./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/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_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/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_79d316a1-87ac-4fd0-b452-9463aed31a89/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 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:33:43,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:33:43,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:33:43,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:33:43,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:33:43,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:33:43,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:33:43,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:33:43,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:33:43,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:33:43,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:33:43,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:33:43,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:33:43,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:33:43,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:33:43,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:33:43,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:33:43,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:33:43,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:33:43,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:33:43,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:33:43,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:33:43,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:33:43,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:33:43,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:33:43,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:33:43,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:33:43,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:33:43,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:33:43,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:33:43,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:33:43,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:33:43,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:33:43,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:33:43,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:33:43,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:33:43,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:33:43,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:33:43,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:33:43,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:33:43,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:33:43,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:33:43,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:33:43,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:33:43,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:33:43,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:33:43,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:33:43,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:33:43,342 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:33:43,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:33:43,342 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:33:43,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:33:43,343 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:33:43,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:33:43,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:33:43,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:33:43,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:33:43,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:33:43,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:33:43,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:33:43,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:33:43,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:33:43,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:33:43,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:33:43,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:33:43,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:33:43,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:33:43,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:33:43,348 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:33:43,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:33:43,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:33:43,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:33:43,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:33:43,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:33:43,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:33:43,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:33:43,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:33:43,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:33:43,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:33:43,351 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:33:43,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:33:43,351 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:33:43,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:33:43,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:33:43,352 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_79d316a1-87ac-4fd0-b452-9463aed31a89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 [2022-11-22 00:33:43,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:33:43,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:33:43,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:33:43,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:33:43,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:33:43,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-22 00:33:46,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:33:47,097 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:33:47,102 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-22 00:33:47,117 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/data/e19b08b41/2dac83c8e66748008b35f5f2a153309c/FLAG47ee7bdb8 [2022-11-22 00:33:47,138 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/data/e19b08b41/2dac83c8e66748008b35f5f2a153309c [2022-11-22 00:33:47,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:33:47,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:33:47,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:33:47,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:33:47,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:33:47,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7977ea14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47, skipping insertion in model container [2022-11-22 00:33:47,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:33:47,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:33:47,630 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_79d316a1-87ac-4fd0-b452-9463aed31a89/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-22 00:33:47,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:47,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:33:47,705 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_79d316a1-87ac-4fd0-b452-9463aed31a89/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-22 00:33:47,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:47,734 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:33:47,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47 WrapperNode [2022-11-22 00:33:47,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:33:47,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:47,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:33:47,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:33:47,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,780 INFO L138 Inliner]: procedures = 126, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2022-11-22 00:33:47,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:47,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:33:47,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:33:47,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:33:47,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,811 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:33:47,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:33:47,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:33:47,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:33:47,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (1/1) ... [2022-11-22 00:33:47,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:33:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:47,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:33:47,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:33:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-22 00:33:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-22 00:33:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:33:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:33:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:33:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:33:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:33:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:33:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:33:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:33:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:33:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:33:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:33:48,074 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:33:48,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:33:48,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-22 00:33:48,433 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:33:48,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:33:48,503 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:33:48,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:33:48 BoogieIcfgContainer [2022-11-22 00:33:48,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:33:48,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:33:48,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:33:48,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:33:48,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:33:47" (1/3) ... [2022-11-22 00:33:48,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec504a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:33:48, skipping insertion in model container [2022-11-22 00:33:48,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:47" (2/3) ... [2022-11-22 00:33:48,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec504a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:33:48, skipping insertion in model container [2022-11-22 00:33:48,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:33:48" (3/3) ... [2022-11-22 00:33:48,519 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all_reverse.i [2022-11-22 00:33:48,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:33:48,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-22 00:33:48,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:33:48,609 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;@b4156ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:33:48,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-22 00:33:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:33:48,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:48,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:33:48,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 5050762, now seen corresponding path program 1 times [2022-11-22 00:33:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:48,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670934337] [2022-11-22 00:33:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:48,965 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 00:33:48,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670934337] [2022-11-22 00:33:48,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670934337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:48,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:48,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:33:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104138505] [2022-11-22 00:33:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:49,007 INFO L87 Difference]: Start difference. First operand has 69 states, 33 states have (on average 2.272727272727273) internal successors, (75), 67 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:49,151 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-11-22 00:33:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:49,154 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 00:33:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:49,191 INFO L225 Difference]: With dead ends: 109 [2022-11-22 00:33:49,191 INFO L226 Difference]: Without dead ends: 105 [2022-11-22 00:33:49,193 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 00:33:49,197 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:49,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 102 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:33:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-22 00:33:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 62. [2022-11-22 00:33:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 2.129032258064516) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-11-22 00:33:49,234 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 4 [2022-11-22 00:33:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:49,234 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-11-22 00:33:49,234 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 00:33:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-11-22 00:33:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:33:49,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:49,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:33:49,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:33:49,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash 5050763, now seen corresponding path program 1 times [2022-11-22 00:33:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:49,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282255030] [2022-11-22 00:33:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,322 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 00:33:49,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282255030] [2022-11-22 00:33:49,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282255030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:49,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:49,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:33:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697292816] [2022-11-22 00:33:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:49,326 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:49,437 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-22 00:33:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:49,438 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 00:33:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:49,439 INFO L225 Difference]: With dead ends: 108 [2022-11-22 00:33:49,440 INFO L226 Difference]: Without dead ends: 108 [2022-11-22 00:33:49,440 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 00:33:49,441 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:49,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:33:49,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-22 