./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh --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 b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- 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-2329fc7 [2022-12-14 05:45:41,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:45:41,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:45:41,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:45:41,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:45:41,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:45:41,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:45:41,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:45:41,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:45:41,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:45:41,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:45:41,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:45:41,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:45:41,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:45:41,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:45:41,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:45:41,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:45:41,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:45:41,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:45:41,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:45:41,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:45:41,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:45:41,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:45:41,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:45:41,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:45:41,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:45:41,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:45:41,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:45:41,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:45:41,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:45:41,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:45:41,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:45:41,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:45:41,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:45:41,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:45:41,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:45:41,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:45:41,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:45:41,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:45:41,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:45:41,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:45:41,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 05:45:41,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:45:41,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:45:41,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:45:41,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:45:41,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:45:41,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:45:41,881 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:45:41,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:45:41,882 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:45:41,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:45:41,889 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:45:41,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:45:41,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:45:41,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:45:41,890 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:45:41,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:45:41,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:45:41,890 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:45:41,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 05:45:41,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 05:45:41,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:45:41,892 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 05:45:41,893 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 05:45:41,893 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 05:45:41,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:45:41,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:45:41,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:45:41,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:45:41,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:45:41,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:45:41,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:45:41,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:45:41,895 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:45:41,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:45:41,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:45:41,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:45:41,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:45:41,896 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_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2022-12-14 05:45:42,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:45:42,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:45:42,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:45:42,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:45:42,112 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:45:42,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2022-12-14 05:45:44,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:45:44,968 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:45:44,969 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2022-12-14 05:45:44,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/data/7c4f9471f/0f2c9f97e23f42b7b3c4e33f01bfbe3a/FLAG255b9e919 [2022-12-14 05:45:44,991 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/data/7c4f9471f/0f2c9f97e23f42b7b3c4e33f01bfbe3a [2022-12-14 05:45:44,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:45:44,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:45:44,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:45:44,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:45:44,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:45:44,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:44" (1/1) ... [2022-12-14 05:45:45,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338d8b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45, skipping insertion in model container [2022-12-14 05:45:45,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:44" (1/1) ... [2022-12-14 05:45:45,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:45:45,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:45:45,223 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_fd5297ca-251a-4340-a50b-ce35f06db7cb/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2022-12-14 05:45:45,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:45:45,233 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:45:45,264 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_fd5297ca-251a-4340-a50b-ce35f06db7cb/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2022-12-14 05:45:45,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:45:45,283 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:45:45,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45 WrapperNode [2022-12-14 05:45:45,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:45:45,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:45:45,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:45:45,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:45:45,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,315 INFO L138 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-12-14 05:45:45,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:45:45,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:45:45,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:45:45,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:45:45,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:45:45,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:45:45,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:45:45,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:45:45,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (1/1) ... [2022-12-14 05:45:45,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:45:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:45,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:45:45,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:45:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-14 05:45:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:45:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:45:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:45:45,468 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:45:45,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:45:45,490 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-14 05:45:45,655 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:45:45,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:45:45,683 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 05:45:45,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:45:45 BoogieIcfgContainer [2022-12-14 05:45:45,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:45:45,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:45:45,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:45:45,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:45:45,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:45:44" (1/3) ... [2022-12-14 05:45:45,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877292e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:45:45, skipping insertion in model container [2022-12-14 05:45:45,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:45" (2/3) ... [2022-12-14 05:45:45,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877292e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:45:45, skipping insertion in model container [2022-12-14 05:45:45,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:45:45" (3/3) ... [2022-12-14 05:45:45,694 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2022-12-14 05:45:45,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:45:45,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-12-14 05:45:45,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:45:45,753 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;@53f35686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:45:45,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-14 05:45:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 25 states have (on average 2.24) internal successors, (56), 50 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:45:45,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:45,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:45:45,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash 4305987, now seen corresponding path program 1 times [2022-12-14 05:45:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687477192] [2022-12-14 05:45:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:45,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687477192] [2022-12-14 05:45:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687477192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:45,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:45,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:45:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938764825] [2022-12-14 05:45:45,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:45,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:45:45,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:45:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:45:46,014 INFO L87 Difference]: Start difference. First operand has 52 states, 25 states have (on average 2.24) internal successors, (56), 50 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:46,103 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2022-12-14 05:45:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:45:46,105 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 [2022-12-14 05:45:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:46,110 INFO L225 Difference]: With dead ends: 76 [2022-12-14 05:45:46,110 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 05:45:46,112 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 [2022-12-14 05:45:46,114 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:46,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 67 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:45:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 05:45:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 45. [2022-12-14 05:45:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-12-14 05:45:46,138 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 4 [2022-12-14 05:45:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:46,139 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-12-14 05:45:46,139 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) [2022-12-14 05:45:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-12-14 05:45:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:45:46,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:46,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:45:46,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:45:46,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash 4305988, now seen corresponding path program 1 times [2022-12-14 05:45:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:46,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701406329] [2022-12-14 05:45:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:46,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701406329] [2022-12-14 05:45:46,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701406329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:46,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:46,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:45:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734340883] [2022-12-14 05:45:46,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:45:46,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:45:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:45:46,214 INFO L87 Difference]: Start difference. First operand 45 states and 48 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) [2022-12-14 05:45:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:46,279 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-12-14 05:45:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:45:46,280 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 [2022-12-14 05:45:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:46,281 INFO L225 Difference]: With dead ends: 74 [2022-12-14 05:45:46,281 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 05:45:46,281 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 [2022-12-14 05:45:46,283 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:46,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 71 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:45:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 05:45:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2022-12-14 05:45:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-12-14 05:45:46,287 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 4 [2022-12-14 05:45:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:46,288 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-12-14 05:45:46,288 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) [2022-12-14 05:45:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-12-14 05:45:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:45:46,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:46,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:45:46,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:45:46,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash 4405999, now seen corresponding path program 1 times [2022-12-14 05:45:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:46,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512631119] [2022-12-14 05:45:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:46,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:46,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512631119] [2022-12-14 05:45:46,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512631119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:46,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:46,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:45:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435716242] [2022-12-14 05:45:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:45:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:45:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:45:46,324 INFO L87 Difference]: Start difference. First operand 42 states and 45 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) [2022-12-14 05:45:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:46,339 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-12-14 05:45:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:45:46,340 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 [2022-12-14 05:45:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:46,340 INFO L225 Difference]: With dead ends: 52 [2022-12-14 05:45:46,340 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 05:45:46,341 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 [2022-12-14 05:45:46,341 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:46,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:45:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 05:45:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2022-12-14 05:45:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-12-14 05:45:46,345 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 4 [2022-12-14 05:45:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:46,345 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-12-14 05:45:46,346 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) [2022-12-14 05:45:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-12-14 05:45:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:45:46,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:46,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:46,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:45:46,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:46,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:46,347 INFO L85 PathProgramCache]: Analyzing trace with hash -470385081, now seen corresponding path program 1 times [2022-12-14 05:45:46,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:46,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610666449] [2022-12-14 05:45:46,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:46,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610666449] [2022-12-14 05:45:46,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610666449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:46,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:46,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:45:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836149284] [2022-12-14 05:45:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:45:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:45:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:45:46,389 INFO L87 Difference]: Start difference. First operand 43 states and 46 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) [2022-12-14 05:45:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:46,412 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-12-14 05:45:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:45:46,412 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 [2022-12-14 05:45:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:46,413 INFO L225 Difference]: With dead ends: 49 [2022-12-14 05:45:46,413 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 05:45:46,413 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 [2022-12-14 05:45:46,414 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:45:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 05:45:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-12-14 05:45:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-12-14 05:45:46,419 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 8 [2022-12-14 05:45:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:46,420 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-12-14 05:45:46,420 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) [2022-12-14 05:45:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-12-14 05:45:46,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:45:46,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:46,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:45:46,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1241221432, now seen corresponding path program 1 times [2022-12-14 05:45:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:46,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518740982] [2022-12-14 05:45:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:46,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518740982] [2022-12-14 05:45:46,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518740982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:45:46,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236291177] [2022-12-14 05:45:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:46,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:46,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:45:46,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:45:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:46,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:45:46,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:45:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:45:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236291177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:45:46,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617890721] [2022-12-14 05:45:46,661 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 05:45:46,661 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:45:46,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:45:46,669 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:45:46,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:45:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,747 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 [2022-12-14 05:45:46,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,795 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 [2022-12-14 05:45:46,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,833 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 [2022-12-14 05:45:46,845 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 [2022-12-14 05:45:46,855 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 [2022-12-14 05:45:46,876 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 [2022-12-14 05:45:46,888 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 [2022-12-14 05:45:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,902 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 [2022-12-14 05:45:46,932 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 [2022-12-14 05:45:46,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:46,948 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 [2022-12-14 05:45:46,963 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 [2022-12-14 05:45:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,026 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 [2022-12-14 05:45:47,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,062 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 [2022-12-14 05:45:47,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,080 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 [2022-12-14 05:45:47,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,101 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 [2022-12-14 05:45:47,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,137 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 [2022-12-14 05:45:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 05:45:47,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,174 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 [2022-12-14 05:45:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,318 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:45:47,319 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 [2022-12-14 05:45:47,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,360 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:45:47,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-12-14 05:45:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,386 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:47,386 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 [2022-12-14 05:45:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,485 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 [2022-12-14 05:45:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,525 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 [2022-12-14 05:45:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,536 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 [2022-12-14 05:45:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,552 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 [2022-12-14 05:45:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,581 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 [2022-12-14 05:45:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,600 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 [2022-12-14 05:45:47,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,615 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 [2022-12-14 05:45:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,700 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:47,701 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 [2022-12-14 05:45:47,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,733 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:45:47,733 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 [2022-12-14 05:45:47,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:47,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:47,763 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 05:45:47,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 389 treesize of output 388 [2022-12-14 05:45:47,986 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-12-14 05:45:47,986 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 [2022-12-14 05:45:48,304 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-12-14 05:45:48,305 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 [2022-12-14 05:45:48,339 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-12-14 05:45:48,339 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 [2022-12-14 05:45:48,369 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-12-14 05:45:48,370 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 [2022-12-14 05:45:48,416 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:45:50,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [617890721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:50,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:45:50,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2022-12-14 05:45:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656397939] [2022-12-14 05:45:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:45:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:45:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:45:50,591 INFO L87 Difference]: Start difference. First operand 48 states and 51 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) [2022-12-14 05:45:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:51,396 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-12-14 05:45:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:45:51,397 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 [2022-12-14 05:45:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:51,398 INFO L225 Difference]: With dead ends: 59 [2022-12-14 05:45:51,398 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 05:45:51,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:45:51,399 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:51,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:45:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 05:45:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2022-12-14 05:45:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-12-14 05:45:51,402 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2022-12-14 05:45:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:51,402 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-12-14 05:45:51,402 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) [2022-12-14 05:45:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-12-14 05:45:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 05:45:51,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:51,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 05:45:51,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:45:51,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:51,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:51,606 INFO L85 PathProgramCache]: Analyzing trace with hash -522420208, now seen corresponding path program 1 times [2022-12-14 05:45:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:51,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539557252] [2022-12-14 05:45:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:51,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539557252] [2022-12-14 05:45:51,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539557252] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:45:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472874467] [2022-12-14 05:45:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:51,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:45:51,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:45:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:51,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:45:51,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:45:51,827 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 [2022-12-14 05:45:51,850 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:45:51,851 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 [2022-12-14 05:45:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:51,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:45:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:51,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472874467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:45:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1855601330] [2022-12-14 05:45:51,932 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:45:51,932 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:45:51,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:45:51,933 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:45:51,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:45:51,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,947 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 [2022-12-14 05:45:51,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 05:45:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:51,991 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 [2022-12-14 05:45:52,000 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 [2022-12-14 05:45:52,009 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 [2022-12-14 05:45:52,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,034 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 [2022-12-14 05:45:52,043 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 [2022-12-14 05:45:52,051 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 [2022-12-14 05:45:52,071 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 [2022-12-14 05:45:52,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,083 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 [2022-12-14 05:45:52,096 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 [2022-12-14 05:45:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,143 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 [2022-12-14 05:45:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,183 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 [2022-12-14 05:45:52,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,198 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 [2022-12-14 05:45:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,214 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 [2022-12-14 05:45:52,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,237 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 [2022-12-14 05:45:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,257 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 [2022-12-14 05:45:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,276 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 [2022-12-14 05:45:52,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,373 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:52,373 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 [2022-12-14 05:45:52,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,393 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:52,393 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 [2022-12-14 05:45:52,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,417 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:52,418 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 [2022-12-14 05:45:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,496 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 [2022-12-14 05:45:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,532 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 [2022-12-14 05:45:52,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,545 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 [2022-12-14 05:45:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,560 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 [2022-12-14 05:45:52,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,597 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 [2022-12-14 05:45:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 05:45:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,626 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 [2022-12-14 05:45:52,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,690 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:52,691 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 [2022-12-14 05:45:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,716 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:52,717 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 [2022-12-14 05:45:52,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:52,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:52,743 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:52,743 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 [2022-12-14 05:45:53,006 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-12-14 05:45:53,006 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 [2022-12-14 05:45:53,231 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-14 05:45:53,232 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 [2022-12-14 05:45:53,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:45:53,246 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 [2022-12-14 05:45:53,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:45:53,261 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 [2022-12-14 05:45:53,309 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:45:55,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1855601330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:55,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:45:55,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 13 [2022-12-14 05:45:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446159150] [2022-12-14 05:45:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:55,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:45:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:55,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:45:55,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-12-14 05:45:55,433 INFO L87 Difference]: Start difference. First operand 55 states and 59 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) [2022-12-14 05:45:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:56,091 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-12-14 05:45:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:45:56,091 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 [2022-12-14 05:45:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:56,092 INFO L225 Difference]: With dead ends: 57 [2022-12-14 05:45:56,092 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 05:45:56,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:45:56,092 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:56,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:45:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 05:45:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-12-14 05:45:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-12-14 05:45:56,095 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 15 [2022-12-14 05:45:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:56,095 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-12-14 05:45:56,095 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) [2022-12-14 05:45:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-12-14 05:45:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:45:56,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:56,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:56,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 05:45:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:45:56,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash 528792996, now seen corresponding path program 1 times [2022-12-14 05:45:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:56,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197959012] [2022-12-14 05:45:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:45:56,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:56,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197959012] [2022-12-14 05:45:56,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197959012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:56,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:56,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:45:56,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191507225] [2022-12-14 05:45:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:56,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:45:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:56,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:45:56,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:45:56,369 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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) [2022-12-14 05:45:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:56,390 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2022-12-14 05:45:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:45:56,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 [2022-12-14 05:45:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:56,392 INFO L225 Difference]: With dead ends: 79 [2022-12-14 05:45:56,392 INFO L226 Difference]: Without dead ends: 79 [2022-12-14 05:45:56,392 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 [2022-12-14 05:45:56,393 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 82 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:45:56,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-14 05:45:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2022-12-14 05:45:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.605263157894737) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:45:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-12-14 05:45:56,398 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 19 [2022-12-14 05:45:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:56,398 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-12-14 05:45:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) 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) [2022-12-14 05:45:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-12-14 05:45:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:45:56,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:56,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:56,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:45:56,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:45:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash 528791132, now seen corresponding path program 1 times [2022-12-14 05:45:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139032854] [2022-12-14 05:45:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:56,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:45:56,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139032854] [2022-12-14 05:45:56,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139032854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:45:56,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929026972] [2022-12-14 05:45:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:56,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:56,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:56,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:45:56,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:45:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 05:45:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:45:56,652 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 [2022-12-14 05:45:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,663 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 [2022-12-14 05:45:56,677 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:45:56,677 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 [2022-12-14 05:45:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:45:56,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:45:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:45:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929026972] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:45:56,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064859213] [2022-12-14 05:45:56,729 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 05:45:56,729 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:45:56,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:45:56,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:45:56,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:45:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,741 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 [2022-12-14 05:45:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,759 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 [2022-12-14 05:45:56,777 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 [2022-12-14 05:45:56,785 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 [2022-12-14 05:45:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,797 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 [2022-12-14 05:45:56,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:45:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,830 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 [2022-12-14 05:45:56,840 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 [2022-12-14 05:45:56,860 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 [2022-12-14 05:45:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,873 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 [2022-12-14 05:45:56,884 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 [2022-12-14 05:45:56,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,939 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 [2022-12-14 05:45:56,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 05:45:56,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:56,998 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 [2022-12-14 05:45:57,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,008 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 [2022-12-14 05:45:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,038 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 [2022-12-14 05:45:57,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,050 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 [2022-12-14 05:45:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,069 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 [2022-12-14 05:45:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,136 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:57,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 387 treesize of output 368 [2022-12-14 05:45:57,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,160 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:57,160 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 [2022-12-14 05:45:57,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,180 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:57,181 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 [2022-12-14 05:45:57,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,292 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:45:57,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-12-14 05:45:57,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,327 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:45:57,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-12-14 05:45:57,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:57,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:57,353 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 05:45:57,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 379 treesize of output 360 [2022-12-14 05:45:57,651 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-12-14 05:45:57,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 596 treesize of output 590 [2022-12-14 05:45:57,813 INFO L321 Elim1Store]: treesize reduction 200, result has 14.5 percent of original size [2022-12-14 05:45:57,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 539 [2022-12-14 05:45:57,856 INFO L321 Elim1Store]: treesize reduction 