./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:43:00,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:43:00,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:43:00,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:43:00,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:43:00,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:43:00,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:43:00,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:43:00,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:43:00,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:43:00,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:43:00,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:43:00,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:43:00,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:43:00,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:43:00,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:43:00,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:43:00,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:43:00,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:43:00,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:43:00,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:43:00,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:43:00,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:43:00,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:43:00,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:43:00,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:43:00,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:43:00,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:43:00,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:43:00,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:43:00,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:43:00,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:43:00,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:43:00,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:43:00,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:43:00,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:43:00,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:43:00,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:43:00,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:43:00,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:43:00,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:43:00,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:43:00,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:43:00,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:43:00,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:43:00,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:43:00,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:43:00,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:43:00,994 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:43:00,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:43:00,994 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:43:00,994 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:43:00,994 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:43:00,994 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:43:00,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:43:00,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:43:00,995 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:43:00,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:43:00,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:43:00,996 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:43:00,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:43:00,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:43:00,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:43:00,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:43:00,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:43:00,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:43:00,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:43:00,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:43:00,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:43:00,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:43:00,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:43:00,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:43:00,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:01,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:43:01,000 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:43:01,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:43:01,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:43:01,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:43:01,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:43:01,001 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_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97351642d4f3bf3f6d868e0a3719427b4c33bd5e0f87a93a325784728b912f03 [2022-11-26 00:43:01,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:43:01,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:43:01,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:43:01,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:43:01,342 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:43:01,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2022-11-26 00:43:04,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:43:04,839 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:43:04,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2022-11-26 00:43:04,853 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/data/6651abd5e/e92035a7046e4a3c95f927ef7360a820/FLAG038d68c97 [2022-11-26 00:43:04,870 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/data/6651abd5e/e92035a7046e4a3c95f927ef7360a820 [2022-11-26 00:43:04,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:43:04,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:43:04,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:04,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:43:04,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:43:04,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:04" (1/1) ... [2022-11-26 00:43:04,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa9ca74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:04, skipping insertion in model container [2022-11-26 00:43:04,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:04" (1/1) ... [2022-11-26 00:43:04,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:43:04,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:43:05,279 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_90d3a6ac-91b4-47c5-9045-06086ce8d74f/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2022-11-26 00:43:05,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:05,299 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:43:05,374 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_90d3a6ac-91b4-47c5-9045-06086ce8d74f/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2022-11-26 00:43:05,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:05,410 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:43:05,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05 WrapperNode [2022-11-26 00:43:05,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:05,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:05,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:43:05,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:43:05,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,474 INFO L138 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2022-11-26 00:43:05,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:05,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:43:05,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:43:05,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:43:05,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:43:05,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:43:05,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:43:05,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:43:05,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (1/1) ... [2022-11-26 00:43:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:05,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:43:05,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:43:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-26 00:43:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-26 00:43:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:43:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:43:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:43:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:43:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:43:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:43:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:43:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:43:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:43:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:43:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:43:05,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:43:05,853 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:43:05,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:43:05,899 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-26 00:43:06,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:43:06,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:43:06,558 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-26 00:43:06,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:06 BoogieIcfgContainer [2022-11-26 00:43:06,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:43:06,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:43:06,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:43:06,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:43:06,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:43:04" (1/3) ... [2022-11-26 00:43:06,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b147187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:06, skipping insertion in model container [2022-11-26 00:43:06,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:05" (2/3) ... [2022-11-26 00:43:06,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b147187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:06, skipping insertion in model container [2022-11-26 00:43:06,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:06" (3/3) ... [2022-11-26 00:43:06,576 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2022-11-26 00:43:06,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:43:06,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-26 00:43:06,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:43:06,660 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;@29134c89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:43:06,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-26 00:43:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 115 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:43:06,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:06,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:43:06,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 8357563, now seen corresponding path program 1 times [2022-11-26 00:43:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:06,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284042373] [2022-11-26 00:43:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:06,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:06,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284042373] [2022-11-26 00:43:06,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284042373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:06,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:06,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951634332] [2022-11-26 00:43:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:06,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:07,063 INFO L87 Difference]: Start difference. First operand has 117 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 115 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:07,372 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2022-11-26 00:43:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:07,375 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 [2022-11-26 00:43:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:07,383 INFO L225 Difference]: With dead ends: 209 [2022-11-26 00:43:07,384 INFO L226 Difference]: Without dead ends: 203 [2022-11-26 00:43:07,386 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 [2022-11-26 00:43:07,389 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 115 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:07,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 202 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:43:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-26 00:43:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 109. [2022-11-26 00:43:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-26 00:43:07,437 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 4 [2022-11-26 00:43:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:07,437 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-26 00:43:07,438 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) [2022-11-26 00:43:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-26 00:43:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:43:07,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:07,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:43:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:43:07,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:07,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash 8357564, now seen corresponding path program 1 times [2022-11-26 00:43:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:07,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970335227] [2022-11-26 00:43:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:07,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:07,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:07,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970335227] [2022-11-26 00:43:07,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970335227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:07,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:07,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196857635] [2022-11-26 00:43:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:07,617 INFO L87 Difference]: Start difference. First operand 109 states and 120 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) [2022-11-26 00:43:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:07,888 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2022-11-26 00:43:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:07,891 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 [2022-11-26 00:43:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:07,898 INFO L225 Difference]: With dead ends: 202 [2022-11-26 00:43:07,898 INFO L226 Difference]: Without dead ends: 202 [2022-11-26 00:43:07,901 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 [2022-11-26 00:43:07,904 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 113 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:07,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 197 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:43:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-26 00:43:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 106. [2022-11-26 00:43:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-26 00:43:07,924 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 4 [2022-11-26 00:43:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:07,924 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-26 00:43:07,925 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) [2022-11-26 00:43:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-26 00:43:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:43:07,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:07,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:43:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:43:07,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 8595954, now seen corresponding path program 1 times [2022-11-26 00:43:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:07,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434056126] [2022-11-26 00:43:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:08,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434056126] [2022-11-26 00:43:08,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434056126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:08,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:08,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:08,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683014195] [2022-11-26 00:43:08,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:08,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:08,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:08,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:08,041 INFO L87 Difference]: Start difference. First operand 106 states and 117 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) [2022-11-26 00:43:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:08,084 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2022-11-26 00:43:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:08,085 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 [2022-11-26 00:43:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:08,086 INFO L225 Difference]: With dead ends: 116 [2022-11-26 00:43:08,086 INFO L226 Difference]: Without dead ends: 116 [2022-11-26 00:43:08,087 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 [2022-11-26 00:43:08,088 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 194 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-26 00:43:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2022-11-26 00:43:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 52 states have (on average 2.269230769230769) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2022-11-26 00:43:08,099 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 4 [2022-11-26 00:43:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:08,100 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2022-11-26 00:43:08,100 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) [2022-11-26 00:43:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2022-11-26 00:43:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:43:08,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:08,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:08,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:43:08,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 328619199, now seen corresponding path program 1 times [2022-11-26 00:43:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:08,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112542368] [2022-11-26 00:43:08,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:08,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:08,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112542368] [2022-11-26 00:43:08,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112542368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:08,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:08,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672706597] [2022-11-26 00:43:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:08,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:08,159 INFO L87 Difference]: Start difference. First operand 107 states and 118 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) [2022-11-26 00:43:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:08,227 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2022-11-26 00:43:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:08,228 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 [2022-11-26 00:43:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:08,229 INFO L225 Difference]: With dead ends: 113 [2022-11-26 00:43:08,229 INFO L226 Difference]: Without dead ends: 113 [2022-11-26 00:43:08,229 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 [2022-11-26 00:43:08,230 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:08,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 191 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-26 00:43:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2022-11-26 00:43:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-11-26 00:43:08,238 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 8 [2022-11-26 00:43:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:08,238 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-11-26 00:43:08,238 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) [2022-11-26 00:43:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-11-26 00:43:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:43:08,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:08,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:43:08,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1669110859, now seen corresponding path program 1 times [2022-11-26 00:43:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:08,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203987136] [2022-11-26 00:43:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:43:08,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203987136] [2022-11-26 00:43:08,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203987136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:08,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:08,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885402133] [2022-11-26 00:43:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:08,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:08,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:08,330 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:08,444 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2022-11-26 00:43:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:43:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:08,447 INFO L225 Difference]: With dead ends: 119 [2022-11-26 00:43:08,447 INFO L226 Difference]: Without dead ends: 119 [2022-11-26 00:43:08,453 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 [2022-11-26 00:43:08,456 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 97 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:08,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-26 00:43:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2022-11-26 00:43:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-26 00:43:08,476 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 11 [2022-11-26 00:43:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:08,476 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-26 00:43:08,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-26 00:43:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:43:08,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:08,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:43:08,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1669110860, now