 190 treesize of output 194 [2022-11-22 01:57:29,170 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1742 (Array Int Int))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1742))) (store .cse3 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))))) (let ((.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_1743 (Array Int Int))) (<= 0 (+ 4 (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1743))) (store .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse2 4))))) (not (<= 0 .cse2)))))) (forall ((v_ArrVal_1742 (Array Int Int))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1742))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_1743 (Array Int Int))) (= |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1743))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ .cse6 4)))) (not (<= 0 .cse6))))) (forall ((v_ArrVal_1742 (Array Int Int))) (let ((.cse8 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1742))) (store .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))))) (let ((.cse10 (select (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_1743 (Array Int Int))) (< (select (select .cse8 (select (select (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1743))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse10 4)) (+ |c_ULTIMATE.start_dll_prepend_#t~mem10#1.offset| 5))) (not (<= 0 .cse10))))))) is different from false [2022-11-22 01:57:29,226 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (and (forall ((v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_1742))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse0)) (= (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_1743))) (store .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ .cse0 4)) .cse3)))) (forall ((v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int))) (let ((.cse6 (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_1742))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse5)) (< (select (select .cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_1743))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse5 4)) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) 5)))))) (forall ((v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int))) (let ((.cse10 (let ((.cse12 (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_1742))) (store .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse9)) (<= 0 (+ (select (select .cse10 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_1743))) (store .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse9 4)) 4)))))))) is different from false [2022-11-22 01:57:30,719 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (+ 4 |c_ULTIMATE.start_node_create_~temp~0#1.offset|))) (and (forall ((v_ArrVal_1736 (Array Int Int)) (v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1737 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1737 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1737) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse1 (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1736 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) .cse4 v_ArrVal_1742))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|))))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse0)) (<= 0 (+ (select (select .cse1 (select (select (let ((.cse2 (store .cse3 .cse4 v_ArrVal_1743))) (store .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse0 4)) 4)))))))) (forall ((v_ArrVal_1736 (Array Int Int)) (v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1737 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1737 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1737) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse11 (select (select (let ((.cse12 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1736 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) .cse7 v_ArrVal_1742))) (store .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= .cse7 (select (let ((.cse8 (let ((.cse9 (store .cse10 .cse7 v_ArrVal_1743))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (select .cse8 (select (select .cse8 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ .cse11 4))) (not (<= 0 .cse11))))))) (forall ((v_ArrVal_1736 (Array Int Int)) (v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1737 (Array Int Int))) (let ((.cse16 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1737 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1737) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1736 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1736) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse17 (select (select .cse16 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse14 (let ((.cse19 (store .cse18 .cse17 v_ArrVal_1742))) (store .cse19 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse19 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|))))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (<= 0 .cse13)) (< (select (select .cse14 (select (select (let ((.cse15 (store .cse16 .cse17 v_ArrVal_1743))) (store .cse15 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse15 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ .cse13 4)) (+ 5 (select (select .cse18 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))))))))) is different from false [2022-11-22 01:57:30,956 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 11095 treesize of output 10629 [2022-11-22 01:57:31,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:57:31,274 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 10813 treesize of output 10323 [2022-11-22 01:57:31,520 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 22165 treesize of output 20637 [2022-11-22 01:57:31,791 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 21152 treesize of output 20832 [2022-11-22 01:57:32,458 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:57:32,460 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 20405 treesize of output 18905 [2022-11-22 01:57:32,804 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 18984 treesize of output 18904 [2022-11-22 01:57:32,913 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 20082 treesize of output 19234 [2022-11-22 01:57:33,025 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 20186 treesize of output 19874 [2022-11-22 01:57:33,177 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 19776 treesize of output 19460 [2022-11-22 01:57:33,569 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 19579 treesize of output 19403 [2022-11-22 01:57:33,727 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 19427 treesize of output 19407 [2022-11-22 01:57:34,057 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 19391 treesize of output 19377