200, result has 13.8 percent of original size [2022-12-14 05:45:57,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 647 treesize of output 617 [2022-12-14 05:45:57,902 INFO L321 Elim1Store]: treesize reduction 130, result has 17.7 percent of original size [2022-12-14 05:45:57,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 643 treesize of output 639 [2022-12-14 05:45:57,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,043 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-12-14 05:45:58,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 548 [2022-12-14 05:45:58,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,106 INFO L321 Elim1Store]: treesize reduction 222, result has 16.9 percent of original size [2022-12-14 05:45:58,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 626 [2022-12-14 05:45:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,147 INFO L321 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2022-12-14 05:45:58,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 658 treesize of output 642 [2022-12-14 05:45:58,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,246 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:58,246 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 [2022-12-14 05:45:58,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,270 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:45:58,270 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 [2022-12-14 05:45:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,288 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:58,288 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 [2022-12-14 05:45:58,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,392 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:45:58,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 385 [2022-12-14 05:45:58,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,416 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:45:58,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 386 treesize of output 381 [2022-12-14 05:45:58,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:45:58,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:45:58,436 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:45:58,437 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 379 treesize of output 360 [2022-12-14 05:45:58,681 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 [2022-12-14 05:45:58,686 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 [2022-12-14 05:45:58,696 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 [2022-12-14 05:45:58,701 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 [2022-12-14 05:45:58,705 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 [2022-12-14 05:45:58,715 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:01,761 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1155#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_remove_first_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_remove_first_~head#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_remove_first_~head#1.base| |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_remove_first_~head#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:46:01,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:46:01,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:01,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2022-12-14 05:46:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574271921] [2022-12-14 05:46:01,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:46:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:01,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:46:01,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 05:46:01,762 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:01,855 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-12-14 05:46:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:46:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-12-14 05:46:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:01,856 INFO L225 Difference]: With dead ends: 73 [2022-12-14 05:46:01,856 INFO L226 Difference]: Without dead ends: 73 [2022-12-14 05:46:01,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:46:01,857 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:01,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 84 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-14 05:46:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2022-12-14 05:46:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-12-14 05:46:01,861 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 19 [2022-12-14 05:46:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:01,861 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-12-14 05:46:01,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-12-14 05:46:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:46:01,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:01,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:01,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:46:02,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:02,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash 528791133, now seen corresponding path program 1 times [2022-12-14 05:46:02,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:02,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264830038] [2022-12-14 05:46:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:02,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264830038] [2022-12-14 05:46:02,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264830038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140452948] [2022-12-14 05:46:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:02,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:02,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:02,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:02,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:46:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:02,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 05:46:02,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:02,433 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 [2022-12-14 05:46:02,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:02,445 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 [2022-12-14 05:46:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:02,486 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 [2022-12-14 05:46:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:02,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:06,694 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| Int)) (or (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| |c_#StackHeapBarrier|)) (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| Int) (v_ArrVal_407 Int)) (or (not (< |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_408 Int)) (<= (+ |c_ULTIMATE.start_main_~#s~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_32| v_ArrVal_407) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_31| v_ArrVal_408) |c_ULTIMATE.start_main_~#s~0#1.base|))))))) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.offset|)) is different from false [2022-12-14 05:46:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:46:06,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140452948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1594418739] [2022-12-14 05:46:06,698 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 05:46:06,698 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:06,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:06,698 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:06,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:06,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,714 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 [2022-12-14 05:46:06,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,739 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 [2022-12-14 05:46:06,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,757 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 [2022-12-14 05:46:06,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:06,773 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 15 treesize of output 1 [2022-12-14 05:46:06,787 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 [2022-12-14 05:46:06,793 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 [2022-12-14 05:46:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,803 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 [2022-12-14 05:46:06,820 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 [2022-12-14 05:46:06,827 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 [2022-12-14 05:46:06,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,837 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 [2022-12-14 05:46:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,892 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 [2022-12-14 05:46:06,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,922 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 [2022-12-14 05:46:06,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,933 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 [2022-12-14 05:46:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,944 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 [2022-12-14 05:46:06,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,970 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 [2022-12-14 05:46:06,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,982 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 28 treesize of output 30 [2022-12-14 05:46:06,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:06,999 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 [2022-12-14 05:46:07,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,102 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:46:07,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-12-14 05:46:07,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,121 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:46:07,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-12-14 05:46:07,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,142 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:46:07,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-12-14 05:46:07,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,247 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:46:07,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-12-14 05:46:07,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,277 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:46:07,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 389 treesize of output 384 [2022-12-14 05:46:07,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,297 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 05:46:07,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 363 [2022-12-14 05:46:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,524 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 05:46:07,524 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 [2022-12-14 05:46:07,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,562 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 0 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 05:46:07,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,573 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 [2022-12-14 05:46:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,592 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 [2022-12-14 05:46:07,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 05:46:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,629 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 [2022-12-14 05:46:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,642 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 [2022-12-14 05:46:07,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,703 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 05:46:07,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 371 [2022-12-14 05:46:07,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,723 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:46:07,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-12-14 05:46:07,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,746 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 05:46:07,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 384 treesize of output 383 [2022-12-14 05:46:07,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,860 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 05:46:07,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 393 treesize of output 388 [2022-12-14 05:46:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 384 [2022-12-14 05:46:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:07,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:07,896 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 05:46:07,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 363 [2022-12-14 05:46:08,149 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 [2022-12-14 05:46:08,155 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 [2022-12-14 05:46:08,170 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 [2022-12-14 05:46:08,175 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 [2022-12-14 05:46:08,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:08,193 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:10,612 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1419#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (not (<= (+ |ULTIMATE.start_dll_remove_first_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_first_~head#1.base|))) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_remove_first_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_remove_first_~head#1.base| |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_remove_first_~head#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:46:10,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:46:10,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:10,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 10 [2022-12-14 05:46:10,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061389293] [2022-12-14 05:46:10,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:10,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 05:46:10,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 05:46:10,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=313, Unknown=1, NotChecked=38, Total=462 [2022-12-14 05:46:10,614 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:10,735 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2022-12-14 05:46:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 05:46:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:10,736 INFO L225 Difference]: With dead ends: 67 [2022-12-14 05:46:10,736 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 05:46:10,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=146, Invalid=409, Unknown=1, NotChecked=44, Total=600 [2022-12-14 05:46:10,736 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 163 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:10,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 18 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-12-14 05:46:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 05:46:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2022-12-14 05:46:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-12-14 05:46:10,739 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 19 [2022-12-14 05:46:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:10,739 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-12-14 05:46:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-12-14 05:46:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 05:46:10,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:10,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:10,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:46:10,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:10,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash -787344062, now seen corresponding path program 1 times [2022-12-14 05:46:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:10,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909952274] [2022-12-14 05:46:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:46:11,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:11,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909952274] [2022-12-14 05:46:11,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909952274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:11,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:11,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212575610] [2022-12-14 05:46:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:11,075 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:11,178 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-12-14 05:46:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 05:46:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:11,179 INFO L225 Difference]: With dead ends: 73 [2022-12-14 05:46:11,179 INFO L226 Difference]: Without dead ends: 73 [2022-12-14 05:46:11,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:46:11,180 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:11,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 72 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-14 05:46:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2022-12-14 05:46:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.45) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-12-14 05:46:11,184 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 20 [2022-12-14 05:46:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:11,184 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-12-14 05:46:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-12-14 05:46:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 05:46:11,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:11,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:11,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:46:11,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash -787344061, now seen corresponding path program 1 times [2022-12-14 05:46:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:11,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009961851] [2022-12-14 05:46:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:11,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009961851] [2022-12-14 05:46:11,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009961851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:11,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:11,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406983102] [2022-12-14 05:46:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:11,333 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:11,459 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-12-14 05:46:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:11,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 05:46:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:11,460 INFO L225 Difference]: With dead ends: 66 [2022-12-14 05:46:11,460 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 05:46:11,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:46:11,461 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 128 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:11,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 66 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 05:46:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2022-12-14 05:46:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 50 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) [2022-12-14 05:46:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-12-14 05:46:11,464 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 20 [2022-12-14 05:46:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:11,464 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-12-14 05:46:11,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-12-14 05:46:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:46:11,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:11,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:11,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 05:46:11,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash -723348361, now seen corresponding path program 1 times [2022-12-14 05:46:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:11,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477909754] [2022-12-14 05:46:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:11,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:11,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477909754] [2022-12-14 05:46:11,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477909754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:11,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434838955] [2022-12-14 05:46:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:11,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:11,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:11,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:46:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:11,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 05:46:11,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:11,941 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 [2022-12-14 05:46:11,981 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:46:11,981 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 [2022-12-14 05:46:11,998 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 [2022-12-14 05:46:12,019 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 [2022-12-14 05:46:12,033 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:46:12,033 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 [2022-12-14 05:46:12,122 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 49 treesize of output 37 [2022-12-14 05:46:12,155 INFO L321 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-12-14 05:46:12,155 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 05:46:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:12,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:12,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-12-14 05:46:12,283 INFO L321 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2022-12-14 05:46:12,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2022-12-14 05:46:12,288 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_606 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_606))) (let ((.cse1 (select (select .cse0 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= (select (select .cse0 .cse1) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse1)))))) is different from false [2022-12-14 05:46:12,422 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:12,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 51 [2022-12-14 05:46:12,448 INFO L321 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2022-12-14 05:46:12,448 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 123 treesize of output 124 [2022-12-14 05:46:12,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:12,455 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 