seen corresponding path program 1 times [2022-11-26 00:43:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:08,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201556485] [2022-11-26 00:43:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:08,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:08,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201556485] [2022-11-26 00:43:08,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201556485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:08,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823168015] [2022-11-26 00:43:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:08,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:08,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:08,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:43:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:08,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:43:08,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823168015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552486910] [2022-11-26 00:43:08,906 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:43:08,914 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:08,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:08,924 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:08,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:43:09,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:43:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,060 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 [2022-11-26 00:43:09,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,134 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 [2022-11-26 00:43:09,158 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 [2022-11-26 00:43:09,168 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 [2022-11-26 00:43:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:09,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:09,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:09,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:09,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:09,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,404 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 [2022-11-26 00:43:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,496 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 [2022-11-26 00:43:09,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,521 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 [2022-11-26 00:43:09,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,544 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 [2022-11-26 00:43:09,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,599 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 [2022-11-26 00:43:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,630 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 [2022-11-26 00:43:09,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,655 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 [2022-11-26 00:43:09,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,810 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 00:43:09,811 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 [2022-11-26 00:43:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,855 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-26 00:43:09,856 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 [2022-11-26 00:43:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:09,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:09,906 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-26 00:43:09,906 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 [2022-11-26 00:43:10,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,102 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 [2022-11-26 00:43:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,179 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 [2022-11-26 00:43:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,207 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 [2022-11-26 00:43:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,229 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 [2022-11-26 00:43:10,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,292 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 [2022-11-26 00:43:10,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,316 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 [2022-11-26 00:43:10,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,361 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 [2022-11-26 00:43:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,502 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-26 00:43:10,502 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 [2022-11-26 00:43:10,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,548 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 00:43:10,549 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 [2022-11-26 00:43:10,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:10,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:10,597 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-26 00:43:10,598 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 [2022-11-26 00:43:11,046 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-26 00:43:11,046 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 [2022-11-26 00:43:11,462 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-26 00:43:11,463 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 [2022-11-26 00:43:11,510 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-26 00:43:11,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-26 00:43:11,554 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-26 00:43:11,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 387 [2022-11-26 00:43:11,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:43:15,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [552486910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:15,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:43:15,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-11-26 00:43:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269956636] [2022-11-26 00:43:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:15,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:43:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:43:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:43:15,075 INFO L87 Difference]: Start difference. First operand 109 states and 120 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) [2022-11-26 00:43:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:16,121 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-11-26 00:43:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:43:16,121 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 [2022-11-26 00:43:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:16,122 INFO L225 Difference]: With dead ends: 120 [2022-11-26 00:43:16,122 INFO L226 Difference]: Without dead ends: 120 [2022-11-26 00:43:16,123 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 [2022-11-26 00:43:16,123 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:16,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:43:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-26 00:43:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2022-11-26 00:43:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 2.0) internal successors, (128), 115 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2022-11-26 00:43:16,136 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 11 [2022-11-26 00:43:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:16,137 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2022-11-26 00:43:16,137 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) [2022-11-26 00:43:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2022-11-26 00:43:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:43:16,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:16,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:43:16,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:16,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:16,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1653804392, now seen corresponding path program 1 times [2022-11-26 00:43:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:16,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459214417] [2022-11-26 00:43:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:16,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:16,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459214417] [2022-11-26 00:43:16,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459214417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:16,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332311029] [2022-11-26 00:43:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:16,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:16,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:16,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:16,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:43:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:16,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:43:16,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:16,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:43:16,693 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:43:16,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:43:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:16,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:16,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332311029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:16,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1904303007] [2022-11-26 00:43:16,856 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 00:43:16,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:16,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:16,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:16,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:43:16,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:43:16,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,924 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 [2022-11-26 00:43:16,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:16,986 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 [2022-11-26 00:43:17,002 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 [2022-11-26 00:43:17,012 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 [2022-11-26 00:43:17,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:17,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:17,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:17,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:17,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:17,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:17,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,203 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 [2022-11-26 00:43:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,251 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 [2022-11-26 00:43:17,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,277 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 [2022-11-26 00:43:17,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,295 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 [2022-11-26 00:43:17,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,334 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 [2022-11-26 00:43:17,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,360 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 [2022-11-26 00:43:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,379 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 [2022-11-26 00:43:17,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:17,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:17,519 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:43:17,520 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 [2022-11-26 00:43:17,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:17,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:17,568 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:43:17,569 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 [2022-11-26 00:43:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:17,603 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 00:43:17,604 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 [2022-11-26 00:43:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,736 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 [2022-11-26 00:43:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,791 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 [2022-11-26 00:43:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,810 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 [2022-11-26 00:43:17,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,832 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 [2022-11-26 00:43:17,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,880 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 [2022-11-26 00:43:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,905 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 [2022-11-26 00:43:17,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:17,924 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 [2022-11-26 00:43:18,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:18,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:18,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:18,039 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:43:18,039 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 [2022-11-26 00:43:18,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:18,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:18,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:18,072 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 00:43:18,073 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 [2022-11-26 00:43:18,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:18,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:18,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:18,107 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-26 00:43:18,108 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 [2022-11-26 00:43:18,484 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-26 00:43:18,484 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 [2022-11-26 00:43:18,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:18,775 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 [2022-11-26 00:43:18,815 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-26 00:43:18,816 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 [2022-11-26 00:43:18,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:18,840 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 [2022-11-26 00:43:18,908 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:43:22,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1904303007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:22,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:43:22,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-11-26 00:43:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285186840] [2022-11-26 00:43:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:22,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:43:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:43:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:43:22,427 INFO L87 Difference]: Start difference. First operand 116 states and 128 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) [2022-11-26 00:43:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:23,703 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2022-11-26 00:43:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:43:23,705 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 [2022-11-26 00:43:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:23,706 INFO L225 Difference]: With dead ends: 118 [2022-11-26 00:43:23,706 INFO L226 Difference]: Without dead ends: 118 [2022-11-26 00:43:23,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:43:23,707 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:23,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 197 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:43:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-26 00:43:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-11-26 00:43:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 116 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2022-11-26 00:43:23,711 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 15 [2022-11-26 00:43:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:23,712 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2022-11-26 00:43:23,712 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) [2022-11-26 00:43:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2022-11-26 00:43:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:43:23,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:23,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:23,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:23,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1644873912, now seen corresponding path program 1 times [2022-11-26 00:43:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:23,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028563256] [2022-11-26 00:43:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:24,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:24,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028563256] [2022-11-26 00:43:24,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028563256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:24,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:24,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814357658] [2022-11-26 00:43:24,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:24,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:24,049 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:24,142 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2022-11-26 00:43:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:43:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:24,144 INFO L225 Difference]: With dead ends: 114 [2022-11-26 00:43:24,144 INFO L226 Difference]: Without dead ends: 114 [2022-11-26 00:43:24,144 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 [2022-11-26 00:43:24,145 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 97 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:24,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 64 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-26 00:43:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-26 00:43:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 65 states have (on average 1.9384615384615385) internal successors, (126), 113 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2022-11-26 00:43:24,150 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 19 [2022-11-26 00:43:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2022-11-26 00:43:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2022-11-26 00:43:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:43:24,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:24,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:43:24,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1156837450, now seen corresponding path program 1 times [2022-11-26 00:43:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:24,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198279975] [2022-11-26 00:43:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:43:24,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198279975] [2022-11-26 00:43:24,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198279975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:24,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600802675] [2022-11-26 00:43:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:24,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:24,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:24,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:43:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:24,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-26 00:43:24,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:24,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:43:24,863 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 00:43:24,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-26 00:43:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:24,981 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 16 treesize of output 18 [2022-11-26 00:43:25,035 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:43:25,036 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 [2022-11-26 00:43:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:25,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:25,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600802675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988635256] [2022-11-26 00:43:25,399 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-26 00:43:25,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:25,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:25,399 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:25,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:43:25,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:43:25,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,471 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 [2022-11-26 00:43:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,507 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 [2022-11-26 00:43:25,518 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 [2022-11-26 00:43:25,530 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 [2022-11-26 00:43:25,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:25,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:25,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:25,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:25,646 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 23 treesize of output 22 [2022-11-26 00:43:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,725 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 [2022-11-26 00:43:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,780 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 [2022-11-26 00:43:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,796 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 [2022-11-26 00:43:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,816 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 [2022-11-26 00:43:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,851 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 [2022-11-26 00:43:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,867 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 [2022-11-26 