00:33:49,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 59. [2022-11-22 00:33:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 31 states have (on average 2.032258064516129) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-22 00:33:49,449 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 4 [2022-11-22 00:33:49,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:49,450 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-22 00:33:49,450 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 00:33:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-22 00:33:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:33:49,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:49,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:33:49,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:33:49,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 5174857, now seen corresponding path program 1 times [2022-11-22 00:33:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959137852] [2022-11-22 00:33:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:49,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,507 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 00:33:49,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959137852] [2022-11-22 00:33:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959137852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:49,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:49,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:33:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673961330] [2022-11-22 00:33:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:49,510 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:49,549 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-11-22 00:33:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:49,550 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 00:33:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:49,551 INFO L225 Difference]: With dead ends: 69 [2022-11-22 00:33:49,551 INFO L226 Difference]: Without dead ends: 69 [2022-11-22 00:33:49,552 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 00:33:49,554 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:49,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:33:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-22 00:33:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-11-22 00:33:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 2.0) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-11-22 00:33:49,568 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 4 [2022-11-22 00:33:49,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:49,569 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-11-22 00:33:49,570 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 00:33:49,570 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-11-22 00:33:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:33:49,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:49,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:49,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:33:49,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 150200334, now seen corresponding path program 1 times [2022-11-22 00:33:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759752819] [2022-11-22 00:33:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,669 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 00:33:49,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759752819] [2022-11-22 00:33:49,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759752819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:49,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:49,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:33:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704582786] [2022-11-22 00:33:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:49,672 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:49,702 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-11-22 00:33:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:49,703 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 00:33:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:49,704 INFO L225 Difference]: With dead ends: 66 [2022-11-22 00:33:49,704 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 00:33:49,704 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 00:33:49,705 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:49,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:33:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 00:33:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-11-22 00:33:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.864864864864865) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-11-22 00:33:49,711 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2022-11-22 00:33:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:49,711 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-11-22 00:33:49,711 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 00:33:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-11-22 00:33:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:33:49,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:49,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:49,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:33:49,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash -732865500, now seen corresponding path program 1 times [2022-11-22 00:33:49,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:49,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754998032] [2022-11-22 00:33:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,847 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 00:33:49,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:49,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754998032] [2022-11-22 00:33:49,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754998032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:49,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964097588] [2022-11-22 00:33:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:49,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:49,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:49,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:49,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:33:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:49,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:33:49,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:50,008 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 00:33:50,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:50,048 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 00:33:50,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964097588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:50,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927612961] [2022-11-22 00:33:50,073 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 00:33:50,073 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:50,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:50,092 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:50,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:50,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,202 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 00:33:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,283 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 00:33:50,389 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 00:33:50,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,407 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 00:33:50,426 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 00:33:50,485 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 00:33:50,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,524 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 00:33:50,545 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 00:33:50,591 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 00:33:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,620 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 00:33:50,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-22 00:33:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,767 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 00:33:50,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,849 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 00:33:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,873 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 34 treesize of output 25 [2022-11-22 00:33:50,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,897 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 00:33:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,953 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 00:33:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:50,974 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 00:33:51,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,021 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 00:33:51,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,229 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 00:33:51,232 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 00:33:51,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,290 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 00:33:51,291 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 00:33:51,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,339 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:33:51,342 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 00:33:51,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,569 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 00:33:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,669 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 00:33:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,694 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 00:33:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,721 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 00:33:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,793 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 00:33:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,829 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 00:33:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,863 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 00:33:51,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:51,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:51,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:52,004 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 00:33:52,005 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 00:33:52,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:52,046 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:33:52,046 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 00:33:52,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:52,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:52,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:52,086 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-22 00:33:52,087 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 00:33:52,515 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-22 00:33:52,516 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 00:33:52,935 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-22 00:33:52,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 393 treesize of output 384 [2022-11-22 00:33:52,990 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-22 00:33:52,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 393 treesize of output 384 [2022-11-22 00:33:53,043 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-22 00:33:53,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 386 [2022-11-22 00:33:53,149 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:33:56,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1927612961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:56,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:33:56,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-22 00:33:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509618748] [2022-11-22 00:33:56,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:56,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:33:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:56,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:33:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:33:56,565 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:57,485 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-11-22 00:33:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:33:57,486 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 00:33:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:57,486 INFO L225 Difference]: With dead ends: 76 [2022-11-22 00:33:57,487 INFO L226 Difference]: Without dead ends: 76 [2022-11-22 00:33:57,487 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 00:33:57,488 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:57,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:33:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-22 00:33:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-11-22 00:33:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.75) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:33:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-11-22 00:33:57,494 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 11 [2022-11-22 00:33:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:57,494 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-11-22 00:33:57,494 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 00:33:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-11-22 00:33:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:33:57,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:57,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:33:57,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:57,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:57,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:33:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1488330647, now seen corresponding path program 1 times [2022-11-22 00:33:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644713367] [2022-11-22 00:33:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:57,970 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 00:33:57,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:57,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644713367] [2022-11-22 00:33:57,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644713367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:57,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930403206] [2022-11-22 00:33:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:57,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:57,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:57,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:33:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:58,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:33:58,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:58,099 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 00:33:58,129 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:33:58,129 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 00:33:58,141 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 