108 treesize of output 104 [2022-12-14 05:46:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 05:46:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434838955] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:12,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134537516] [2022-12-14 05:46:12,556 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:46:12,556 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:12,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:12,556 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:12,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,573 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 [2022-12-14 05:46:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,590 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 [2022-12-14 05:46:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,611 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 [2022-12-14 05:46:12,620 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 [2022-12-14 05:46:12,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:12,641 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 [2022-12-14 05:46:12,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,651 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 [2022-12-14 05:46:12,660 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 [2022-12-14 05:46:12,676 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 [2022-12-14 05:46:12,684 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 [2022-12-14 05:46:12,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,698 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 [2022-12-14 05:46:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,749 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 [2022-12-14 05:46:12,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,786 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 [2022-12-14 05:46:12,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 05:46:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,807 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 [2022-12-14 05:46:12,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,833 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 [2022-12-14 05:46:12,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,843 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 [2022-12-14 05:46:12,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,856 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 [2022-12-14 05:46:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,882 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 [2022-12-14 05:46:12,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,902 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 [2022-12-14 05:46:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,916 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 [2022-12-14 05:46:12,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:12,952 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 [2022-12-14 05:46:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:12,966 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 [2022-12-14 05:46:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:12,984 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 [2022-12-14 05:46:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,188 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 05:46:13,188 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 [2022-12-14 05:46:13,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,234 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 [2022-12-14 05:46:13,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,246 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 [2022-12-14 05:46:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,254 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 [2022-12-14 05:46:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,281 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 [2022-12-14 05:46:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,290 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 [2022-12-14 05:46:13,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,306 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 [2022-12-14 05:46:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,335 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 [2022-12-14 05:46:13,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,348 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 [2022-12-14 05:46:13,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,362 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 [2022-12-14 05:46:13,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,399 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 [2022-12-14 05:46:13,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,415 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 [2022-12-14 05:46:13,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,430 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 [2022-12-14 05:46:13,467 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 [2022-12-14 05:46:13,472 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 [2022-12-14 05:46:13,480 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 [2022-12-14 05:46:13,484 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 [2022-12-14 05:46:13,489 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 [2022-12-14 05:46:13,496 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 13 treesize of output 9 [2022-12-14 05:46:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:46:13,507 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 [2022-12-14 05:46:13,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,523 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 [2022-12-14 05:46:13,528 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 [2022-12-14 05:46:13,536 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 [2022-12-14 05:46:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,556 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 [2022-12-14 05:46:13,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:13,569 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:46:13,569 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 [2022-12-14 05:46:13,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:13,587 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:46:13,587 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 [2022-12-14 05:46:13,639 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 [2022-12-14 05:46:13,644 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 [2022-12-14 05:46:13,655 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 15 treesize of output 1 [2022-12-14 05:46:13,660 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 [2022-12-14 05:46:13,667 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 [2022-12-14 05:46:13,675 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 [2022-12-14 05:46:13,681 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 [2022-12-14 05:46:13,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,688 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 [2022-12-14 05:46:13,700 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 [2022-12-14 05:46:13,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,708 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 [2022-12-14 05:46:13,717 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 [2022-12-14 05:46:13,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:13,742 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:46:13,743 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 [2022-12-14 05:46:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,752 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 [2022-12-14 05:46:13,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:13,767 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:46:13,767 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 [2022-12-14 05:46:13,864 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 [2022-12-14 05:46:13,869 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 [2022-12-14 05:46:13,881 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 [2022-12-14 05:46:13,885 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 [2022-12-14 05:46:13,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:13,933 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 [2022-12-14 05:46:13,939 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 [2022-12-14 05:46:13,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:13,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:13,951 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:13,951 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 [2022-12-14 05:46:14,030 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 [2022-12-14 05:46:14,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:14,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:14,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:14,044 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:14,044 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 [2022-12-14 05:46:14,064 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 [2022-12-14 05:46:14,095 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:16,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1989#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= (+ |ULTIMATE.start_dll_remove_first_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_first_~head#1.base|)) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (not (= (select |#valid| |ULTIMATE.start_dll_remove_first_~temp~1#1.base|) 1)) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|))) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 4)) |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_remove_first_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_dll_remove_first_~temp~1#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 4))) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (or (not (= 0 |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|)) (not (= |ULTIMATE.start_dll_remove_first_~temp~1#1.base| 0))) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_remove_first_~head#1.base| |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_remove_first_~head#1.base|) 1) (= |ULTIMATE.start_dll_remove_first_~head#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:46:16,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:46:16,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:16,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2022-12-14 05:46:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256540001] [2022-12-14 05:46:16,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:16,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 05:46:16,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 05:46:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1696, Unknown=6, NotChecked=84, Total=1980 [2022-12-14 05:46:16,819 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 32 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:17,684 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-12-14 05:46:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 05:46:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 32 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2022-12-14 05:46:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:17,686 INFO L225 Difference]: With dead ends: 85 [2022-12-14 05:46:17,686 INFO L226 Difference]: Without dead ends: 85 [2022-12-14 05:46:17,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=411, Invalid=2667, Unknown=6, NotChecked=108, Total=3192 [2022-12-14 05:46:17,688 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 301 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:17,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 206 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 575 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2022-12-14 05:46:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-14 05:46:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 53. [2022-12-14 05:46:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-12-14 05:46:17,692 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 22 [2022-12-14 05:46:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:17,692 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-12-14 05:46:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 32 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-12-14 05:46:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:46:17,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:17,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:17,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:46:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 05:46:17,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -723348360, now seen corresponding path program 1 times [2022-12-14 05:46:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:17,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986687747] [2022-12-14 05:46:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:18,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986687747] [2022-12-14 05:46:18,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986687747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612925050] [2022-12-14 05:46:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:18,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:18,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:18,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:18,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:46:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:18,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-14 05:46:18,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:18,492 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 [2022-12-14 05:46:18,534 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:46:18,534 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 [2022-12-14 05:46:18,560 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 [2022-12-14 05:46:18,564 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 [2022-12-14 05:46:18,588 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 [2022-12-14 05:46:18,593 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 [2022-12-14 05:46:18,613 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:46:18,613 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 54 treesize of output 53 [2022-12-14 05:46:18,617 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 41 treesize of output 41 [2022-12-14 05:46:18,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:18,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:18,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:18,772 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 85 treesize of output 45 [2022-12-14 05:46:18,779 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-14 05:46:18,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2022-12-14 05:46:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:18,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:19,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:19,081 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 137 treesize of output 141 [2022-12-14 05:46:19,144 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_3 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (select (select .cse2 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse0)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (<= 0 (+ (select (select .cse2 .cse0) (+ .cse1 4)) 8)))))) (forall ((v_ArrVal_712 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_712))) (let ((.cse5 (select (select .cse3 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_713 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_713) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (< (select (select .cse3 .cse4) (+ .cse5 4)) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 1)) (not (= .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (not (= .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_712 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_712) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_713 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_713))) (let ((.cse7 (select (select .cse6 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (= (select (select .cse6 .cse7) (+ .cse8 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|) (not (= .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))))) (not (= .cse8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) is different from false [2022-12-14 05:46:19,266 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse5 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse4 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (and (forall ((v_ArrVal_712 (Array Int Int)) (v_ArrVal_709 Int) (v_ArrVal_708 Int) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse5 .cse4 v_ArrVal_709)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_712) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_713 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse3 .cse4 v_ArrVal_708)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_713))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (select (select .cse1 .cse0) (+ 4 .cse2)) |c_ULTIMATE.start_dll_create_~head~0#1.base|))))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse2))))) (forall ((v_ArrVal_709 Int) (v_prenex_3 Int) (v_ArrVal_708 Int) (v_prenex_1 (Array Int Int)) (v_prenex_2 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse5 .cse4 v_ArrVal_709)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_2))) (let ((.cse7 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse3 .cse4 v_ArrVal_708)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (select (select .cse6 v_prenex_3) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (<= 0 (+ 8 (select (select .cse6 .cse7) (+ 4 .cse8)))) (not (= .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse8)))))) (forall ((v_ArrVal_712 (Array Int Int)) (v_ArrVal_709 Int) (v_ArrVal_708 Int) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse5 .cse4 v_ArrVal_709)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_712))) (let ((.cse11 (select (select .cse10 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_ArrVal_713 (Array Int Int))) (let ((.cse9 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse3 .cse4 v_ArrVal_708)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_713) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (< (select (select .cse10 .cse9) (+ 4 .cse11)) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 1))))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| .cse11)))))))) is different from false [2022-12-14 05:46:19,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:19,296 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 100 treesize of output 90 [2022-12-14 05:46:19,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:19,304 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 85 treesize of output 60 [2022-12-14 05:46:19,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:19,315 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 92 treesize of output 91 [2022-12-14 05:46:19,429 INFO L321 Elim1Store]: treesize reduction 75, result has 63.2 percent of original size [2022-12-14 05:46:19,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 296 [2022-12-14 05:46:19,444 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 160 treesize of output 140 [2022-12-14 05:46:19,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:19,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 221 [2022-12-14 05:46:21,289 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 05:46:21,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 1 [2022-12-14 05:46:21,295 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 05:46:21,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 1 [2022-12-14 05:46:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:46:21,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612925050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:21,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069385920] [2022-12-14 05:46:21,422 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:46:21,422 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:21,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:21,422 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:21,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:21,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,433 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 [2022-12-14 05:46:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,452 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 [2022-12-14 05:46:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,468 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 [2022-12-14 05:46:21,476 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 [2022-12-14 05:46:21,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:21,496 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 13 treesize of output 9 [2022-12-14 05:46:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,505 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 [2022-12-14 05:46:21,519 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 [2022-12-14 05:46:21,533 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 [2022-12-14 05:46:21,539 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 [2022-12-14 05:46:21,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,548 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 [2022-12-14 05:46:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,594 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 [2022-12-14 05:46:21,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,622 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 [2022-12-14 05:46:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,633 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 34 treesize of output 25 [2022-12-14 05:46:21,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,645 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 [2022-12-14 05:46:21,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,670 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 [2022-12-14 05:46:21,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,680 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 [2022-12-14 05:46:21,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,697 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 [2022-12-14 05:46:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,721 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 [2022-12-14 05:46:21,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,735 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 [2022-12-14 05:46:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,749 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 [2022-12-14 05:46:21,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,788 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 [2022-12-14 05:46:21,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,801 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 [2022-12-14 05:46:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,818 