00:43:25,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,888 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 [2022-11-26 00:43:25,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,935 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 [2022-11-26 00:43:25,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,960 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 [2022-11-26 00:43:25,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,983 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 [2022-11-26 00:43:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:26,063 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 [2022-11-26 00:43:26,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:26,089 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 [2022-11-26 00:43:26,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,118 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 [2022-11-26 00:43:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,483 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-26 00:43:26,484 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 [2022-11-26 00:43:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,564 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 [2022-11-26 00:43:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,583 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 [2022-11-26 00:43:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,603 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 [2022-11-26 00:43:26,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,642 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 [2022-11-26 00:43:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,666 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 [2022-11-26 00:43:26,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,690 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 [2022-11-26 00:43:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,736 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 [2022-11-26 00:43:26,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,754 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 [2022-11-26 00:43:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,781 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 [2022-11-26 00:43:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,862 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 [2022-11-26 00:43:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,884 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 [2022-11-26 00:43:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,913 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 [2022-11-26 00:43:26,976 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 [2022-11-26 00:43:26,985 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 [2022-11-26 00:43:27,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:27,010 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 [2022-11-26 00:43:27,021 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 [2022-11-26 00:43:27,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:27,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:43:27,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:27,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:27,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:43:27,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:27,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,127 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 [2022-11-26 00:43:27,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,151 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:43:27,153 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 [2022-11-26 00:43:27,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,182 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-26 00:43:27,182 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 [2022-11-26 00:43:27,280 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 [2022-11-26 00:43:27,289 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 [2022-11-26 00:43:27,308 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 [2022-11-26 00:43:27,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:27,324 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 [2022-11-26 00:43:27,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:43:27,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:27,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:43:27,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:27,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:27,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,459 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:43:27,459 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 [2022-11-26 00:43:27,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,473 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 [2022-11-26 00:43:27,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,500 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-26 00:43:27,500 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 [2022-11-26 00:43:27,617 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 [2022-11-26 00:43:27,628 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 [2022-11-26 00:43:27,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:43:27,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:43:27,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:43:27,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:43:27,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:27,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:43:27,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:27,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:43:27,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,907 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:43:27,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:43:27,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,986 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:43:27,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:43:28,043 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 [2022-11-26 00:43:28,052 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 [2022-11-26 00:43:28,076 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 [2022-11-26 00:43:28,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:28,092 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 [2022-11-26 00:43:28,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:28,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:28,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:28,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:28,174 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:43:28,175 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 [2022-11-26 00:43:28,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:28,280 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 [2022-11-26 00:43:28,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:28,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:28,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:28,301 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:43:28,301 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 [2022-11-26 00:43:28,350 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 [2022-11-26 00:43:28,406 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:43:32,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2453#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (= |ULTIMATE.start_main_~mid_index~0#1| (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2))) (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_int| |ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset|) |ULTIMATE.start_node_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_insert_#in~head#1.offset|) (= |ULTIMATE.start_node_create_#res#1.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~data#1| |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~index#1| |ULTIMATE.start_main_~mid_index~0#1|) (= 12 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= |ULTIMATE.start_main_~uneq~0#1| |ULTIMATE.start_dll_insert_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_node_create_#res#1.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_dll_insert_#in~head#1.base| |ULTIMATE.start_dll_insert_~head#1.base|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_node_create_#in~data#1| |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| |ULTIMATE.start_node_create_#res#1.offset|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (not (= (select |#valid| |ULTIMATE.start_dll_insert_~head#1.base|) 1)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_node_create_~temp~0#1.base|) (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8)) 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_insert_~index#1| |ULTIMATE.start_dll_insert_#in~index#1|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (not (= |ULTIMATE.start_node_create_~temp~0#1.base| 0)) (= |ULTIMATE.start_dll_insert_~head#1.offset| |ULTIMATE.start_dll_insert_#in~head#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-26 00:43:32,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:43:32,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:43:32,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-26 00:43:32,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144134941] [2022-11-26 00:43:32,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:43:32,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:43:32,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:32,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:43:32,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:43:32,207 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:32,415 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-11-26 00:43:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:43:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-26 00:43:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:32,417 INFO L225 Difference]: With dead ends: 117 [2022-11-26 00:43:32,417 INFO L226 Difference]: Without dead ends: 117 [2022-11-26 00:43:32,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:43:32,419 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 635 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:32,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 79 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:43:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-26 00:43:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2022-11-26 00:43:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 1.8307692307692307) internal successors, (119), 106 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-11-26 00:43:32,424 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 22 [2022-11-26 00:43:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:32,424 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-11-26 00:43:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-11-26 00:43:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:43:32,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:32,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:32,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:43:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-26 00:43:32,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1156837451, now seen corresponding path program 1 times [2022-11-26 00:43:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:32,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299936021] [2022-11-26 00:43:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:43:33,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299936021] [2022-11-26 00:43:33,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299936021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884896543] [2022-11-26 00:43:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:33,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:33,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:33,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:43:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:33,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-26 00:43:33,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:33,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:43:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:33,380 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 [2022-11-26 00:43:33,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:33,430 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 [2022-11-26 00:43:33,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:33,494 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 [2022-11-26 00:43:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:33,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:43:33,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884896543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:33,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:43:33,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-11-26 00:43:33,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302320620] [2022-11-26 00:43:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:33,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:33,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:43:33,517 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:33,652 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-11-26 00:43:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:43:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-26 00:43:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:33,653 INFO L225 Difference]: With dead ends: 100 [2022-11-26 00:43:33,653 INFO L226 Difference]: Without dead ends: 100 [2022-11-26 00:43:33,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:43:33,654 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 164 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:33,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 51 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-26 00:43:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-26 00:43:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-11-26 00:43:33,658 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 22 [2022-11-26 00:43:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:33,659 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-11-26 00:43:33,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-11-26 00:43:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:43:33,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:33,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:43:33,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:33,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:43:33,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 385288452, now seen corresponding path program 1 times [2022-11-26 00:43:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:33,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654070699] [2022-11-26 00:43:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:33,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:33,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654070699] [2022-11-26 00:43:33,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654070699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:33,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:33,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:43:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459913334] [2022-11-26 00:43:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:43:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:43:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:33,972 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:34,003 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2022-11-26 00:43:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:43:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-26 00:43:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:34,004 INFO L225 Difference]: With dead ends: 94 [2022-11-26 00:43:34,004 INFO L226 Difference]: Without dead ends: 92 [2022-11-26 00:43:34,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:34,005 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 171 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:34,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 93 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-26 00:43:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-26 00:43:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 91 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-26 00:43:34,009 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 23 [2022-11-26 00:43:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:34,009 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-26 00:43:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-26 00:43:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:43:34,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:34,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:43:34,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash -675566594, now seen corresponding path program 1 times [2022-11-26 00:43:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666504768] [2022-11-26 00:43:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:43:34,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:34,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666504768] [2022-11-26 00:43:34,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666504768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:34,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:34,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:43:34,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859917069] [2022-11-26 00:43:34,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:34,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:43:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:34,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:43:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:43:34,351 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:34,686 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2022-11-26 00:43:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:43:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2022-11-26 00:43:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:34,687 INFO L225 Difference]: With dead ends: 168 [2022-11-26 00:43:34,688 INFO L226 Difference]: Without dead ends: 168 [2022-11-26 00:43:34,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:43:34,688 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 608 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:34,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 130 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:43:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-26 00:43:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 100. [2022-11-26 00:43:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.791044776119403) internal successors, (120), 99 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-11-26 00:43:34,692 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 24 [2022-11-26 00:43:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:34,692 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-11-26 00:43:34,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-11-26 00:43:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:43:34,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:34,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:34,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:43:34,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -675566593, now seen corresponding path program 1 times [2022-11-26 00:43:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:34,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32404301] [2022-11-26 00:43:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:43:35,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:35,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32404301] [2022-11-26 00:43:35,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32404301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:35,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:35,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:43:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891609776] [2022-11-26 00:43:35,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:35,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:43:35,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:43:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:43:35,240 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) 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) [2022-11-26 00:43:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:35,575 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2022-11-26 00:43:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:43:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) 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 [2022-11-26 00:43:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:35,576 INFO L225 Difference]: With dead ends: 158 [2022-11-26 00:43:35,576 INFO L226 Difference]: Without dead ends: 158 [2022-11-26 00:43:35,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:43:35,577 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 593 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 105 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 [2022-11-26 00:43:35,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 105 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:43:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-26 00:43:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2022-11-26 00:43:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2022-11-26 00:43:35,581 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 24 [2022-11-26 00:43:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:35,581 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2022-11-26 00:43:35,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) 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) [2022-11-26 00:43:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2022-11-26 00:43:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:43:35,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:35,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:35,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:43:35,582 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash 532451152, now seen corresponding path program 1 times [2022-11-26 00:43:35,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:35,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443937853] [2022-11-26 00:43:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:35,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:35,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443937853] [2022-11-26 00:43:35,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443937853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:35,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:35,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053418963] [2022-11-26 