00:33:58,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:58,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930403206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:33:58,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429887123] [2022-11-22 00:33:58,256 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:33:58,257 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:33:58,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:33:58,257 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:33:58,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:33:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,281 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 00:33:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,312 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 00:33:58,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,348 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 00:33:58,360 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 00:33:58,390 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 00:33:58,415 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 00:33:58,427 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 00:33:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,443 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 00:33:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,486 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 00:33:58,500 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 00:33:58,512 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 00:33:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,575 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 00:33:58,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,617 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 00:33:58,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,630 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 00:33:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,650 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 00:33:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,691 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 00:33:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,712 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 00:33:58,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,729 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 00:33:58,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:58,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:58,840 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:33:58,841 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 00:33:58,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:58,872 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:33:58,873 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 00:33:58,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:58,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:58,926 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:33:58,927 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 00:33:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,057 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 00:33:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,107 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 00:33:59,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,125 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 00:33:59,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,143 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 00:33:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,183 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 00:33:59,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,202 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 00:33:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,217 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 00:33:59,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:59,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:59,320 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:33:59,321 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 00:33:59,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:59,360 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:33:59,361 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 00:33:59,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:59,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:59,391 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:33:59,392 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 00:33:59,747 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-22 00:33:59,747 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 00:34:00,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:00,061 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 00:34:00,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:00,081 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 00:34:00,119 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-22 00:34:00,120 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 00:34:00,192 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:34:03,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1429887123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:03,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:34:03,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-22 00:34:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318120298] [2022-11-22 00:34:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:03,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:34:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:34:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-22 00:34:03,975 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:05,115 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-11-22 00:34:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:34:05,116 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 00:34:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:05,117 INFO L225 Difference]: With dead ends: 74 [2022-11-22 00:34:05,117 INFO L226 Difference]: Without dead ends: 74 [2022-11-22 00:34:05,117 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 00:34:05,118 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:05,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 116 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:34:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-22 00:34:05,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-22 00:34:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-22 00:34:05,124 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 15 [2022-11-22 00:34:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:05,124 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-22 00:34:05,124 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 00:34:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-22 00:34:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:34:05,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:05,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:05,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:05,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 891856784, now seen corresponding path program 1 times [2022-11-22 00:34:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168282782] [2022-11-22 00:34:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:34:05,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:05,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168282782] [2022-11-22 00:34:05,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168282782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:05,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776359231] [2022-11-22 00:34:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:05,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:05,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:05,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:05,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:34:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:05,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 00:34:05,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:05,690 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 00:34:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,713 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 00:34:05,737 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:34:05,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 00:34:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 00:34:05,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 00:34:05,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776359231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [59782342] [2022-11-22 00:34:05,818 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 00:34:05,819 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:34:05,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:34:05,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:34:05,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:34:05,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,837 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 00:34:05,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,863 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 00:34:05,891 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 00:34:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,903 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 00:34:05,912 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 00:34:05,953 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 00:34:05,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:05,970 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 00:34:05,981 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 00:34:06,004 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 23 treesize of output 22 [2022-11-22 00:34:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,024 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 00:34:06,040 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 00:34:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,120 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 00:34:06,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,170 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 00:34:06,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,186 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 00:34:06,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,205 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 00:34:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,238 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 00:34:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,260 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 00:34:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,280 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 00:34:06,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,388 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:06,388 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 00:34:06,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,425 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:06,426 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 00:34:06,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,458 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:06,459 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 00:34:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:06,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,657 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:06,657 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 00:34:06,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,692 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:06,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-22 00:34:06,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:06,755 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:06,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-22 00:34:07,211 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-11-22 00:34:07,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 596 treesize of output 590 [2022-11-22 00:34:07,476 INFO L321 Elim1Store]: treesize reduction 200, result has 14.5 percent of original size [2022-11-22 00:34:07,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 539 [2022-11-22 00:34:07,541 INFO L321 Elim1Store]: treesize reduction 130, result has 17.7 percent of original size [2022-11-22 00:34:07,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 643 treesize of output 639 [2022-11-22 00:34:07,618 INFO L321 Elim1Store]: treesize reduction 200, result has 13.8 percent of original size [2022-11-22 00:34:07,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 617 [2022-11-22 00:34:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:07,797 INFO L321 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2022-11-22 00:34:07,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 658 treesize of output 642 [2022-11-22 00:34:07,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:07,879 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-11-22 00:34:07,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 548 [2022-11-22 00:34:07,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:07,965 INFO L321 Elim1Store]: treesize reduction 222, result has 16.9 percent of original size [2022-11-22 00:34:07,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 626 [2022-11-22 00:34:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,127 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:08,128 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 00:34:08,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,165 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:08,166 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 00:34:08,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,199 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:08,200 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 00:34:08,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,371 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:08,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-11-22 00:34:08,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,418 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:08,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-11-22 00:34:08,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:08,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:08,453 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 00:34:08,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 379 treesize of output 360 [2022-11-22 00:34:08,842 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 00:34:08,851 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 00:34:08,870 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 00:34:08,877 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 00:34:08,884 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 00:34:08,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:34:12,957 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1266#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~head#1.base|) 1)) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-22 00:34:12,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:34:12,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:34:12,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-11-22 00:34:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47635702] [2022-11-22 