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 [2022-12-14 05:46:21,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:21,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,001 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 [2022-12-14 05:46:22,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,033 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 [2022-12-14 05:46:22,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,044 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 [2022-12-14 05:46:22,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 05:46:22,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,077 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 [2022-12-14 05:46:22,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,091 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 [2022-12-14 05:46:22,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,106 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 [2022-12-14 05:46:22,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,127 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 [2022-12-14 05:46:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,138 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 [2022-12-14 05:46:22,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,160 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 [2022-12-14 05:46:22,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,203 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 [2022-12-14 05:46:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,216 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 [2022-12-14 05:46:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,231 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 [2022-12-14 05:46:22,448 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 [2022-12-14 05:46:22,452 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 [2022-12-14 05:46:22,464 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 [2022-12-14 05:46:22,468 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 [2022-12-14 05:46:22,474 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 [2022-12-14 05:46:22,510 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 [2022-12-14 05:46:22,514 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 [2022-12-14 05:46:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:22,534 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:22,534 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 [2022-12-14 05:46:22,575 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 [2022-12-14 05:46:22,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:22,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:22,589 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:22,589 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 [2022-12-14 05:46:22,610 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 [2022-12-14 05:46:22,640 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:26,276 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2329#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= (+ |ULTIMATE.start_dll_remove_first_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_remove_first_~head#1.base|)) (= |ULTIMATE.start_dll_create_~head~0#1.offset| |ULTIMATE.start_dll_create_#res#1.offset|) (or (not (<= (+ 12 |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|) (select |#length| |ULTIMATE.start_dll_remove_first_~temp~1#1.base|))) (not (<= 0 (+ 8 |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|)))) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|))) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= |ULTIMATE.start_dll_create_~head~0#1.base| |ULTIMATE.start_dll_create_#res#1.base|) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 4)) |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_dll_create_#res#1.offset|) (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_dll_remove_first_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_dll_remove_first_~temp~1#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|) 4))) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (or (not (= 0 |ULTIMATE.start_dll_remove_first_~temp~1#1.offset|)) (not (= |ULTIMATE.start_dll_remove_first_~temp~1#1.base| 0))) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_remove_first_~head#1.base| |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_remove_first_~head#1.base|) 1) (= |ULTIMATE.start_dll_remove_first_~head#1.offset| |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_remove_first_~head#1.base|) |ULTIMATE.start_dll_remove_first_~head#1.offset|)) 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~len~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:46:26,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:46:26,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:26,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 34 [2022-12-14 05:46:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404310669] [2022-12-14 05:46:26,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:26,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 05:46:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 05:46:26,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1868, Unknown=2, NotChecked=178, Total=2256 [2022-12-14 05:46:26,279 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:45,563 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 82 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:46:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:48,368 INFO L93 Difference]: Finished difference Result 456 states and 491 transitions. [2022-12-14 05:46:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-14 05:46:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 05:46:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:48,370 INFO L225 Difference]: With dead ends: 456 [2022-12-14 05:46:48,370 INFO L226 Difference]: Without dead ends: 456 [2022-12-14 05:46:48,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=1255, Invalid=8651, Unknown=2, NotChecked=394, Total=10302 [2022-12-14 05:46:48,372 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 907 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 53 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:48,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 923 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1478 Invalid, 14 Unknown, 311 Unchecked, 1.4s Time] [2022-12-14 05:46:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-12-14 05:46:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 70. [2022-12-14 05:46:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.396551724137931) internal successors, (81), 69 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) [2022-12-14 05:46:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2022-12-14 05:46:48,375 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 22 [2022-12-14 05:46:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:48,375 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2022-12-14 05:46:48,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2022-12-14 05:46:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:46:48,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:48,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:48,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 05:46:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 05:46:48,577 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -948957675, now seen corresponding path program 1 times [2022-12-14 05:46:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:48,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587546183] [2022-12-14 05:46:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:48,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:48,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587546183] [2022-12-14 05:46:48,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587546183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:48,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:48,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:48,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971930475] [2022-12-14 05:46:48,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:48,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:48,678 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:48,814 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-12-14 05:46:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:46:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 05:46:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:48,816 INFO L225 Difference]: With dead ends: 79 [2022-12-14 05:46:48,816 INFO L226 Difference]: Without dead ends: 79 [2022-12-14 05:46:48,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:46:48,817 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 125 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:48,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 73 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-14 05:46:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2022-12-14 05:46:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2022-12-14 05:46:48,820 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 23 [2022-12-14 05:46:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:48,820 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2022-12-14 05:46:48,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2022-12-14 05:46:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 05:46:48,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:48,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:48,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 05:46:48,821 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash 647083256, now seen corresponding path program 1 times [2022-12-14 05:46:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:48,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774526356] [2022-12-14 05:46:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:48,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:48,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774526356] [2022-12-14 05:46:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774526356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:48,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146696711] [2022-12-14 05:46:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:46:48,927 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:49,090 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2022-12-14 05:46:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:46:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 05:46:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:49,091 INFO L225 Difference]: With dead ends: 80 [2022-12-14 05:46:49,092 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 05:46:49,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:46:49,092 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 117 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:49,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 56 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 05:46:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-12-14 05:46:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 74 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) [2022-12-14 05:46:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-12-14 05:46:49,095 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 24 [2022-12-14 05:46:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:49,095 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-12-14 05:46:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-12-14 05:46:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 05:46:49,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:49,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:49,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 05:46:49,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:49,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1420055692, now seen corresponding path program 1 times [2022-12-14 05:46:49,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:49,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155079534] [2022-12-14 05:46:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:49,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:49,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155079534] [2022-12-14 05:46:49,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155079534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:49,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:49,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:46:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200475589] [2022-12-14 05:46:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:49,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:46:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:46:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:46:49,496 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:49,733 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2022-12-14 05:46:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:46:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 05:46:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:49,735 INFO L225 Difference]: With dead ends: 81 [2022-12-14 05:46:49,735 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 05:46:49,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:46:49,735 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:49,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 65 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 05:46:49,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2022-12-14 05:46:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2022-12-14 05:46:49,738 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 25 [2022-12-14 05:46:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:49,738 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2022-12-14 05:46:49,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2022-12-14 05:46:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 05:46:49,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:49,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:49,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 05:46:49,739 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:49,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1415255433, now seen corresponding path program 1 times [2022-12-14 05:46:49,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:49,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596407897] [2022-12-14 05:46:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:49,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:49,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596407897] [2022-12-14 05:46:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596407897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:49,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:49,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:46:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275479160] [2022-12-14 05:46:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:49,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:46:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:46:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:46:49,800 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:49,894 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2022-12-14 05:46:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:46:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 05:46:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:49,895 INFO L225 Difference]: With dead ends: 82 [2022-12-14 05:46:49,895 INFO L226 Difference]: Without dead ends: 82 [2022-12-14 05:46:49,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:46:49,896 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:49,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-14 05:46:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-12-14 05:46:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 79 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2022-12-14 05:46:49,899 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 25 [2022-12-14 05:46:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:49,900 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2022-12-14 05:46:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2022-12-14 05:46:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 05:46:49,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:49,900 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] [2022-12-14 05:46:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 05:46:49,900 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1072053381, now seen corresponding path program 1 times [2022-12-14 05:46:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:49,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464608987] [2022-12-14 05:46:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:46:50,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:50,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464608987] [2022-12-14 05:46:50,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464608987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:50,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:50,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:46:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059507625] [2022-12-14 05:46:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:50,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:46:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:46:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:46:50,124 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 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) [2022-12-14 05:46:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:50,407 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-12-14 05:46:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:46:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 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 26 [2022-12-14 05:46:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:50,408 INFO L225 Difference]: With dead ends: 84 [2022-12-14 05:46:50,408 INFO L226 Difference]: Without dead ends: 84 [2022-12-14 05:46:50,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:46:50,409 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:50,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 90 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:46:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-14 05:46:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2022-12-14 05:46:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 76 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) [2022-12-14 05:46:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2022-12-14 05:46:50,412 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 26 [2022-12-14 05:46:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:50,412 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2022-12-14 05:46:50,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 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) [2022-12-14 05:46:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2022-12-14 05:46:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 05:46:50,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:50,412 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] [2022-12-14 05:46:50,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 05:46:50,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash -923245349, now seen corresponding path program 1 times [2022-12-14 05:46:50,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717135536] [2022-12-14 05:46:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:46:50,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717135536] [2022-12-14 05:46:50,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717135536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21753453] [2022-12-14 05:46:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:50,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:50,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:50,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:50,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:46:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:50,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:46:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:50,759 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 [2022-12-14 05:46:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:50,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:46:50,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21753453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:50,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:46:50,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-12-14 05:46:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960442917] [2022-12-14 05:46:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:50,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:46:50,763 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:50,872 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2022-12-14 05:46:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:46:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-14 05:46:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:50,873 INFO L225 Difference]: With dead ends: 76 [2022-12-14 05:46:50,873 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 05:46:50,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-14 05:46:50,874 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 75 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:50,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 42 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:46:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 05:46:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-12-14 05:46:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 75 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) [2022-12-14 05:46:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2022-12-14 05:46:50,877 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 26 [2022-12-14 05:46:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:50,877 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2022-12-14 05:46:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2022-12-14 05:46:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:46:50,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:50,877 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] [2022-12-14 05:46:50,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:46:51,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:51,078 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1819479488, now seen corresponding path program 1 times [2022-12-14 05:46:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:51,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468570611] [2022-12-14 05:46:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:51,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:51,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468570611] [2022-12-14 