00:43:35,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:35,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:35,684 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:35,732 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-11-26 00:43:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2022-11-26 00:43:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:35,733 INFO L225 Difference]: With dead ends: 136 [2022-11-26 00:43:35,734 INFO L226 Difference]: Without dead ends: 136 [2022-11-26 00:43:35,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:35,735 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 59 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:35,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-26 00:43:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 95. [2022-11-26 00:43:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 94 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-26 00:43:35,739 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 25 [2022-11-26 00:43:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:35,740 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-26 00:43:35,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-26 00:43:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:43:35,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:35,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:35,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:43:35,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash -679271128, now seen corresponding path program 1 times [2022-11-26 00:43:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417635011] [2022-11-26 00:43:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:35,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:35,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417635011] [2022-11-26 00:43:35,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417635011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:35,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:35,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:43:35,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747822564] [2022-11-26 00:43:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:43:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:35,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:43:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:35,921 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2022-11-26 00:43:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:35,967 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2022-11-26 00:43:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:43:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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 [2022-11-26 00:43:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:35,968 INFO L225 Difference]: With dead ends: 92 [2022-11-26 00:43:35,968 INFO L226 Difference]: Without dead ends: 92 [2022-11-26 00:43:35,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:43:35,969 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:35,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 94 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-26 00:43:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-26 00:43:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.6557377049180328) internal successors, (101), 91 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-26 00:43:35,973 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 26 [2022-11-26 00:43:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:35,973 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-26 00:43:35,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2022-11-26 00:43:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-26 00:43:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:43:35,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:35,974 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] [2022-11-26 00:43:35,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:43:35,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash -673863548, now seen corresponding path program 1 times [2022-11-26 00:43:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214924930] [2022-11-26 00:43:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:36,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:36,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214924930] [2022-11-26 00:43:36,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214924930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:36,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:36,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777340949] [2022-11-26 00:43:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:36,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:36,059 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2022-11-26 00:43:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:36,152 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2022-11-26 00:43:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:43:36,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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 [2022-11-26 00:43:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:36,154 INFO L225 Difference]: With dead ends: 99 [2022-11-26 00:43:36,154 INFO L226 Difference]: Without dead ends: 99 [2022-11-26 00:43:36,154 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 [2022-11-26 00:43:36,155 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 142 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:36,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 64 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-26 00:43:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2022-11-26 00:43:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.6065573770491803) internal successors, (98), 88 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2022-11-26 00:43:36,158 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 26 [2022-11-26 00:43:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:36,159 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2022-11-26 00:43:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2022-11-26 00:43:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2022-11-26 00:43:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:43:36,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:36,160 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] [2022-11-26 00:43:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:43:36,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -673863547, now seen corresponding path program 1 times [2022-11-26 00:43:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:36,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824758613] [2022-11-26 00:43:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:36,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824758613] [2022-11-26 00:43:36,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824758613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:36,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:36,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979325294] [2022-11-26 00:43:36,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:36,277 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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) [2022-11-26 00:43:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:36,321 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2022-11-26 00:43:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:43:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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 [2022-11-26 00:43:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:36,323 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:43:36,323 INFO L226 Difference]: Without dead ends: 88 [2022-11-26 00:43:36,323 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 [2022-11-26 00:43:36,324 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 81 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:36,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 137 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-26 00:43:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-26 00:43:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.6) internal successors, (96), 87 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2022-11-26 00:43:36,328 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 26 [2022-11-26 00:43:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:36,328 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2022-11-26 00:43:36,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 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) [2022-11-26 00:43:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2022-11-26 00:43:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:43:36,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:36,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:36,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:43:36,330 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 417610598, now seen corresponding path program 1 times [2022-11-26 00:43:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:36,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516934283] [2022-11-26 00:43:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:36,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:36,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516934283] [2022-11-26 00:43:36,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516934283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:36,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:36,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399581466] [2022-11-26 00:43:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:36,425 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:36,583 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-11-26 00:43:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:43:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-26 00:43:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:36,584 INFO L225 Difference]: With dead ends: 136 [2022-11-26 00:43:36,584 INFO L226 Difference]: Without dead ends: 136 [2022-11-26 00:43:36,585 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 [2022-11-26 00:43:36,585 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 109 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:36,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 117 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-26 00:43:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2022-11-26 00:43:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-11-26 00:43:36,588 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 27 [2022-11-26 00:43:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:36,588 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-11-26 00:43:36,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-11-26 00:43:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:43:36,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:36,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:36,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:43:36,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash 417610599, now seen corresponding path program 1 times [2022-11-26 00:43:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:36,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672587018] [2022-11-26 00:43:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:43:36,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:36,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672587018] [2022-11-26 00:43:36,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672587018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:36,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:36,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:36,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689990931] [2022-11-26 00:43:36,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:36,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:36,743 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:36,856 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-11-26 00:43:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:43:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-26 00:43:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:36,864 INFO L225 Difference]: With dead ends: 86 [2022-11-26 00:43:36,864 INFO L226 Difference]: Without dead ends: 86 [2022-11-26 00:43:36,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:36,865 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 68 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:36,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 86 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-26 00:43:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-26 00:43:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2022-11-26 00:43:36,873 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 27 [2022-11-26 00:43:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:36,873 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2022-11-26 00:43:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2022-11-26 00:43:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-26 00:43:36,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:36,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:36,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:43:36,876 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash 61026715, now seen corresponding path program 1 times [2022-11-26 00:43:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219572636] [2022-11-26 00:43:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:43:37,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:37,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219572636] [2022-11-26 00:43:37,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219572636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:37,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:37,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:43:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10061567] [2022-11-26 00:43:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:43:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:43:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:37,065 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:37,158 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-11-26 00:43:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:43:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 28 [2022-11-26 00:43:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:37,159 INFO L225 Difference]: With dead ends: 83 [2022-11-26 00:43:37,160 INFO L226 Difference]: Without dead ends: 83 [2022-11-26 00:43:37,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:43:37,160 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 137 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:37,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 62 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-26 00:43:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-26 00:43:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2022-11-26 00:43:37,163 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 28 [2022-11-26 00:43:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:37,163 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2022-11-26 00:43:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:43:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2022-11-26 00:43:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:43:37,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:37,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:43:37,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:43:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1275737258, now seen corresponding path program 1 times [2022-11-26 00:43:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:37,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805847672] [2022-11-26 00:43:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:38,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805847672] [2022-11-26 00:43:38,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805847672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948751719] [2022-11-26 00:43:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:38,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:38,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:38,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:43:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-26 00:43:38,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:38,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:43:38,711 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:43:38,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:43:38,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:38,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:38,930 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:43:38,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-26 00:43:39,096 INFO L321 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2022-11-26 00:43:39,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 57 [2022-11-26 00:43:39,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:43:39,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,200 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:43:39,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-26 00:43:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:43:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,257 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:43:39,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-26 00:43:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,299 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:43:39,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2022-11-26 00:43:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:39,322 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 14 treesize of output 16 [2022-11-26 00:43:39,385 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 [2022-11-26 00:43:39,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:39,497 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 70 treesize of output 29 [2022-11-26 00:43:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:39,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:39,967 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 72 treesize of output 64 [2022-11-26 00:43:39,974 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 30 treesize of output 28 [2022-11-26 00:43:40,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:40,928 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 87 treesize of output 62 [2022-11-26 00:43:40,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:41,000 INFO L321 Elim1Store]: treesize reduction 23, result has 67.1 percent of original size [2022-11-26 00:43:41,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 530 treesize of output 478 [2022-11-26 00:43:41,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:41,041 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 449 treesize of output 417 [2022-11-26 00:43:41,059 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 368 treesize of output 352 [2022-11-26 00:43:42,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:42,571 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 64 treesize of output 54 [2022-11-26 00:43:42,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:42,611 INFO L321 Elim1Store]: treesize reduction 19, result has 54.8 percent of original size [2022-11-26 00:43:42,611 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 216 [2022-11-26 00:43:42,629 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 93 treesize of output 85 [2022-11-26 00:43:42,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:42,643 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 191 treesize of output 155 [2022-11-26 00:43:50,653 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 91 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:51,658 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-26 00:43:51,659 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 53 treesize of output 47 [2022-11-26 00:43:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:51,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948751719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657938059] [2022-11-26 00:43:51,710 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-26 00:43:51,710 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:51,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:51,711 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:51,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:43:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:43:51,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,771 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 [2022-11-26 00:43:51,801 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 [2022-11-26 00:43:51,826 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 [2022-11-26 00:43:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,838 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 [2022-11-26 00:43:51,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:51,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:51,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:51,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:51,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:51,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:43:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,016 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 [2022-11-26 00:43:52,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,069 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 [2022-11-26 00:43:52,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,089 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 [2022-11-26 00:43:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,109 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 [2022-11-26 00:43:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,151 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 [2022-11-26 00:43:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,168 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 [2022-11-26 00:43:52,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,190 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 [2022-11-26 00:43:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,227 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 [2022-11-26 00:43:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,250 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 [2022-11-26 00:43:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,276 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 [2022-11-26 00:43:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,334 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 [2022-11-26 00:43:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,352 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 [2022-11-26 00:43:52,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,379 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 [2022-11-26 00:43:52,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,712 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 [2022-11-26 00:43:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,763 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 [2022-11-26 00:43:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-26 00:43:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,798 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 [2022-11-26 00:43:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,836 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 [2022-11-26 00:43:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,852 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 [2022-11-26 00:43:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,878 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 [2022-11-26 00:43:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,920 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 [2022-11-26 00:43:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,943 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 [2022-11-26 00:43:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:52,963 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 [2022-11-26 00:43:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,016 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 [2022-11-26 00:43:53,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,037 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 [2022-11-26 00:43:53,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,058 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 [2022-11-26 00:43:53,369 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 [2022-11-26 00:43:53,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:43:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:43:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:43:53,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:43:53,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:43:53,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:53,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:43:53,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:53,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:43:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:53,631 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:43:53,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:43:53,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:53,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:53,677 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:43:53,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:43:53,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:53,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:53,887 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 19 treesize of output 1 [2022-11-26 00:43:53,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:53,978 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-26 00:43:53,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:43:53,993 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 19 treesize of output 1 [2022-11-26 00:43:54,031 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:43:54,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:43:54,105 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:43:54,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:43:54,123 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 19 treesize of output 1 [2022-11-26 00:43:54,164 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:43:54,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-26 00:43:54,297 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 [2022-11-26 00:43:54,306 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 [2022-11-26 00:43:54,341 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 [2022-11-26 00:43:54,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:43:54,363 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 [2022-11-26 00:43:54,399 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 19 treesize of output 1 [2022-11-26 00:43:54,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:54,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:43:54,459 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 [2022-11-26 00:43:54,469 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 [2022-11-26 00:43:54,485 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 19 treesize of output 1 [2022-11-26 00:43:54,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:44:02,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5312#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (not (= (select |#valid| |ULTIMATE.start_dll_insert_~last~0#1.base|) 1)) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-26 00:44:02,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:44:02,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:44:02,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 37 [2022-11-26 00:44:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28106841] [2022-11-26 00:44:02,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:44:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-26 00:44:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:44:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-26 00:44:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=3131, Unknown=1, NotChecked=0, Total=3422 [2022-11-26 00:44:02,014 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:44:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:44:06,264 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2022-11-26 00:44:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:44:06,265 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-26 00:44:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:44:06,266 INFO L225 Difference]: With dead ends: 93 [2022-11-26 00:44:06,266 INFO L226 Difference]: Without dead ends: 93 [2022-11-26 00:44:06,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=508, Invalid=4321, Unknown=1, NotChecked=0, Total=4830 [2022-11-26 00:44:06,268 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 472 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:44:06,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 456 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:44:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-26 00:44:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2022-11-26 00:44:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.5) internal successors, (90), 81 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:44:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-11-26 00:44:06,271 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 31 [2022-11-26 00:44:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:44:06,272 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-11-26 00:44:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:44:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-11-26 00:44:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:44:06,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:44:06,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:44:06,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:44:06,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:44:06,483 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:44:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:44:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1275737259, now seen corresponding path program 1 times [2022-11-26 00:44:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:44:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622322694] [2022-11-26 00:44:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:44:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:44:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:44:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:44:08,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:44:08,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622322694] [2022-11-26 00:44:08,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622322694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:44:08,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621185349] [2022-11-26 00:44:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:44:08,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:44:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:44:08,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:44:08,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:44:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:44:08,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-26 00:44:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:44:08,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:44:08,716 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:44:08,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:44:08,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:44:08,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:44:08,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:44:08,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:44:09,044 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:44:09,044 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 62 [2022-11-26 00:44:09,060 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 50 treesize of output 48 [2022-11-26 00:44:09,221 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-26 00:44:09,222 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 28 treesize of output 30 [2022-11-26 00:44:09,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 32 [2022-11-26 00:44:09,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,341 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:44:09,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-26 00:44:09,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,352 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-26 00:44:09,352 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 59 treesize of output 52 [2022-11-26 00:44:09,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,404 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:44:09,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-26 00:44:09,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,415 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-26 00:44:09,416 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 59 treesize of output 52 [2022-11-26 00:44:09,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,458 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-26 00:44:09,458 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 59 treesize of output 52 [2022-11-26 00:44:09,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:44:09,474 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-26 00:44:09,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2022-11-26 00:44:09,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:44:09,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:09,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 52 [2022-11-26 00:44:09,643 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-26 00:44:09,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 28 [2022-11-26 00:44:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:44:09,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:44:09,832 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1587 (Array Int Int)) (v_ArrVal_1586 (Array Int Int))) (<= 0 (+ 8 (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1587))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1586) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (+ (select (select .cse0 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4)))))) (forall ((v_ArrVal_1587 (Array Int Int)) (v_ArrVal_1586 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1587)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1586))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|)) (.cse3 (+ (select (select .cse1 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 4))) (<= (+ 12 (select (select .cse1 .cse2) .cse3)) (select |c_#length| (select (select .cse4 .cse2) .cse3))))))) is different from false [2022-11-26 00:44:12,223 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:12,224 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 250 treesize of output 254 [2022-11-26 00:44:13,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:13,824 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 107 treesize of output 82 [2022-11-26 00:44:13,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:13,838 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 77 treesize of output 67 [2022-11-26 00:44:13,988 INFO L321 Elim1Store]: treesize reduction 27, result has 85.5 percent of original size [2022-11-26 00:44:13,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 531 treesize of output 585 [2022-11-26 00:44:14,066 INFO L321 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2022-11-26 00:44:14,066 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 926 treesize of output 891 [2022-11-26 00:44:14,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:14,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 620 [2022-11-26 00:44:14,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:14,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 636 treesize of output 658 [2022-11-26 00:44:14,289 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 373 treesize of output 341 [2022-11-26 00:44:14,321 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 369 treesize of output 345 [2022-11-26 00:44:35,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:35,761 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 109 treesize of output 99 [2022-11-26 00:44:35,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:35,780 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 94 treesize of output 69 [2022-11-26 00:44:35,814 INFO L321 Elim1Store]: treesize reduction 3, result has 76.9 percent of original size [2022-11-26 00:44:35,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 332 [2022-11-26 00:44:36,975 INFO L321 Elim1Store]: treesize reduction 560, result has 41.3 percent of original size [2022-11-26 00:44:36,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 65 case distinctions, treesize of input 9442 treesize of output 8593 [2022-11-26 00:44:37,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:37,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 8164 treesize of output 7154 [2022-11-26 00:44:37,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:44:37,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7067 treesize of output 6805 [2022-11-26 00:44:37,717 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 6693 treesize of output 6291 [2022-11-26 00:44:37,832 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 6353 treesize of output 5881 [2022-11-26 00:45:15,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:15,829 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 109 treesize of output 99 [2022-11-26 00:45:15,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:15,848 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 94 treesize of output 69 [2022-11-26 00:45:15,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:15,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 335 [2022-11-26 00:45:17,020 INFO L321 Elim1Store]: treesize reduction 519, result has 45.6 percent of original size [2022-11-26 00:45:17,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 65 case distinctions, treesize of input 9442 treesize of output 8634 [2022-11-26 00:45:17,218 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 4911 treesize of output 4439 [2022-11-26 00:45:17,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:17,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7729 treesize of output 6717 [2022-11-26 00:45:17,694 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 6531 treesize of output 6129 [2022-11-26 00:45:17,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:17,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6246 treesize of output 5982 [2022-11-26 00:45:29,729 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:45:29,730 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 22 treesize of output 18 [2022-11-26 00:45:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:29,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621185349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070470282] [2022-11-26 00:45:29,780 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-26 00:45:29,781 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:45:29,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:45:29,781 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:45:29,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:45:29,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:45:29,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,836 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 [2022-11-26 00:45:29,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:45:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,882 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 [2022-11-26 00:45:29,893 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 [2022-11-26 00:45:29,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:45:29,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:29,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:29,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:45:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:29,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:45:29,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:45:30,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,056 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 [2022-11-26 00:45:30,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,094 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 [2022-11-26 00:45:30,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,117 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 [2022-11-26 00:45:30,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,135 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 [2022-11-26 00:45:30,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,162 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 [2022-11-26 00:45:30,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,187 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 [2022-11-26 00:45:30,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,213 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 [2022-11-26 00:45:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,248 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 [2022-11-26 00:45:30,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,267 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 [2022-11-26 00:45:30,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,305 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 [2022-11-26 00:45:30,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:30,368 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 [2022-11-26 00:45:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:30,392 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 [2022-11-26 00:45:30,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,419 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 [2022-11-26 00:45:30,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,739 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 [2022-11-26 00:45:30,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,784 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 [2022-11-26 00:45:30,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,800 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 [2022-11-26 00:45:30,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,820 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 [2022-11-26 00:45:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,852 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 [2022-11-26 00:45:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,872 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 [2022-11-26 00:45:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,897 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 [2022-11-26 00:45:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-26 00:45:30,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,953 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 [2022-11-26 00:45:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:30,971 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 [2022-11-26 00:45:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,030 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 [2022-11-26 00:45:31,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,048 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 [2022-11-26 00:45:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,066 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 [2022-11-26 00:45:31,292 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 [2022-11-26 00:45:31,307 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 [2022-11-26 00:45:31,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:45:31,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:45:31,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:45:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:31,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:45:31,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:45:31,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:31,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:45:31,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:45:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:31,571 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:45:31,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:45:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:31,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:31,609 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:45:31,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:45:31,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:31,774 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 19 treesize of output 1 [2022-11-26 00:45:31,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:31,841 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:45:31,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:45:31,863 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 19 treesize of output 1 [2022-11-26 00:45:31,893 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-26 00:45:31,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:45:31,947 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:45:31,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-26 00:45:31,968 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 19 treesize of output 1 [2022-11-26 00:45:32,012 