00:34:12,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:34:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:34:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:34:12,960 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:13,133 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2022-11-22 00:34:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:34:13,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 00:34:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:13,135 INFO L225 Difference]: With dead ends: 117 [2022-11-22 00:34:13,135 INFO L226 Difference]: Without dead ends: 117 [2022-11-22 00:34:13,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:34:13,136 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 267 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:13,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 53 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-22 00:34:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2022-11-22 00:34:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:34:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2022-11-22 00:34:13,142 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 19 [2022-11-22 00:34:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:13,143 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2022-11-22 00:34:13,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2022-11-22 00:34:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:34:13,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:13,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:13,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:13,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 891856785, now seen corresponding path program 1 times [2022-11-22 00:34:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:13,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995302933] [2022-11-22 00:34:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:13,690 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 00:34:13,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995302933] [2022-11-22 00:34:13,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995302933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490921530] [2022-11-22 00:34:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:13,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:13,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:13,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:13,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:34:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:13,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 00:34:13,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:13,819 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 00:34:13,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:13,842 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 00:34:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:13,886 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 00:34:13,920 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 00:34:13,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:16,160 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| Int)) (or (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| Int) (v_ArrVal_359 Int)) (or (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_360 Int)) (<= (+ |c_ULTIMATE.start_main_~#s~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| v_ArrVal_359) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| v_ArrVal_360) |c_ULTIMATE.start_main_~#s~0#1.base|))))) (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| |c_#StackHeapBarrier|)))) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.offset|)) is different from false [2022-11-22 00:34:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-22 00:34:16,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490921530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589170374] [2022-11-22 00:34:16,164 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 00:34:16,164 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:34:16,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:34:16,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:34:16,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:34:16,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,188 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 00:34:16,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,216 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 00:34:16,242 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 00:34:16,255 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 00:34:16,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,265 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 00:34:16,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,289 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 00:34:16,303 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 00:34:16,312 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 00:34:16,335 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 00:34:16,347 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 00:34:16,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,362 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 00:34:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,436 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 00:34:16,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,520 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 00:34:16,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,549 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 00:34:16,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,572 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 00:34:16,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,613 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 00:34:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,632 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 00:34:16,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,655 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 00:34:16,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,762 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:16,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-22 00:34:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,792 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:16,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-11-22 00:34:16,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:16,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,824 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:16,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-22 00:34:16,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:16,994 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:16,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-22 00:34:17,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,031 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 00:34:17,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 386 treesize of output 367 [2022-11-22 00:34:17,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 384 [2022-11-22 00:34:17,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,401 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-22 00:34:17,401 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 00:34:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,461 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 00:34:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,478 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 00:34:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,495 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 00:34:17,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,537 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 00:34:17,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,552 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 00:34:17,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,575 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 00:34:17,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,677 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:17,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-22 00:34:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,715 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:17,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-11-22 00:34:17,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,747 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:34:17,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-11-22 00:34:17,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,922 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:17,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-11-22 00:34:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:17,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,957 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-22 00:34:17,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 367 [2022-11-22 00:34:17,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:17,991 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-22 00:34:17,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 389 treesize of output 384 [2022-11-22 00:34:18,378 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 00:34:18,385 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 00:34:18,403 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 00:34:18,410 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 00:34:18,417 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 00:34:18,430 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:34:22,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1593#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (<= (+ |ULTIMATE.start_dll_remove_last_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_last_~head#1.base|))) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.offset| |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (= |ULTIMATE.start_dll_remove_last_~head#1.base| |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| |ULTIMATE.start_main_~#s~0#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= |ULTIMATE.start_dll_remove_last_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-22 00:34:22,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:34:22,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:34:22,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 10 [2022-11-22 00:34:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641469542] [2022-11-22 00:34:22,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:22,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:34:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:34:22,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=313, Unknown=1, NotChecked=38, Total=462 [2022-11-22 00:34:22,377 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:22,600 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-22 00:34:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 00:34:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:22,602 INFO L225 Difference]: With dead ends: 102 [2022-11-22 00:34:22,602 INFO L226 Difference]: Without dead ends: 102 [2022-11-22 00:34:22,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=146, Invalid=409, Unknown=1, NotChecked=44, Total=600 [2022-11-22 00:34:22,603 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 358 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:22,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 37 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2022-11-22 00:34:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-22 00:34:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 69. [2022-11-22 00:34:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5625) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-22 00:34:22,608 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 19 [2022-11-22 00:34:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:22,608 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-22 00:34:22,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-22 00:34:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 00:34:22,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:22,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:22,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:22,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 00:34:22,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756558, now seen corresponding path program 1 times [2022-11-22 00:34:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173894318] [2022-11-22 00:34:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:23,022 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 00:34:23,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173894318] [2022-11-22 00:34:23,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173894318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:23,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:23,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:34:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707007932] [2022-11-22 00:34:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:23,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:23,025 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:23,231 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2022-11-22 00:34:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:34:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 00:34:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:23,232 INFO L225 Difference]: With dead ends: 99 [2022-11-22 00:34:23,232 INFO L226 Difference]: Without dead ends: 99 [2022-11-22 00:34:23,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:34:23,233 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:23,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 117 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:34:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-22 00:34:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2022-11-22 00:34:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 68 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-22 00:34:23,238 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 20 [2022-11-22 00:34:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:23,239 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-22 00:34:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-22 00:34:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 00:34:23,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:23,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:34:23,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1877756559, now seen corresponding path program 1 times [2022-11-22 00:34:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:23,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223828967] [2022-11-22 00:34:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:23,556 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 00:34:23,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:23,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223828967] [2022-11-22 00:34:23,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223828967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:23,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:23,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:34:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434589098] [2022-11-22 