05:46:51,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468570611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:51,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095562165] [2022-12-14 05:46:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:51,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:51,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:51,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:46:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:51,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:46:51,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:51,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:51,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095562165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:51,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115177757] [2022-12-14 05:46:51,354 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 05:46:51,355 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:51,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:51,355 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:51,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:51,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,375 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 [2022-12-14 05:46:51,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,402 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 [2022-12-14 05:46:51,421 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 [2022-12-14 05:46:51,429 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 [2022-12-14 05:46:51,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,439 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 [2022-12-14 05:46:51,464 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 [2022-12-14 05:46:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,474 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 [2022-12-14 05:46:51,484 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 [2022-12-14 05:46:51,502 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 [2022-12-14 05:46:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,514 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 [2022-12-14 05:46:51,528 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 [2022-12-14 05:46:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,578 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 [2022-12-14 05:46:51,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,614 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 [2022-12-14 05:46:51,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,626 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 [2022-12-14 05:46:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,644 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 [2022-12-14 05:46:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,675 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 [2022-12-14 05:46:51,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,695 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 [2022-12-14 05:46:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 05:46:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,746 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 [2022-12-14 05:46:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,773 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 [2022-12-14 05:46:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,792 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 [2022-12-14 05:46:51,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,833 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 [2022-12-14 05:46:51,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,848 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 [2022-12-14 05:46:51,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:51,873 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 [2022-12-14 05:46:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,084 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 05:46:52,084 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 [2022-12-14 05:46:52,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,132 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 [2022-12-14 05:46:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,146 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 [2022-12-14 05:46:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,159 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 [2022-12-14 05:46:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,183 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 [2022-12-14 05:46:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,201 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 [2022-12-14 05:46:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,214 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 [2022-12-14 05:46:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,250 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 [2022-12-14 05:46:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,263 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 [2022-12-14 05:46:52,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,277 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 [2022-12-14 05:46:52,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,321 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 [2022-12-14 05:46:52,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,339 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 [2022-12-14 05:46:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,355 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 [2022-12-14 05:46:52,398 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 [2022-12-14 05:46:52,404 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 [2022-12-14 05:46:52,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:52,422 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 [2022-12-14 05:46:52,428 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 [2022-12-14 05:46:52,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:46:52,445 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 [2022-12-14 05:46:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,453 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 [2022-12-14 05:46:52,468 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 [2022-12-14 05:46:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 05:46:52,485 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 [2022-12-14 05:46:52,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:52,518 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:46:52,518 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 [2022-12-14 05:46:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,529 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 [2022-12-14 05:46:52,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:52,553 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:46:52,553 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 [2022-12-14 05:46:52,592 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 [2022-12-14 05:46:52,597 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 [2022-12-14 05:46:52,606 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 [2022-12-14 05:46:52,611 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 [2022-12-14 05:46:52,616 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 [2022-12-14 05:46:52,625 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 [2022-12-14 05:46:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,631 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 [2022-12-14 05:46:52,636 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 [2022-12-14 05:46:52,646 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 [2022-12-14 05:46:52,652 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 [2022-12-14 05:46:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,661 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 [2022-12-14 05:46:52,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,678 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 [2022-12-14 05:46:52,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:52,692 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:46:52,693 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 [2022-12-14 05:46:52,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:52,712 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:46:52,712 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 [2022-12-14 05:46:52,839 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-12-14 05:46:52,839 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 25 treesize of output 29 [2022-12-14 05:46:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,875 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 0 case distinctions, treesize of input 75 treesize of output 57 [2022-12-14 05:46:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:52,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:52,888 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 2 case distinctions, treesize of input 66 treesize of output 44 [2022-12-14 05:46:52,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:53,051 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:46:53,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:46:53,139 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:46:53,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:46:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,175 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:46:53,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:46:53,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:53,500 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:46:53,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:46:53,585 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:46:53,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:46:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,613 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:46:53,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:46:53,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:53,827 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 [2022-12-14 05:46:53,832 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 [2022-12-14 05:46:53,847 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 [2022-12-14 05:46:53,853 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 [2022-12-14 05:46:53,859 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 [2022-12-14 05:46:53,901 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 [2022-12-14 05:46:53,923 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 [2022-12-14 05:46:53,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:53,940 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:53,941 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 [2022-12-14 05:46:53,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:53,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:53,998 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:53,998 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 [2022-12-14 05:46:54,024 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 [2022-12-14 05:46:54,034 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 [2022-12-14 05:46:54,074 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:46:56,131 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4260#(and (< |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |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|) (not (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1)) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:46:56,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:46:56,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:56,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-14 05:46:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53175714] [2022-12-14 05:46:56,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:46:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:46:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:46:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-12-14 05:46:56,132 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:46:56,161 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2022-12-14 05:46:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:46:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2022-12-14 05:46:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:46:56,161 INFO L225 Difference]: With dead ends: 80 [2022-12-14 05:46:56,161 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 05:46:56,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:46:56,162 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:46:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 78 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:46:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 05:46:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-12-14 05:46:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 78 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2022-12-14 05:46:56,167 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 28 [2022-12-14 05:46:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:56,167 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2022-12-14 05:46:56,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:46:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2022-12-14 05:46:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:46:56,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:56,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:56,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:46:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:56,370 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:46:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1819477624, now seen corresponding path program 1 times [2022-12-14 05:46:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:56,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021057751] [2022-12-14 05:46:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:56,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021057751] [2022-12-14 05:46:56,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021057751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:46:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661622279] [2022-12-14 05:46:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:56,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:46:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:56,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:46:56,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:46:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:46:56,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:46:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:56,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:46:56,610 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 05:46:56,611 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 12 treesize of output 11 [2022-12-14 05:46:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:46:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661622279] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:46:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319831827] [2022-12-14 05:46:56,620 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 05:46:56,620 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:46:56,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:46:56,620 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:46:56,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:46:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,635 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 [2022-12-14 05:46:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,654 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 [2022-12-14 05:46:56,670 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 [2022-12-14 05:46:56,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,678 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 [2022-12-14 05:46:56,685 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 15 treesize of output 1 [2022-12-14 05:46:56,699 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 [2022-12-14 05:46:56,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,710 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 [2022-12-14 05:46:56,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:46:56,734 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 [2022-12-14 05:46:56,741 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 [2022-12-14 05:46:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,753 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 [2022-12-14 05:46:56,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,811 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 [2022-12-14 05:46:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,843 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 [2022-12-14 05:46:56,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,854 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 [2022-12-14 05:46:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,867 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 34 treesize of output 25 [2022-12-14 05:46:56,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,897 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 [2022-12-14 05:46:56,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,913 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 [2022-12-14 05:46:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,927 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 [2022-12-14 05:46:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,951 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 [2022-12-14 05:46:56,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,970 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 [2022-12-14 05:46:56,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:56,985 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 [2022-12-14 05:46:57,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,025 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 [2022-12-14 05:46:57,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,043 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 [2022-12-14 05:46:57,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,058 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 [2022-12-14 05:46:57,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,270 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 [2022-12-14 05:46:57,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,305 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 [2022-12-14 05:46:57,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,320 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 [2022-12-14 05:46:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,335 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 [2022-12-14 05:46:57,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,361 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 [2022-12-14 05:46:57,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,379 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 [2022-12-14 05:46:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,394 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 [2022-12-14 05:46:57,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,421 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 [2022-12-14 05:46:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,434 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 [2022-12-14 05:46:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,447 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 [2022-12-14 05:46:57,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,491 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 [2022-12-14 05:46:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,511 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 [2022-12-14 05:46:57,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,527 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 [2022-12-14 05:46:57,768 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-12-14 05:46:57,768 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 25 treesize of output 29 [2022-12-14 05:46:57,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:46:57,804 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 2 case distinctions, treesize of input 84 treesize of output 62 [2022-12-14 05:46:57,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:57,817 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 0 case distinctions, treesize of input 63 treesize of output 45 [2022-12-14 05:46:57,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:58,027 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:46:58,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:46:58,113 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:46:58,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:46:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:58,138 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:46:58,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:46:58,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:58,521 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:46:58,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:46:58,613 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:46:58,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:46:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:58,644 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:46:58,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:46:58,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:46:58,911 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 [2022-12-14 05:46:58,918 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 [2022-12-14 05:46:58,934 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 [2022-12-14 05:46:58,940 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 11 treesize of output 7 [2022-12-14 05:46:58,947 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 [2022-12-14 05:46:58,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:58,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:58,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:58,995 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:58,995 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 [2022-12-14 05:46:59,023 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 [2022-12-14 05:46:59,029 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 [2022-12-14 05:46:59,061 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 [2022-12-14 05:46:59,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:59,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:59,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:59,078 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:46:59,078 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 [2022-12-14 05:46:59,099 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 [2022-12-14 05:46:59,137 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:02,198 