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:45:32,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:45:32,146 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 [2022-11-26 00:45:32,154 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 [2022-11-26 00:45:32,183 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 [2022-11-26 00:45:32,191 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 [2022-11-26 00:45:32,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:45:32,241 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 19 treesize of output 1 [2022-11-26 00:45:32,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:32,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:32,285 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 [2022-11-26 00:45:32,295 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 [2022-11-26 00:45:32,307 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 19 treesize of output 1 [2022-11-26 00:45:32,329 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:45:39,905 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5747#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (or (not (<= (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_insert_~last~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)))) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-26 00:45:39,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:45:39,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:45:39,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2022-11-26 00:45:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058784457] [2022-11-26 00:45:39,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:39,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-26 00:45:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:45:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-26 00:45:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2921, Unknown=3, NotChecked=110, Total=3306 [2022-11-26 00:45:39,909 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:49,390 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 202 DAG size of output: 186 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:54,374 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-11-26 00:45:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:45:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-26 00:45:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:54,376 INFO L225 Difference]: With dead ends: 91 [2022-11-26 00:45:54,376 INFO L226 Difference]: Without dead ends: 91 [2022-11-26 00:45:54,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=566, Invalid=4547, Unknown=3, NotChecked=140, Total=5256 [2022-11-26 00:45:54,378 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 486 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:54,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 295 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1002 Invalid, 0 Unknown, 96 Unchecked, 2.8s Time] [2022-11-26 00:45:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-26 00:45:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2022-11-26 00:45:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 80 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2022-11-26 00:45:54,381 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 31 [2022-11-26 00:45:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:54,381 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2022-11-26 00:45:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2022-11-26 00:45:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:45:54,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:54,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:54,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-26 00:45:54,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:54,589 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:45:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2110620606, now seen corresponding path program 1 times [2022-11-26 00:45:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:54,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723638798] [2022-11-26 00:45:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:54,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:45:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723638798] [2022-11-26 00:45:54,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723638798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:45:54,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412499227] [2022-11-26 00:45:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:54,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:54,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:45:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:55,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-26 00:45:55,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:55,146 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 [2022-11-26 00:45:55,164 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 [2022-11-26 00:45:55,219 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 [2022-11-26 00:45:55,245 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 [2022-11-26 00:45:55,294 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:45:55,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 00:45:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:45:55,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:45:55,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412499227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:55,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [624818352] [2022-11-26 00:45:55,517 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-26 00:45:55,517 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:45:55,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:45:55,517 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:45:55,517 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:45:55,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:45:55,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,578 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 [2022-11-26 00:45:55,601 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 [2022-11-26 00:45:55,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,612 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 [2022-11-26 00:45:55,623 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 [2022-11-26 00:45:55,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:55,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:55,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:45:55,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:45:55,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:45:55,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:45:55,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,819 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 [2022-11-26 00:45:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,888 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 [2022-11-26 00:45:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,910 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 [2022-11-26 00:45:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,926 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 [2022-11-26 00:45:55,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-26 00:45:55,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:55,987 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 [2022-11-26 00:45:56,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,004 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 [2022-11-26 00:45:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,050 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 [2022-11-26 00:45:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,067 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 [2022-11-26 00:45:56,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,089 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 [2022-11-26 00:45:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,155 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 [2022-11-26 00:45:56,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,178 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 [2022-11-26 00:45:56,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,197 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 [2022-11-26 00:45:56,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,427 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 [2022-11-26 00:45:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,477 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 [2022-11-26 00:45:56,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,496 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 [2022-11-26 00:45:56,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,514 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 [2022-11-26 00:45:56,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,551 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 [2022-11-26 00:45:56,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,568 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 [2022-11-26 00:45:56,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,591 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 [2022-11-26 00:45:56,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,628 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 [2022-11-26 00:45:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,649 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 [2022-11-26 00:45:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,672 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 [2022-11-26 00:45:56,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,735 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 [2022-11-26 00:45:56,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,756 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 [2022-11-26 00:45:56,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,777 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 [2022-11-26 00:45:57,020 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 [2022-11-26 00:45:57,034 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 [2022-11-26 00:45:57,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:45:57,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:45:57,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:45:57,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:57,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:45:57,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:45:57,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:57,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:45:57,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:45:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:57,288 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:45:57,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:45:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:57,331 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:45:57,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:45:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,475 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 17 treesize of output 17 [2022-11-26 00:45:57,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,491 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 17 treesize of output 17 [2022-11-26 00:45:57,503 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 19 treesize of output 1 [2022-11-26 00:45:57,567 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 [2022-11-26 00:45:57,574 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 [2022-11-26 00:45:57,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:45:57,601 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 [2022-11-26 00:45:57,609 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 [2022-11-26 00:45:57,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:57,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:45:57,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:57,707 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:45:57,708 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 [2022-11-26 00:45:57,759 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 [2022-11-26 00:45:57,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:57,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:57,780 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:45:57,781 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 [2022-11-26 00:45:57,812 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 [2022-11-26 00:45:57,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:46:05,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6169#(and (<= (+ |ULTIMATE.start_dll_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_insert_~head#1.base|)) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) 0))) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|)) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) |ULTIMATE.start_dll_insert_#t~mem13#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_insert_#t~mem13#1.base|) 1)) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_insert_~new_node~0#1.base|)) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (= |ULTIMATE.start_dll_insert_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|)) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~head#1.base|) |ULTIMATE.start_dll_insert_~head#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (+ |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 4))) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_insert_~head#1.base|) 1) (<= 5 |ULTIMATE.start_node_create_~data#1|) (= |#NULL.base| 0))' at error location [2022-11-26 00:46:05,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:46:05,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:46:05,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2022-11-26 00:46:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834831840] [2022-11-26 00:46:05,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:46:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:46:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:46:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:46:05,177 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:05,858 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2022-11-26 00:46:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:46:05,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-26 00:46:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:05,859 INFO L225 Difference]: With dead ends: 113 [2022-11-26 00:46:05,860 INFO L226 Difference]: Without dead ends: 113 [2022-11-26 00:46:05,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2022-11-26 00:46:05,861 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 460 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:05,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 210 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:46:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-26 00:46:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 72. [2022-11-26 00:46:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.471698113207547) internal successors, (78), 71 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) [2022-11-26 00:46:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-11-26 00:46:05,863 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 32 [2022-11-26 00:46:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:05,863 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-11-26 00:46:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-11-26 00:46:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:46:05,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:05,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:05,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:46:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-26 00:46:06,071 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:46:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -671063491, now seen corresponding path program 1 times [2022-11-26 00:46:06,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:06,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960228762] [2022-11-26 00:46:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:06,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960228762] [2022-11-26 00:46:06,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960228762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424729535] [2022-11-26 00:46:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:06,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:06,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:06,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:46:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:06,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-26 00:46:06,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:07,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:07,295 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 24 treesize of output 24 [2022-11-26 00:46:07,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:07,331 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 24 treesize of output 24 [2022-11-26 00:46:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:07,376 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 24 treesize of output 24 [2022-11-26 00:46:07,677 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:46:07,677 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 28 treesize of output 29 [2022-11-26 00:46:07,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:07,755 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 24 treesize of output 24 [2022-11-26 00:46:07,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:07,772 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 24 treesize of output 24 [2022-11-26 00:46:07,861 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 25 treesize of output 13 [2022-11-26 00:46:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:07,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:10,351 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1918 (Array Int Int)) (v_ArrVal_1916 (Array Int Int)) (v_ArrVal_1915 (Array Int Int))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1915))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) v_ArrVal_1916)) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1918) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-26 00:46:10,395 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 205 treesize of output 181 [2022-11-26 00:46:10,401 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 176 treesize of output 166 [2022-11-26 00:46:10,405 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 166 treesize of output 162 [2022-11-26 00:46:10,410 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 162 treesize of output 154 [2022-11-26 00:46:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:10,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424729535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:10,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [440974150] [2022-11-26 00:46:10,609 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-26 00:46:10,609 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:10,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:10,609 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:10,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:10,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:46:10,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,662 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 [2022-11-26 00:46:10,686 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 [2022-11-26 00:46:10,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,698 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 [2022-11-26 00:46:10,708 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 [2022-11-26 00:46:10,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:10,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:10,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:10,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:10,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,871 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 [2022-11-26 00:46:10,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,924 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 [2022-11-26 00:46:10,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,940 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 [2022-11-26 00:46:10,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,960 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 [2022-11-26 00:46:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:10,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,000 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 [2022-11-26 00:46:11,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,021 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 [2022-11-26 00:46:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-26 00:46:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,086 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 [2022-11-26 00:46:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,104 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 [2022-11-26 00:46:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,122 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 [2022-11-26 00:46:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-26 00:46:11,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,189 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 [2022-11-26 00:46:11,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,210 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 [2022-11-26 00:46:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,455 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 [2022-11-26 00:46:11,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,511 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 [2022-11-26 00:46:11,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,528 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 [2022-11-26 00:46:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,546 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 [2022-11-26 00:46:11,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,579 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 [2022-11-26 00:46:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,599 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 [2022-11-26 00:46:11,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,633 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 [2022-11-26 00:46:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,671 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 [2022-11-26 00:46:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,688 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 [2022-11-26 00:46:11,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,714 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 [2022-11-26 