00:34:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:23,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:23,558 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:23,766 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2022-11-22 00:34:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 00:34:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:23,768 INFO L225 Difference]: With dead ends: 93 [2022-11-22 00:34:23,768 INFO L226 Difference]: Without dead ends: 93 [2022-11-22 00:34:23,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:34:23,769 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 101 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-22 00:34:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2022-11-22 00:34:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-11-22 00:34:23,772 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 20 [2022-11-22 00:34:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:23,773 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-11-22 00:34:23,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-11-22 00:34:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:34:23,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:23,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:23,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:34:23,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1916465157, now seen corresponding path program 1 times [2022-11-22 00:34:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:23,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88994164] [2022-11-22 00:34:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:23,838 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 00:34:23,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:23,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88994164] [2022-11-22 00:34:23,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88994164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:23,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:23,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:34:23,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128125263] [2022-11-22 00:34:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:23,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:34:23,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:34:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:34:23,841 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:23,860 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2022-11-22 00:34:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:34:23,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 00:34:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:23,861 INFO L225 Difference]: With dead ends: 94 [2022-11-22 00:34:23,862 INFO L226 Difference]: Without dead ends: 94 [2022-11-22 00:34:23,862 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 00:34:23,863 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:23,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 94 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:34:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-22 00:34:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-22 00:34:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 65 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2022-11-22 00:34:23,866 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 21 [2022-11-22 00:34:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:23,867 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2022-11-22 00:34:23,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2022-11-22 00:34:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 00:34:23,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:23,868 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 00:34:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:34:23,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1703376233, now seen corresponding path program 1 times [2022-11-22 00:34:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830887527] [2022-11-22 00:34:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:24,003 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 00:34:24,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:24,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830887527] [2022-11-22 00:34:24,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830887527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:24,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:24,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:34:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474300016] [2022-11-22 00:34:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:24,006 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:24,119 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-22 00:34:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:34:24,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 00:34:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:24,119 INFO L225 Difference]: With dead ends: 65 [2022-11-22 00:34:24,120 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 00:34:24,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:34:24,120 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 174 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:24,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 55 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 00:34:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-22 00:34:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-11-22 00:34:24,123 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 23 [2022-11-22 00:34:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:24,123 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-11-22 00:34:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-11-22 00:34:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 00:34:24,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:24,124 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 00:34:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:34:24,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360589, now seen corresponding path program 1 times [2022-11-22 00:34:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:24,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487451387] [2022-11-22 00:34:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:24,225 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 00:34:24,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:24,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487451387] [2022-11-22 00:34:24,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487451387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:24,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:24,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:34:24,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553651948] [2022-11-22 00:34:24,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:24,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:34:24,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:34:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:24,228 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:24,333 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-11-22 00:34:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:24,333 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 00:34:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:24,334 INFO L225 Difference]: With dead ends: 65 [2022-11-22 00:34:24,334 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 00:34:24,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:24,335 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:24,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 00:34:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-11-22 00:34:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-11-22 00:34:24,338 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 23 [2022-11-22 00:34:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:24,338 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-11-22 00:34:24,338 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 00:34:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-11-22 00:34:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 00:34:24,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:24,339 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 00:34:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:34:24,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1703360588, now seen corresponding path program 1 times [2022-11-22 00:34:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:24,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42769707] [2022-11-22 00:34:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:24,658 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 00:34:24,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:24,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42769707] [2022-11-22 00:34:24,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42769707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:24,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:24,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:34:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307708382] [2022-11-22 00:34:24,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:24,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:34:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:34:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:34:24,661 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:24,983 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2022-11-22 00:34:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:34:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 00:34:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:24,984 INFO L225 Difference]: With dead ends: 103 [2022-11-22 00:34:24,984 INFO L226 Difference]: Without dead ends: 103 [2022-11-22 00:34:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-22 00:34:24,985 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 233 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:24,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 110 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:34:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-22 00:34:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-11-22 00:34:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-22 00:34:24,988 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2022-11-22 00:34:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:24,988 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-22 00:34:24,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-22 00:34:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 00:34:24,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:24,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:34:24,990 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1265055569, now seen corresponding path program 1 times [2022-11-22 00:34:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:24,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188153226] [2022-11-22 00:34:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:25,165 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 00:34:25,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:25,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188153226] [2022-11-22 00:34:25,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188153226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:25,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:25,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:34:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449585898] [2022-11-22 00:34:25,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:25,168 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:25,330 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2022-11-22 00:34:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:34:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-22 00:34:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:25,331 INFO L225 Difference]: With dead ends: 87 [2022-11-22 00:34:25,331 INFO L226 Difference]: Without dead ends: 87 [2022-11-22 00:34:25,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:34:25,332 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:25,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 84 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-22 00:34:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2022-11-22 00:34:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-11-22 00:34:25,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 24 [2022-11-22 00:34:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:25,335 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-11-22 00:34:25,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-11-22 00:34:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 00:34:25,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:25,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:25,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:34:25,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash -562016871, now seen corresponding path program 1 times [2022-11-22 00:34:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:25,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505469995] [2022-11-22 00:34:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:25,414 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 00:34:25,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505469995] [2022-11-22 00:34:25,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505469995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:25,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:25,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:34:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469029988] [2022-11-22 00:34:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:25,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:34:25,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:34:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:25,417 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:25,507 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-11-22 00:34:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:34:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-22 00:34:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:25,508 INFO L225 Difference]: With dead ends: 73 [2022-11-22 00:34:25,508 INFO L226 Difference]: Without dead ends: 73 [2022-11-22 00:34:25,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:25,509 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:25,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 81 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-22 00:34:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-22 00:34:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-22 00:34:25,513 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 25 [2022-11-22 00:34:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:25,513 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-22 00:34:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-22 00:34:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 00:34:25,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:25,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:34:25,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -546984227, now seen corresponding path program 1 times [2022-11-22 00:34:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996534429] [2022-11-22 