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4608#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_remove_first_~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_first_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.offset|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_remove_first_~head#1.base|) 1)) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:47:02,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:02,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:02,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-12-14 05:47:02,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11704784] [2022-12-14 05:47:02,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:02,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:47:02,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:47:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:47:02,199 INFO L87 Difference]: Start difference. First operand 79 states and 92 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) [2022-12-14 05:47:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:02,237 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2022-12-14 05:47:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:47:02,237 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 [2022-12-14 05:47:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:02,237 INFO L225 Difference]: With dead ends: 77 [2022-12-14 05:47:02,237 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 05:47:02,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:47:02,238 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:02,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 24 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:47:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 05:47:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-14 05:47:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 76 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) [2022-12-14 05:47:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2022-12-14 05:47:02,240 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 28 [2022-12-14 05:47:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:02,240 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2022-12-14 05:47:02,241 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) [2022-12-14 05:47:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2022-12-14 05:47:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 05:47:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:02,241 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:02,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:47:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:02,443 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1783589671, now seen corresponding path program 2 times [2022-12-14 05:47:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:02,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691319035] [2022-12-14 05:47:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:47:02,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691319035] [2022-12-14 05:47:02,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691319035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129814968] [2022-12-14 05:47:02,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:47:02,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:02,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:47:02,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:47:02,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:47:02,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 05:47:02,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:02,616 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 [2022-12-14 05:47:02,621 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 [2022-12-14 05:47:02,634 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 05:47:02,638 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 [2022-12-14 05:47:02,732 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-12-14 05:47:02,732 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-12-14 05:47:02,742 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-12-14 05:47:02,742 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2022-12-14 05:47:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 05:47:02,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:47:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129814968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:47:02,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:47:02,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 12 [2022-12-14 05:47:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681343116] [2022-12-14 05:47:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:47:02,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:47:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:47:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:47:02,757 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2022-12-14 05:47:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:03,121 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2022-12-14 05:47:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:47:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 29 [2022-12-14 05:47:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:03,121 INFO L225 Difference]: With dead ends: 135 [2022-12-14 05:47:03,121 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 05:47:03,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:47:03,122 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:03,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 222 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:47:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 05:47:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 79. [2022-12-14 05:47:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.3) internal successors, (91), 78 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) [2022-12-14 05:47:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2022-12-14 05:47:03,124 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 29 [2022-12-14 05:47:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:03,124 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2022-12-14 05:47:03,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2022-12-14 05:47:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2022-12-14 05:47:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 05:47:03,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:03,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:03,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:47:03,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 05:47:03,326 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 569231526, now seen corresponding path program 1 times [2022-12-14 05:47:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:03,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625900256] [2022-12-14 05:47:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:04,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:04,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625900256] [2022-12-14 05:47:04,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625900256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:04,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055548352] [2022-12-14 05:47:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:04,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:04,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:04,191 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:04,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:47:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:04,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 05:47:04,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:04,323 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 [2022-12-14 05:47:04,403 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:47:04,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 05:47:04,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:04,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:47:04,517 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:47:04,517 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 27 treesize of output 28 [2022-12-14 05:47:04,677 INFO L321 Elim1Store]: treesize reduction 4, result has 88.6 percent of original size [2022-12-14 05:47:04,678 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 5 case distinctions, treesize of input 46 treesize of output 48 [2022-12-14 05:47:04,770 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 16 treesize of output 8 [2022-12-14 05:47:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:04,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:04,889 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 27 treesize of output 19 [2022-12-14 05:47:05,025 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1544 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1544))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= (select (select .cse1 .cse0) 4) 0)))))) is different from false [2022-12-14 05:47:05,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:05,126 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 75 treesize of output 50 [2022-12-14 05:47:05,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:05,159 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 111 treesize of output 154 [2022-12-14 05:47:05,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:05,172 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 111 treesize of output 103 [2022-12-14 05:47:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 05:47:05,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055548352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:05,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2047368775] [2022-12-14 05:47:05,841 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 05:47:05,841 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:05,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:05,841 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:05,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:05,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,859 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 [2022-12-14 05:47:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,876 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 [2022-12-14 05:47:05,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,894 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 [2022-12-14 05:47:05,900 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 [2022-12-14 05:47:05,906 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 [2022-12-14 05:47:05,921 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 [2022-12-14 05:47:05,926 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 [2022-12-14 05:47:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,933 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 [2022-12-14 05:47:05,951 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 [2022-12-14 05:47:05,958 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 [2022-12-14 05:47:05,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:05,975 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 [2022-12-14 05:47:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,020 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 [2022-12-14 05:47:06,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,050 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 [2022-12-14 05:47:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,061 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 [2022-12-14 05:47:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,074 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 [2022-12-14 05:47:06,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,095 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 [2022-12-14 05:47:06,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,111 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 [2022-12-14 05:47:06,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 05:47:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,146 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 [2022-12-14 05:47:06,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,162 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 [2022-12-14 05:47:06,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,177 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 [2022-12-14 05:47:06,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,217 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 [2022-12-14 05:47:06,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:06,230 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 [2022-12-14 05:47:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:06,244 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 [2022-12-14 05:47:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,443 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 05:47:06,444 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 [2022-12-14 05:47:06,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,488 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 [2022-12-14 05:47:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,500 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 [2022-12-14 05:47:06,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,510 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 [2022-12-14 05:47:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,539 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 [2022-12-14 05:47:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,553 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 [2022-12-14 05:47:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,566 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 [2022-12-14 05:47:06,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,591 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 [2022-12-14 05:47:06,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,610 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 [2022-12-14 05:47:06,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,622 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 [2022-12-14 05:47:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,672 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 [2022-12-14 05:47:06,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,687 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 [2022-12-14 05:47:06,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,703 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 [2022-12-14 05:47:06,738 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 [2022-12-14 05:47:06,743 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 [2022-12-14 05:47:06,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:06,758 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 [2022-12-14 05:47:06,763 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 [2022-12-14 05:47:06,774 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 [2022-12-14 05:47:06,780 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:06,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,789 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 [2022-12-14 05:47:06,799 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 [2022-12-14 05:47:06,807 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 [2022-12-14 05:47:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,815 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 [2022-12-14 05:47:06,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:06,846 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:47:06,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2022-12-14 05:47:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,860 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 [2022-12-14 05:47:06,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:06,875 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:47:06,875 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 [2022-12-14 05:47:06,921 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 [2022-12-14 05:47:06,927 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 [2022-12-14 05:47:06,936 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 [2022-12-14 05:47:06,940 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 15 treesize of output 1 [2022-12-14 05:47:06,945 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 [2022-12-14 05:47:06,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,956 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 [2022-12-14 05:47:06,961 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 [2022-12-14 05:47:06,965 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 [2022-12-14 05:47:06,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:06,980 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 [2022-12-14 05:47:06,986 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 [2022-12-14 05:47:06,993 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 [2022-12-14 05:47:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:07,010 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 [2022-12-14 05:47:07,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:07,024 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:47:07,024 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 [2022-12-14 05:47:07,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:07,042 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:47:07,042 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 [2022-12-14 05:47:07,187 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-12-14 05:47:07,187 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 25 treesize of output 29 [2022-12-14 05:47:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:07,223 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 0 case distinctions, treesize of input 75 treesize of output 57 [2022-12-14 05:47:07,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:07,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:07,237 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 2 case distinctions, treesize of input 72 treesize of output 50 [2022-12-14 05:47:07,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:07,377 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:07,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:07,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:07,467 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:47:07,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:47:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:07,498 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:47:07,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:47:07,768 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:07,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:07,846 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-12-14 05:47:07,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 117 [2022-12-14 05:47:07,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:07,872 INFO L321 Elim1Store]: treesize reduction 57, result has 13.6 percent of original size [2022-12-14 05:47:07,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 79 [2022-12-14 05:47:07,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:08,069 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 [2022-12-14 05:47:08,073 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 [2022-12-14 05:47:08,087 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 [2022-12-14 05:47:08,092 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 11 treesize of output 7 [2022-12-14 05:47:08,097 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 [2022-12-14 05:47:08,140 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 [2022-12-14 05:47:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:08,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:08,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:08,155 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:08,155 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 [2022-12-14 05:47:08,179 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 [2022-12-14 05:47:08,221 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 [2022-12-14 05:47:08,228 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 [2022-12-14 05:47:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:08,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:08,243 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:08,244 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 [2022-12-14 05:47:08,295 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:11,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5323#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_remove_first_~head#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_remove_first_#t~mem6#1.base|) 1)) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_first_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.offset|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |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) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 05:47:11,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:11,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:11,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 48 [2022-12-14 05:47:11,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147483201] [2022-12-14 05:47:11,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:11,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 05:47:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:11,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 05:47:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3747, Unknown=11, NotChecked=124, Total=4160 [2022-12-14 05:47:11,663 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 48 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 48 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) [2022-12-14 05:47:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:13,133 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2022-12-14 05:47:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 05:47:13,133 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 48 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) Word has length 29 [2022-12-14 05:47:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:13,133 INFO L225 Difference]: With dead ends: 74 [2022-12-14 05:47:13,133 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 05:47:13,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=705, Invalid=6260, Unknown=11, NotChecked=164, Total=7140 [2022-12-14 05:47:13,135 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 237 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:13,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 351 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1018 Invalid, 0 Unknown, 62 Unchecked, 0.5s Time] [2022-12-14 05:47:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 05:47:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2022-12-14 05:47:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 67 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) [2022-12-14 05:47:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2022-12-14 05:47:13,136 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 29 [2022-12-14 