00:46:11,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,777 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 [2022-11-26 00:46:11,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,797 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 [2022-11-26 00:46:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:11,826 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 [2022-11-26 00:46:12,055 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 [2022-11-26 00:46:12,079 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 [2022-11-26 00:46:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:46:12,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:46:12,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:12,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:12,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:12,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:12,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:12,322 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:12,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:12,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:12,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:12,363 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:12,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:12,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:12,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:12,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:12,584 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 19 treesize of output 1 [2022-11-26 00:46:12,615 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 19 treesize of output 1 [2022-11-26 00:46:12,669 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:46:12,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:46:12,705 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-26 00:46:12,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:12,770 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:12,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:46:12,821 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:12,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-26 00:46:12,851 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 19 treesize of output 1 [2022-11-26 00:46:13,120 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 [2022-11-26 00:46:13,127 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 [2022-11-26 00:46:13,145 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 [2022-11-26 00:46:13,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:13,160 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 [2022-11-26 00:46:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:13,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:13,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:13,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:13,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:13,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:13,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:13,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:13,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:46:24,851 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6628#(and (or (and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= 0 |ULTIMATE.start_main_~ptr~0#1.base|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|)) (and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_main_~mid_index~0#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_main_~mid_index~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)))' at error location [2022-11-26 00:46:24,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:46:24,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:46:24,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2022-11-26 00:46:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028067877] [2022-11-26 00:46:24,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:46:24,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-26 00:46:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-26 00:46:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2615, Unknown=16, NotChecked=104, Total=2970 [2022-11-26 00:46:24,854 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:27,321 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-11-26 00:46:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:46:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 00:46:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:27,322 INFO L225 Difference]: With dead ends: 127 [2022-11-26 00:46:27,322 INFO L226 Difference]: Without dead ends: 127 [2022-11-26 00:46:27,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=564, Invalid=3980, Unknown=16, NotChecked=132, Total=4692 [2022-11-26 00:46:27,324 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 988 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:27,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 433 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 882 Invalid, 1 Unknown, 114 Unchecked, 1.1s Time] [2022-11-26 00:46:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-26 00:46:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 73. [2022-11-26 00:46:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 72 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-26 00:46:27,327 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 34 [2022-11-26 00:46:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-26 00:46:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-26 00:46:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:46:27,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:27,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:46:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-26 00:46:27,528 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:46:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:27,529 INFO L85 PathProgramCache]: Analyzing trace with hash -671066915, now seen corresponding path program 1 times [2022-11-26 00:46:27,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:27,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301315556] [2022-11-26 00:46:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:28,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301315556] [2022-11-26 00:46:28,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301315556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252058837] [2022-11-26 00:46:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:28,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:28,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:28,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:28,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:46:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:28,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-26 00:46:28,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:29,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:46:29,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,088 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 16 treesize of output 18 [2022-11-26 00:46:29,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:46:29,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,122 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 16 treesize of output 18 [2022-11-26 00:46:29,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:46:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,152 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 16 treesize of output 18 [2022-11-26 00:46:29,475 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:46:29,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-26 00:46:29,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,484 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 29 treesize of output 29 [2022-11-26 00:46:29,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,555 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 31 treesize of output 31 [2022-11-26 00:46:29,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,564 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 29 treesize of output 29 [2022-11-26 00:46:29,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-26 00:46:29,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:29,591 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 29 treesize of output 29 [2022-11-26 00:46:29,667 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 32 treesize of output 20 [2022-11-26 00:46:29,671 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 26 treesize of output 14 [2022-11-26 00:46:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:29,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:29,787 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2101 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_2102 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) is different from false [2022-11-26 00:46:29,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:29,956 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 52 treesize of output 56 [2022-11-26 00:46:29,997 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_prenex_27) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_prenex_26) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_2098) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (+ |c_ULTIMATE.start_dll_insert_~last~0#1.offset| 1))) (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2097 (Array Int Int))) (= |c_ULTIMATE.start_dll_insert_~last~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_2097) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) is different from false [2022-11-26 00:46:30,750 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2096 (Array Int Int)) (v_ArrVal_2095 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (forall ((v_ArrVal_2102 (Array Int Int)) (v_ArrVal_2098 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2096))) (< (select (select (store (store .cse0 |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2098) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2102) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) 1)))))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2095 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| .cse1)) (forall ((v_ArrVal_2101 (Array Int Int)) (v_ArrVal_2097 (Array Int Int))) (= .cse1 (select (select (store (store .cse2 |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_ArrVal_2097) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2101) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) (forall ((|v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| Int) (v_ArrVal_2096 (Array Int Int)) (v_ArrVal_2095 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2095) |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|))) (forall ((v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (<= 0 (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2096) |v_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base_35| v_prenex_27) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_prenex_26) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))))) is different from false [2022-11-26 00:46:30,878 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 1451 treesize of output 1383 [2022-11-26 00:46:30,938 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 1370 treesize of output 1354 [2022-11-26 00:46:30,956 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 1354 treesize of output 1338 [2022-11-26 00:46:30,974 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 1338 treesize of output 1306 [2022-11-26 00:46:30,992 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 1306 treesize of output 1298 [2022-11-26 00:46:31,010 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 1298 treesize of output 1282 [2022-11-26 00:46:31,030 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 1839 treesize of output 1759 [2022-11-26 00:46:31,085 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 1669 treesize of output 1605 [2022-11-26 00:46:31,106 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 1605 treesize of output 1603 [2022-11-26 00:46:31,122 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 1603 treesize of output 1601 [2022-11-26 00:46:31,135 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 1601 treesize of output 1573 [2022-11-26 00:46:31,152 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 1573 treesize of output 1559 [2022-11-26 00:46:31,174 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 1559 treesize of output 1527 [2022-11-26 00:46:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:32,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252058837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:32,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1809705171] [2022-11-26 00:46:32,011 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-26 00:46:32,011 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:32,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:32,011 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:32,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:32,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:46:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,071 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 [2022-11-26 00:46:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,104 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 [2022-11-26 00:46:32,116 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 [2022-11-26 00:46:32,125 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 [2022-11-26 00:46:32,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:32,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:32,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:32,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:32,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:32,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:32,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,291 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 [2022-11-26 00:46:32,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,332 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 [2022-11-26 00:46:32,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,347 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 [2022-11-26 00:46:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,369 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 [2022-11-26 00:46:32,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,401 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 [2022-11-26 00:46:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,421 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 [2022-11-26 00:46:32,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,447 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 [2022-11-26 00:46:32,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-11-26 00:46:32,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,505 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 [2022-11-26 00:46:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,525 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 [2022-11-26 00:46:32,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,573 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 [2022-11-26 00:46:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,594 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 [2022-11-26 00:46:32,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,614 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 [2022-11-26 00:46:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,889 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 [2022-11-26 00:46:32,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,941 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 [2022-11-26 00:46:32,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,963 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 [2022-11-26 00:46:32,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:32,982 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 [2022-11-26 00:46:33,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,012 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 [2022-11-26 00:46:33,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,037 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 [2022-11-26 00:46:33,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,058 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 [2022-11-26 00:46:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,089 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 [2022-11-26 00:46:33,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,116 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 [2022-11-26 00:46:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,137 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 [2022-11-26 00:46:33,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-26 00:46:33,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,209 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 [2022-11-26 00:46:33,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,238 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 [2022-11-26 00:46:33,492 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 [2022-11-26 00:46:33,505 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 [2022-11-26 00:46:33,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:46:33,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:33,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,591 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 21 treesize of output 20 [2022-11-26 00:46:33,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:33,632 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:33,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:33,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:33,774 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:33,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:33,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:33,832 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:33,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:33,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:34,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:34,019 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 19 treesize of output 1 [2022-11-26 00:46:34,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:34,094 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:46:34,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:46:34,129 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-26 00:46:34,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:34,146 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 19 treesize of output 1 [2022-11-26 00:46:34,180 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 19 treesize of output 1 [2022-11-26 00:46:34,228 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:34,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:46:34,281 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:34,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-26 00:46:34,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:46:34,464 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 [2022-11-26 00:46:34,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:34,508 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 [2022-11-26 00:46:34,515 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 [2022-11-26 00:46:34,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:34,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:34,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:34,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:34,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:34,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:34,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:46:44,541 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7111#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)))) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.base| 0) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_main_~count~0#1| 0) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_insert_~last~0#1.offset|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-26 00:46:44,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:46:44,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:46:44,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2022-11-26 00:46:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851783011] [2022-11-26 00:46:44,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:46:44,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-26 00:46:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-26 00:46:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2637, Unknown=13, NotChecked=318, Total=3192 [2022-11-26 00:46:44,547 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:46,268 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2022-11-26 00:46:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:46:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 00:46:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:46,270 INFO L225 Difference]: With dead ends: 115 [2022-11-26 00:46:46,270 INFO L226 Difference]: Without dead ends: 115 [2022-11-26 00:46:46,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=420, Invalid=3485, Unknown=13, NotChecked=372, Total=4290 [2022-11-26 00:46:46,272 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 926 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:46,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 368 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 570 Invalid, 0 Unknown, 324 Unchecked, 0.8s Time] [2022-11-26 00:46:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-26 00:46:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2022-11-26 00:46:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 73 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) [2022-11-26 00:46:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-11-26 00:46:46,274 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2022-11-26 00:46:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:46,274 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-11-26 00:46:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:46:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-11-26 00:46:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-26 00:46:46,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:46,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:46,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:46:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:46,476 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:46:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 492853347, now seen corresponding path program 1 times [2022-11-26 00:46:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:46,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195251490] [2022-11-26 00:46:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:47,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:47,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195251490] [2022-11-26 