00:34:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:25,874 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 00:34:25,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996534429] [2022-11-22 00:34:25,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996534429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:25,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:25,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 00:34:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242493740] [2022-11-22 00:34:25,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:25,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:34:25,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:34:25,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:34:25,876 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:26,194 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-22 00:34:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:34:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-22 00:34:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:26,195 INFO L225 Difference]: With dead ends: 75 [2022-11-22 00:34:26,195 INFO L226 Difference]: Without dead ends: 75 [2022-11-22 00:34:26,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:34:26,196 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 193 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:26,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 104 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:34:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-22 00:34:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-22 00:34:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2022-11-22 00:34:26,198 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 25 [2022-11-22 00:34:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:26,198 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2022-11-22 00:34:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2022-11-22 00:34:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:34:26,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:26,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:26,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:34:26,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -242653710, now seen corresponding path program 1 times [2022-11-22 00:34:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:26,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269804733] [2022-11-22 00:34:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:26,399 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 00:34:26,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:26,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269804733] [2022-11-22 00:34:26,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269804733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:26,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975051222] [2022-11-22 00:34:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:26,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:26,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:34:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:26,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 00:34:26,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:26,668 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 00:34:26,672 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 00:34:26,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:34:26,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975051222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:26,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:34:26,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-22 00:34:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549722892] [2022-11-22 00:34:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:34:26,674 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:26,789 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-11-22 00:34:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-22 00:34:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:26,790 INFO L225 Difference]: With dead ends: 78 [2022-11-22 00:34:26,791 INFO L226 Difference]: Without dead ends: 78 [2022-11-22 00:34:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:34:26,791 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 89 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-22 00:34:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-11-22 00:34:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.368421052631579) internal successors, (78), 70 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-22 00:34:26,794 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 26 [2022-11-22 00:34:26,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:26,794 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-22 00:34:26,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-22 00:34:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:34:26,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:26,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:26,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:26,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 00:34:26,999 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 223361305, now seen corresponding path program 1 times [2022-11-22 00:34:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963204922] [2022-11-22 00:34:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:27,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:27,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963204922] [2022-11-22 00:34:27,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963204922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:27,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194965525] [2022-11-22 00:34:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:27,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:27,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:27,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:34:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:27,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-22 00:34:27,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:27,865 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 00:34:27,930 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:34:27,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 00:34:27,969 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 13 treesize of output 9 [2022-11-22 00:34:28,016 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 00:34:28,041 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:34:28,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-22 00:34:28,235 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 00:34:28,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:28,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 16 [2022-11-22 00:34:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:28,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:28,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-11-22 00:34:28,471 INFO L321 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2022-11-22 00:34:28,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 00:34:28,480 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#s~0#1.base| Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_994))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (= (select (select .cse1 .cse0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) is different from false [2022-11-22 00:34:28,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:28,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 51 [2022-11-22 00:34:28,684 INFO L321 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2022-11-22 00:34:28,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 115 [2022-11-22 00:34:28,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:28,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 91 [2022-11-22 00:34:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-22 00:34:28,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194965525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:28,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472853707] [2022-11-22 00:34:28,908 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-22 00:34:28,908 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:34:28,908 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:34:28,908 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:34:28,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:34:28,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,938 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 00:34:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:28,972 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 00:34:29,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,002 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 00:34:29,012 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 00:34:29,022 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 15 treesize of output 1 [2022-11-22 00:34:29,046 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 00:34:29,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:34:29,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,067 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 00:34:29,092 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 00:34:29,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-22 00:34:29,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,120 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 00:34:29,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,206 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 00:34:29,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,251 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 00:34:29,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,272 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 00:34:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,288 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 00:34:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,335 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 00:34:29,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,352 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 00:34:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,371 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 00:34:29,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,410 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 00:34:29,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,428 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 00:34:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,450 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 00:34:29,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:29,509 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 00:34:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:29,530 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 00:34:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,554 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 00:34:29,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,889 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-22 00:34:29,889 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 00:34:29,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,961 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 00:34:29,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:29,988 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 00:34:30,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,001 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 00:34:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,037 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 00:34:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,054 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 00:34:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,074 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 00:34:30,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,116 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 00:34:30,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,135 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 00:34:30,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-22 00:34:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,229 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 00:34:30,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,259 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 00:34:30,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,290 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 00:34:30,359 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 00:34:30,365 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 00:34:30,380 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 11 treesize of output 7 [2022-11-22 00:34:30,387 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 00:34:30,395 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 00:34:30,407 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 00:34:30,415 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 00:34:30,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,425 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 00:34:30,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,440 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 00:34:30,447 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 00:34:30,457 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 00:34:30,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,484 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 00:34:30,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:30,505 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:34:30,506 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 00:34:30,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:30,527 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:34:30,528 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 00:34:30,595 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 00:34:30,601 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 00:34:30,618 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 00:34:30,626 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 00:34:30,633 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 00:34:30,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,646 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 00:34:30,654 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 00:34:30,661 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 00:34:30,677 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 00:34:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,687 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 00:34:30,696 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 00:34:30,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:30,730 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:34:30,730 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 00:34:30,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:30,753 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:34:30,754 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 00:34:30,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:30,773 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 00:34:31,088 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 00:34:31,095 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 00:34:31,113 