00:46:47,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195251490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:47,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179337730] [2022-11-26 00:46:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:47,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:48,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:48,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:46:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:48,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-26 00:46:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:48,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:48,597 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 24 treesize of output 24 [2022-11-26 00:46:48,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:48,636 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 24 treesize of output 24 [2022-11-26 00:46:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:48,665 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 24 treesize of output 24 [2022-11-26 00:46:48,989 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 00:46:48,990 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 28 treesize of output 29 [2022-11-26 00:46:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:49,072 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 24 treesize of output 24 [2022-11-26 00:46:49,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:49,100 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 24 treesize of output 24 [2022-11-26 00:46:49,164 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:46:49,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2022-11-26 00:46:49,311 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 25 treesize of output 13 [2022-11-26 00:46:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:46:49,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:49,745 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (|ULTIMATE.start_dll_insert_~last~0#1.base| Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~snd_to_last~0#1.base| v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) is different from false [2022-11-26 00:46:49,785 WARN L837 $PredicateComparison]: unable to prove that (or (and (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0)) (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~last~0#1.base| v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-26 00:46:49,804 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_2291 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) v_ArrVal_2291) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0))) (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-26 00:46:49,823 WARN L837 $PredicateComparison]: unable to prove that (or (and (not (<= |c_ULTIMATE.start_main_~mid_index~0#1| 0)) (forall ((v_ArrVal_2291 (Array Int Int)) (v_ArrVal_2290 (Array Int Int)) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_subst_1 Int) (v_ArrVal_2293 (Array Int Int))) (not (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2290))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_dll_insert_~head#1.base|) |c_ULTIMATE.start_dll_insert_~head#1.offset|) v_ArrVal_2291)) |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2293))) (store .cse0 v_subst_1 (store (select .cse0 v_subst_1) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))) (not (< 0 |c_ULTIMATE.start_dll_insert_~index#1|))) is different from false [2022-11-26 00:46:49,930 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:49,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22823 treesize of output 22297 [2022-11-26 00:46:50,149 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 23946 treesize of output 22134 [2022-11-26 00:46:50,312 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 23798 treesize of output 22982 [2022-11-26 00:46:50,486 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 25062 treesize of output 24462 [2022-11-26 00:46:51,790 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-26 00:46:51,821 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 28 treesize of output 22 [2022-11-26 00:46:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-26 00:46:52,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179337730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827364398] [2022-11-26 00:46:52,078 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-26 00:46:52,078 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:52,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:52,079 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:52,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-26 00:46:52,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,132 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 [2022-11-26 00:46:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,161 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 [2022-11-26 00:46:52,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:46:52,183 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 [2022-11-26 00:46:52,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:52,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:52,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-26 00:46:52,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:52,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:52,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,362 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 [2022-11-26 00:46:52,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,421 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 [2022-11-26 00:46:52,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,440 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 [2022-11-26 00:46:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,459 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 [2022-11-26 00:46:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,492 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 [2022-11-26 00:46:52,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,508 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 [2022-11-26 00:46:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,539 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 [2022-11-26 00:46:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,574 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 [2022-11-26 00:46:52,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,596 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 [2022-11-26 00:46:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,613 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 [2022-11-26 00:46:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:52,659 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 [2022-11-26 00:46:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,683 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 [2022-11-26 00:46:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:52,715 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 [2022-11-26 00:46:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,051 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-26 00:46:53,051 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 [2022-11-26 00:46:53,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,115 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 [2022-11-26 00:46:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,136 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 [2022-11-26 00:46:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,154 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 [2022-11-26 00:46:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,197 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 [2022-11-26 00:46:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,224 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 [2022-11-26 00:46:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,245 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 [2022-11-26 00:46:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,279 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 [2022-11-26 00:46:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,302 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 [2022-11-26 00:46:53,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,323 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 [2022-11-26 00:46:53,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,374 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 [2022-11-26 00:46:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,399 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 [2022-11-26 00:46:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,421 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 [2022-11-26 00:46:53,473 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 [2022-11-26 00:46:53,482 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 [2022-11-26 00:46:53,496 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 [2022-11-26 00:46:53,504 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 [2022-11-26 00:46:53,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:53,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:53,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:53,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:53,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:53,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:53,618 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:46:53,618 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 [2022-11-26 00:46:53,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:53,647 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-26 00:46:53,648 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 [2022-11-26 00:46:53,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,662 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 [2022-11-26 00:46:53,716 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 [2022-11-26 00:46:53,723 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 [2022-11-26 00:46:53,739 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 [2022-11-26 00:46:53,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:53,759 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 [2022-11-26 00:46:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:53,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:53,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:53,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:53,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:53,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:53,878 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-26 00:46:53,878 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 [2022-11-26 00:46:53,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:53,905 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-26 00:46:53,905 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 [2022-11-26 00:46:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:53,921 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 [2022-11-26 00:46:54,002 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 [2022-11-26 00:46:54,020 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 [2022-11-26 00:46:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:46:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:46:54,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:54,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:54,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:54,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:46:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:54,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:54,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:54,273 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:54,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:54,303 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 11 treesize of output 7 [2022-11-26 00:46:54,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:54,350 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-26 00:46:54,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 39 [2022-11-26 00:46:54,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:54,517 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 19 treesize of output 1 [2022-11-26 00:46:54,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:54,572 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-26 00:46:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:54,616 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-26 00:46:54,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:46:54,639 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 19 treesize of output 1 [2022-11-26 00:46:54,717 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:54,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-26 00:46:54,779 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-26 00:46:54,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 42 [2022-11-26 00:46:54,801 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 19 treesize of output 1 [2022-11-26 00:46:54,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:54,942 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 19 treesize of output 1 [2022-11-26 00:46:54,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:55,201 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 [2022-11-26 00:46:55,208 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 [2022-11-26 00:46:55,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:46:55,233 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 [2022-11-26 00:46:55,242 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 [2022-11-26 00:46:55,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:55,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:55,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:55,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:46:55,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:55,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-26 00:46:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:55,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-26 00:46:55,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:47:05,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7582#(and (<= |ULTIMATE.start_main_~uneq~0#1| 5) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 5 |ULTIMATE.start_dll_insert_~data#1|) (= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8))) (<= 5 |ULTIMATE.start_main_~uneq~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_insert_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= 5 |ULTIMATE.start_node_create_#in~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (or (and (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~mid_index~0#1|)) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_insert_~data#1| 5) (<= 0 (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= 0 |ULTIMATE.start_node_create_#res#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= 5 |ULTIMATE.start_dll_insert_#in~data#1|) (<= |ULTIMATE.start_node_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_insert_#in~data#1| 5) (<= 0 |ULTIMATE.start_dll_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_insert_~head#1.offset| 0) (<= (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_insert_~last~0#1.base|)) (<= 0 |ULTIMATE.start_dll_insert_~head#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (<= 0 |ULTIMATE.start_dll_insert_~head#1.base|) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_node_create_#in~data#1| 5) (<= |#NULL.base| 0) (<= 0 (+ 4 |ULTIMATE.start_dll_insert_~snd_to_last~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8)) |ULTIMATE.start_dll_insert_~new_node~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_node_create_~data#1| 5) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (= (select |#valid| |ULTIMATE.start_dll_insert_~last~0#1.base|) 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_insert_~index#1| 0) (<= |ULTIMATE.start_dll_insert_~new_node~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_dll_insert_~new_node~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 5 |ULTIMATE.start_node_create_~data#1|))' at error location [2022-11-26 00:47:05,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:47:05,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:47:05,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 36 [2022-11-26 00:47:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140572734] [2022-11-26 00:47:05,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:47:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-26 00:47:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:47:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-26 00:47:05,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2845, Unknown=15, NotChecked=444, Total=3540 [2022-11-26 00:47:05,542 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:47:11,796 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-11-26 00:47:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:47:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-26 00:47:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:47:11,797 INFO L225 Difference]: With dead ends: 144 [2022-11-26 00:47:11,797 INFO L226 Difference]: Without dead ends: 144 [2022-11-26 00:47:11,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=735, Invalid=4816, Unknown=15, NotChecked=596, Total=6162 [2022-11-26 00:47:11,799 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1663 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:47:11,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 145 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 620 Invalid, 7 Unknown, 458 Unchecked, 1.0s Time] [2022-11-26 00:47:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-26 00:47:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 75. [2022-11-26 00:47:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 74 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) [2022-11-26 00:47:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-11-26 00:47:11,802 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 35 [2022-11-26 00:47:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:47:11,803 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-11-26 00:47:11,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.810810810810811) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-11-26 00:47:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-26 00:47:11,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:11,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:47:11,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:47:12,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-26 00:47:12,010 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-26 00:47:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash 492849922, now seen corresponding path program 1 times [2022-11-26 00:47:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:47:12,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754708804] [2022-11-26 00:47:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:47:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:47:12,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:47:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754708804] [2022-11-26 00:47:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754708804] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:47:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393326349] [2022-11-26 00:47:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:12,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:12,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:47:12,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d3a6ac-91b4-47c5-9045-06086ce8d74f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:47:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:13,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-26 00:47:13,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:13,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:47:13,437 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:47:13,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-26 00:47:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:47:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,543 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 24 treesize of output 24 [2022-11-26 00:47:13,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:47:13,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,577 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 24 treesize of output 24 [2022-11-26 00:47:13,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-26 00:47:13,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,606 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 24 treesize of output 24 [2022-11-26 00:47:13,689 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 [2022-11-26 00:47:13,870 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-11-26 00:47:13,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:13,930 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 24 treesize of output 24 [2022-11-26 00:47:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:14,014 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 16 treesize of output 18 [2022-11-26 00:47:14,101 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-26 00:47:14,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2022-11-26 00:47:14,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:47:14,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2022-11-26 00:47:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:47:14,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:14,464 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_insert_~last~0#1.base| Int) (|ULTIMATE.start_dll_insert_~last~0#1.offset| Int) (v_ArrVal_2491 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_insert_~new_node~0#1.base| v_ArrVal_2491))) (store .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base| (store (select .cse0 |ULTIMATE.start_dll_insert_~last~0#1.base|) (+ |ULTIMATE.start_dll_insert_~last~0#1.offset| 8) |c_ULTIMATE.start_dll_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1)) is different from false [2022-11-26 00:47:15,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:47:15,153 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 225348 treesize of output 211526 [2022-11-26 00:47:16,296 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 275148 treesize of output 265704 [2022-11-26 00:47:17,711 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 265700 treesize of output 260980 [2022-11-26 00:47:18,543 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 326580 treesize of output 314610 [2022-11-26 00:47:28,787 WARN L233 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 1162 DAG size of output: 1150 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 00:47:28,911 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 292600 treesize of output 284952 [2022-11-26 00:47:41,745 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 1148 DAG size of output: 1146 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)