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 00:34:31,120 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 00:34:31,128 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 11 treesize of output 7 [2022-11-22 00:34:31,185 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 00:34:31,192 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 00:34:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:31,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:31,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:31,212 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:34:31,212 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 00:34:31,295 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 00:34:31,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:31,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:34:31,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:34:31,314 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:34:31,314 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 00:34:31,343 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 00:34:31,396 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:34:35,588 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3724#(and (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.offset|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_dll_remove_last_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_last_~head#1.offset| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_dll_remove_last_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_last_#in~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (not (= (select |#valid| |ULTIMATE.start_dll_remove_last_~last~0#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_remove_last_~snd_to_last~0#1.offset| 4)) (= |#NULL.base| 0))' at error location [2022-11-22 00:34:35,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:34:35,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:34:35,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 31 [2022-11-22 00:34:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165126918] [2022-11-22 00:34:35,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 00:34:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 00:34:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1940, Unknown=15, NotChecked=90, Total=2256 [2022-11-22 00:34:35,591 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:36,854 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-11-22 00:34:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 00:34:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-22 00:34:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:36,856 INFO L225 Difference]: With dead ends: 98 [2022-11-22 00:34:36,856 INFO L226 Difference]: Without dead ends: 98 [2022-11-22 00:34:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=485, Invalid=3164, Unknown=15, NotChecked=118, Total=3782 [2022-11-22 00:34:36,858 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 376 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 242 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 714 Invalid, 0 Unknown, 69 Unchecked, 0.6s Time] [2022-11-22 00:34:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-22 00:34:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2022-11-22 00:34:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-11-22 00:34:36,862 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 26 [2022-11-22 00:34:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-11-22 00:34:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-11-22 00:34:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:34:36,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:36,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:36,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:37,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-22 00:34:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 223361306, now seen corresponding path program 1 times [2022-11-22 00:34:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:37,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335483981] [2022-11-22 00:34:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:38,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335483981] [2022-11-22 00:34:38,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335483981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255094336] [2022-11-22 00:34:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:38,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:38,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d316a1-87ac-4fd0-b452-9463aed31a89/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:34:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-22 00:34:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:38,221 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 00:34:38,333 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:34:38,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 00:34:38,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:34:38,395 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 00:34:38,471 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 00:34:38,481 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 00:34:38,580 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:34:38,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 60 [2022-11-22 00:34:38,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-22 00:34:39,208 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-22 00:34:39,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 62 [2022-11-22 00:34:39,238 INFO L321 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2022-11-22 00:34:39,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 38 [2022-11-22 00:34:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:39,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:40,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:40,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 329 [2022-11-22 00:34:41,552 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse6 (select (select .cse3 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse2 (select (select .cse8 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ 4 .cse6))) (let ((.cse1 (select (select .cse8 .cse2) .cse4)) (.cse0 (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse1 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2)) (= .cse1 .cse0) (< (select (select .cse3 .cse2) .cse4) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse6)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse14 (select (select .cse16 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse12 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse13 (+ .cse14 4))) (let ((.cse10 (select (select .cse16 .cse11) .cse13)) (.cse9 (select (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse15 (select (select .cse15 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse10 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse11)) (= .cse10 0) (= .cse9 (select (select .cse12 .cse11) .cse13)) (not (= .cse14 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse18 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse17 (select (select .cse19 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse17 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse18)) (<= 0 (+ (select (select .cse19 .cse18) (+ .cse17 4)) 4)))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse21 (select (select .cse24 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse23 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse20 (select (select .cse24 .cse21) (+ 4 .cse23)))) (or (= .cse20 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse20 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse21)) (= .cse20 (select (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse22 (select (select .cse22 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse23))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse25 (select (let ((.cse32 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or (= .cse25 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse30 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse31 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse31 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse30 4))) (let ((.cse26 (select (select .cse31 .cse27) .cse29))) (or (= .cse26 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse27)) (= (select (select .cse28 .cse27) .cse29) 0) (= .cse25 .cse26) (not (= .cse30 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse39 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse38 (select (select .cse39 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse34 (select (select .cse36 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse37 (+ .cse38 4))) (let ((.cse33 (select (select .cse39 .cse34) .cse37))) (or (< .cse33 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse34)) (= .cse33 0) (= (select (let ((.cse35 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse35 (select (select .cse35 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select .cse36 .cse34) .cse37)) (not (= .cse38 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse43 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse41 (select (select .cse43 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse42 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse40 (select (select .cse43 .cse41) (+ 4 .cse42)))) (or (= .cse40 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse40 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse41)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse42))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse44 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse44 (select (select .cse44 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse50 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse48 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse49 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse46 (select (select .cse50 .cse48) (+ 4 .cse49)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse45 (select (let ((.cse47 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse47 (select (select .cse47 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse45 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 .cse45)))) (= .cse46 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse46 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse48)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse49))))))) (or (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse51 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse51 (select (select .cse51 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse55 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse56 (select (select .cse55 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse53 (select (select .cse52 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse54 (+ .cse56 4))) (or (= (select (select .cse52 .cse53) .cse54) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse53)) (= (select (select .cse55 .cse53) .cse54) 0) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse59 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse61 (select (select .cse59 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse60 (+ 4 .cse61))) (let ((.cse57 (select (select .cse62 .cse58) .cse60))) (or (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse57 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse58)) (< (select (select .cse59 .cse58) .cse60) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse61)))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse66 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse64 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse65 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse66 .cse64) (+ .cse65 4)))) (or (< .cse63 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse64)) (= .cse63 0) (not (= .cse65 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse72 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse71 (select (select .cse72 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse68 (select (select .cse67 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse69 (+ .cse71 4))) (let ((.cse70 (select (select .cse72 .cse68) .cse69))) (or (= (select (select .cse67 .cse68) .cse69) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (< .cse70 .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse68)) (= .cse70 0) (not (= .cse71 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse77 (select (select .cse76 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse73 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse74 (select (select .cse73 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse75 (+ 4 .cse77))) (or (= (select (select .cse73 .cse74) .cse75) 0) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse74)) (< (select (select .cse76 .cse74) .cse75) .cse5) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse77))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse80 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse83 (select (select .cse80 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse79 (select (select .cse84 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (+ .cse83 4))) (let ((.cse78 (select (select .cse84 .cse79) .cse81))) (or (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse79)) (= (select (select .cse80 .cse79) .cse81) 0) (= (select (let ((.cse82 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse82 (select (select .cse82 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) .cse78) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))))) is different from false [2022-11-22 00:34:42,476 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse87 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 5)) (.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0))) (.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse87 0)))) (and (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse4 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse3 (select (select .cse4 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse10 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse1 (select (select .cse10 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ .cse3 4))) (let ((.cse0 (select (select .cse10 .cse1) .cse5)) (.cse2 (select (let ((.cse7 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse7 (select (select .cse7 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse0 0) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse3)) (< (select (select .cse4 .cse1) .cse5) .cse6) (= .cse0 .cse2))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse18 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse13 (select (select .cse18 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse15 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse11 (select (select .cse15 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse16 (+ .cse13 4))) (let ((.cse12 (select (select .cse18 .cse11) .cse16)) (.cse14 (select (let ((.cse17 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse17 (select (select .cse17 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (not (= .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse12 0) (< .cse12 .cse6) (not (= .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse14 (select (select .cse15 .cse11) .cse16)) (= .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse24 (select (let ((.cse26 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse26 (select (select .cse26 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse20 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse23 (select (select .cse20 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse25 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse19 (select (select .cse25 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse21 (+ .cse23 4))) (let ((.cse22 (select (select .cse25 .cse19) .cse21))) (or (not (= .cse19 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse20 .cse19) .cse21) 0) (= .cse22 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse23 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= .cse24 .cse22))))))) (= .cse24 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse28 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse31 (select (select .cse28 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse30 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse27 (select (select .cse30 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse29 (+ .cse31 4))) (or (not (= .cse27 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse28 .cse27) .cse29) 0) (= (select (select .cse30 .cse27) .cse29) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse31 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (= (select (let ((.cse32 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse32 (select (select .cse32 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (or (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (= (select (let ((.cse33 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse33 (select (select .cse33 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse37 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse35 (select (select .cse37 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse36 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse34 (select (select .cse37 .cse35) (+ .cse36 4)))) (or (= .cse34 0) (not (= .cse35 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse36)) (= .cse34 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse42 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse41 (select (select .cse42 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse38 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse39 (select (select .cse38 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse40 (+ .cse41 4))) (or (= (select (select .cse38 .cse39) .cse40) 0) (not (= .cse39 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse41)) (< (select (select .cse42 .cse39) .cse40) .cse6)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse46 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse43 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse45 (select (select .cse46 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse44 (select (select .cse46 .cse43) (+ .cse45 4)))) (or (not (= .cse43 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse44 0) (< .cse44 .cse6) (not (= .cse45 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse53 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse49 (select (select .cse53 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse51 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse47 (select (select .cse51 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse52 (+ .cse49 4))) (let ((.cse48 (select (select .cse53 .cse47) .cse52))) (or (not (= .cse47 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse48 0) (< .cse48 .cse6) (not (= .cse49 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse50 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse50 (select (select .cse50 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) (select (select .cse51 .cse47) .cse52)))))))) (forall ((v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1100 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse54 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1100))) (let ((.cse55 (select (select (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1101) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse56 (select (select .cse54 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (<= 0 (+ (select (select .cse54 .cse55) (+ .cse56 4)) 4)) (not (= .cse55 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= .cse56 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse60 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5))) (let ((.cse59 (select (select .cse60 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse58 (select (select .cse62 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse61 (+ .cse59 4))) (let ((.cse57 (select (select .cse62 .cse58) .cse61))) (or (= .cse57 0) (not (= .cse58 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse59)) (< (select (select .cse60 .cse58) .cse61) .cse6) (= .cse57 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))) (forall ((v_prenex_6 Int) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse68 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse64 (select (select .cse68 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse67 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse63 (select (select .cse68 .cse64) (+ .cse67 4)))) (or (= .cse63 0) (not (= .cse64 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse65 (select (let ((.cse66 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse66 (select (select .cse66 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) (or (= .cse65 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (= .cse63 .cse65)))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse67)) (= .cse63 |c_ULTIMATE.start_dll_create_~head~0#1.base|)))))) (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse74 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse73 (select (select .cse74 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse71 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse69 (select (select .cse71 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse72 (+ .cse73 4))) (let ((.cse70 (select (select .cse74 .cse69) .cse72))) (or (not (= .cse69 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= .cse70 0) (< .cse70 .cse6) (= (select (select .cse71 .cse69) .cse72) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse73 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse76 (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse79 (select (select .cse76 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse81 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (let ((.cse75 (select (select .cse81 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse77 (+ .cse79 4))) (let ((.cse78 (select (select .cse81 .cse75) .cse77))) (or (not (= .cse75 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse76 .cse75) .cse77) 0) (= .cse78 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse79 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (select (let ((.cse80 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (select .cse80 (select (select .cse80 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)) .cse78))))))) (forall ((v_prenex_6 Int) (v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (let ((.cse86 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_4))) (let ((.cse83 (select (select .cse86 v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse84 (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_5) v_prenex_6) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse82 (select (select .cse86 .cse83) (+ .cse84 4)))) (or (= .cse82 0) (not (= .cse83 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse84)) (= .cse82 (select (let ((.cse85 (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1))) (select .cse85 (select (select .cse85 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (= .cse82 |c_ULTIMATE.start_dll_create_~head~0#1.base|))))))))) is different from false [2022-11-22 00:34:42,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:42,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 238 [2022-11-22 00:34:43,319 INFO L321 Elim1Store]: treesize reduction 325, result has 32.2 percent of original size [2022-11-22 00:34:43,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 1054 treesize of output 1007 [2022-11-22 00:34:43,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:43,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 787 treesize of output 409 [2022-11-22 00:34:43,678 INFO L321 Elim1Store]: treesize reduction 210, result has 39.5 percent of original size [2022-11-22 00:34:43,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1244 treesize of output 1177 [2022-11-22 00:34:43,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 902 treesize of output 876 [2022-11-22 00:34:44,278 INFO L321 Elim1Store]: treesize reduction 134, result has 62.0 percent of original size [2022-11-22 00:34:44,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 1158 treesize of output 1192 [2022-11-22 00:34:44,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:44,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1000 treesize of output 964 [2022-11-22 00:34:44,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:44,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1497 treesize of output 1395 [2022-11-22 00:34:44,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:44,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1718 treesize of output 1620 [2022-11-22 00:35:23,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-22 00:35:23,811 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 00:35:23,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 1 [2022-11-22 00:35:25,636 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 00:35:25,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 1 [2022-11-22 00:35:26,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-22 00:35:28,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-22 00:35:30,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2022-11-22 00:35:34,145 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:34,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:34,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:34,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:34,859 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:35,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:35,771 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:36,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:37,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:37,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:38,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:39,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:39,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:39,590 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:39,620 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:39,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:39,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:40,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:35:58,450 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:58,534 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:35:58,647 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:36:01,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-22 00:36:02,991 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 00:36:06,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:36:06,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 177 [2022-11-22 00:38:03,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:03,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:03,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:04,271 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:04,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 172 [2022-11-22 00:38:04,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:04,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:04,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:04,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:05,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:05,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:05,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:05,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:05,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:05,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:05,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:05,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:06,718 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:06,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 281 [2022-11-22 00:38:07,080 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:07,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 231 treesize of output 215 [2022-11-22 00:38:07,382 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:07,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1768 treesize of output 1636 [2022-11-22 00:38:14,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:14,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:14,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:16,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:16,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:16,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:21,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:21,458 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:21,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:23,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:23,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:23,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:42,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:42,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:42,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:44,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:44,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:44,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:44,896 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:44,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 172 [2022-11-22 00:38:48,877 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:48,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 317 treesize of output 289 [2022-11-22 00:38:50,019 INFO L321 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2022-11-22 00:38:50,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 765 treesize of output 681 [2022-11-22 00:38:59,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:59,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:59,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:38:59,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:59,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:59,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:39:05,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:39:05,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:39:05,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:39:09,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:39:09,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:39:09,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:39:11,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:39:11,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:39:11,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 67 [2022-11-22 00:39:15,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-22 00:39:27,109 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification that was a NOOP. DAG size: 1251 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 00:39:27,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:39:27,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 300 case distinctions, treesize of input 1047 treesize of output 3180