05:47:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:13,136 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2022-12-14 05:47:13,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 48 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) [2022-12-14 05:47:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2022-12-14 05:47:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:47:13,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:13,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:13,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 05:47:13,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:13,338 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1270700916, now seen corresponding path program 3 times [2022-12-14 05:47:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984642347] [2022-12-14 05:47:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:13,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984642347] [2022-12-14 05:47:13,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984642347] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478345200] [2022-12-14 05:47:13,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:47:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:13,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:13,450 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:13,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:47:13,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:47:13,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:47:13,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:47:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:13,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:47:13,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478345200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:47:13,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:47:13,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-14 05:47:13,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248214520] [2022-12-14 05:47:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:47:13,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:47:13,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:47:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:47:13,619 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:13,631 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-12-14 05:47:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:47:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 05:47:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:13,631 INFO L225 Difference]: With dead ends: 55 [2022-12-14 05:47:13,631 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 05:47:13,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:47:13,632 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:13,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:47:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 05:47:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-14 05:47:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-12-14 05:47:13,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 30 [2022-12-14 05:47:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:13,633 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-12-14 05:47:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-12-14 05:47:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:47:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:13,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:13,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:47:13,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 05:47:13,835 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash -830046294, now seen corresponding path program 1 times [2022-12-14 05:47:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:13,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224669003] [2022-12-14 05:47:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:14,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224669003] [2022-12-14 05:47:14,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224669003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789906592] [2022-12-14 05:47:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:14,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:14,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:14,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:14,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:47:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:14,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-14 05:47:14,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:14,590 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 [2022-12-14 05:47:14,653 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:47:14,653 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 [2022-12-14 05:47:14,686 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 13 treesize of output 9 [2022-12-14 05:47:14,713 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 [2022-12-14 05:47:14,734 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:47:14,735 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 23 treesize of output 26 [2022-12-14 05:47:14,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:47:15,001 INFO L321 Elim1Store]: treesize reduction 64, result has 22.0 percent of original size [2022-12-14 05:47:15,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 46 [2022-12-14 05:47:15,005 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 22 treesize of output 16 [2022-12-14 05:47:15,230 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:47:15,230 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 [2022-12-14 05:47:15,318 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:15,318 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 59 [2022-12-14 05:47:15,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:15,532 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 77 [2022-12-14 05:47:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:15,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:15,820 INFO L321 Elim1Store]: treesize reduction 13, result has 78.7 percent of original size [2022-12-14 05:47:15,820 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 76 treesize of output 99 [2022-12-14 05:47:16,265 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 65 treesize of output 49 [2022-12-14 05:47:16,456 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1821 (Array Int Int)) (v_ArrVal_1820 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1820))) (let ((.cse2 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse0 (select (select .cse1 .cse2) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (or (not (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_1821) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 |ULTIMATE.start_main_~#s~0#1.base|) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2))))))) is different from false [2022-12-14 05:47:16,477 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1821 (Array Int Int)) (v_ArrVal_1820 (Array Int Int)) (v_ArrVal_1818 Int) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1818)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1820))) (let ((.cse0 (select (select .cse2 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse1 (select (select .cse2 .cse0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= .cse1 (select (select (store .cse2 .cse1 v_ArrVal_1821) |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse1 |ULTIMATE.start_main_~#s~0#1.base|)))))) is different from false [2022-12-14 05:47:16,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:16,486 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 197 treesize of output 97 [2022-12-14 05:47:16,504 INFO L321 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2022-12-14 05:47:16,504 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 832 treesize of output 590 [2022-12-14 05:47:16,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:16,519 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 568 treesize of output 458 [2022-12-14 05:47:16,526 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 380 treesize of output 364 [2022-12-14 05:47:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 05:47:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789906592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512477954] [2022-12-14 05:47:16,699 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 05:47:16,699 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:16,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:16,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:16,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,720 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 [2022-12-14 05:47:16,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,742 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 [2022-12-14 05:47:16,761 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:16,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,777 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 [2022-12-14 05:47:16,795 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 [2022-12-14 05:47:16,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,807 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 [2022-12-14 05:47:16,817 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 [2022-12-14 05:47:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,838 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 [2022-12-14 05:47:16,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 05:47:16,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 05:47:16,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,917 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 [2022-12-14 05:47:16,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,952 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 [2022-12-14 05:47:16,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,965 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 [2022-12-14 05:47:16,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,985 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 [2022-12-14 05:47:17,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,013 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 [2022-12-14 05:47:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,033 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 [2022-12-14 05:47:17,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,050 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 [2022-12-14 05:47:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,084 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 [2022-12-14 05:47:17,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,097 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 [2022-12-14 05:47:17,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,114 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 [2022-12-14 05:47:17,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:17,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:47:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:17,166 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 [2022-12-14 05:47:17,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,186 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 [2022-12-14 05:47:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,381 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 [2022-12-14 05:47:17,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,420 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 [2022-12-14 05:47:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,439 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 [2022-12-14 05:47:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,450 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 [2022-12-14 05:47:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,481 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 [2022-12-14 05:47:17,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,492 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 32 treesize of output 34 [2022-12-14 05:47:17,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,504 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 [2022-12-14 05:47:17,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,529 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 [2022-12-14 05:47:17,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,543 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 [2022-12-14 05:47:17,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,555 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 [2022-12-14 05:47:17,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,600 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 [2022-12-14 05:47:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,614 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 [2022-12-14 05:47:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,625 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 [2022-12-14 05:47:17,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:17,880 INFO L321 Elim1Store]: treesize reduction 46, result has 49.5 percent of original size [2022-12-14 05:47:17,880 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 5 case distinctions, treesize of input 79 treesize of output 92 [2022-12-14 05:47:17,913 INFO L321 Elim1Store]: treesize reduction 58, result has 30.1 percent of original size [2022-12-14 05:47:17,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 76 [2022-12-14 05:47:17,931 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 [2022-12-14 05:47:18,156 INFO L321 Elim1Store]: treesize reduction 14, result has 65.0 percent of original size [2022-12-14 05:47:18,156 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 33 treesize of output 49 [2022-12-14 05:47:18,325 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 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 05:47:18,333 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:47:18,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:19,014 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 [2022-12-14 05:47:19,020 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 [2022-12-14 05:47:19,027 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 [2022-12-14 05:47:19,092 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:19,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:19,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:19,145 INFO L321 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-12-14 05:47:19,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2022-12-14 05:47:19,177 INFO L321 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-12-14 05:47:19,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 61 [2022-12-14 05:47:19,375 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 [2022-12-14 05:47:19,381 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 [2022-12-14 05:47:19,388 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 [2022-12-14 05:47:19,456 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:19,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:19,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:19,511 INFO L321 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-12-14 05:47:19,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2022-12-14 05:47:19,556 INFO L321 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-12-14 05:47:19,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 61 [2022-12-14 05:47:19,995 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 [2022-12-14 05:47:20,001 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 [2022-12-14 05:47:20,014 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 [2022-12-14 05:47:20,020 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 [2022-12-14 05:47:20,025 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 [2022-12-14 05:47:20,064 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 [2022-12-14 05:47:20,071 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 [2022-12-14 05:47:20,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:20,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:20,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:20,085 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:20,085 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 [2022-12-14 05:47:20,139 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 [2022-12-14 05:47:20,146 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 [2022-12-14 05:47:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:20,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:20,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:20,162 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:20,162 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 [2022-12-14 05:47:20,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:24,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5952#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_remove_first_~head#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_remove_first_#t~mem6#1.base|) 1)) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_first_#in~head#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 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|))' at error location [2022-12-14 05:47:24,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:24,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:24,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 50 [2022-12-14 05:47:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975350962] [2022-12-14 05:47:24,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:47:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:47:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3967, Unknown=13, NotChecked=258, Total=4556 [2022-12-14 05:47:24,160 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 51 states, 50 states have (on average 1.76) internal successors, (88), 51 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:25,666 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-12-14 05:47:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 05:47:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.76) internal successors, (88), 51 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 05:47:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:25,667 INFO L225 Difference]: With dead ends: 68 [2022-12-14 05:47:25,667 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 05:47:25,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=559, Invalid=5598, Unknown=13, NotChecked=310, Total=6480 [2022-12-14 05:47:25,668 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 198 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:25,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 302 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 782 Invalid, 0 Unknown, 117 Unchecked, 0.5s Time] [2022-12-14 05:47:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 05:47:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2022-12-14 05:47:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-12-14 05:47:25,669 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 30 [2022-12-14 05:47:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:25,670 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-12-14 05:47:25,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.76) internal successors, (88), 51 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-12-14 05:47:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:47:25,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:25,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:25,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 05:47:25,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:25,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -830046293, now seen corresponding path program 1 times [2022-12-14 05:47:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262485090] [2022-12-14 05:47:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:26,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:26,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262485090] [2022-12-14 05:47:26,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262485090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:26,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341961965] [2022-12-14 05:47:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:26,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:26,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:26,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:26,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:47:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:26,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-14 05:47:26,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:26,477 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 [2022-12-14 05:47:26,539 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:47:26,540 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 [2022-12-14 05:47:26,570 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 [2022-12-14 05:47:26,592 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 [2022-12-14 05:47:26,601 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 [2022-12-14 05:47:26,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-12-14 05:47:26,733 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-12-14 05:47:26,733 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 5 case distinctions, treesize of input 27 treesize of output 29 [2022-12-14 05:47:26,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:26,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:26,878 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 17 treesize of output 9 [2022-12-14 05:47:26,881 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 [2022-12-14 05:47:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:26,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:26,983 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 60 treesize of output 56 [2022-12-14 05:47:26,985 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 90 treesize of output 82 [2022-12-14 05:47:27,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,075 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 8 treesize of output 6 [2022-12-14 05:47:27,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-12-14 05:47:27,343 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1952 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int) (v_ArrVal_1951 Int)) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1951)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1952))) (let ((.cse1 (select (select .cse0 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (<= 0 (+ (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ .cse1 4)) 4)) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))))) is different from false [2022-12-14 05:47:27,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:27,351 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 78 treesize of output 53 [2022-12-14 05:47:27,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:27,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 122 [2022-12-14 05:47:27,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:27,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 105 [2022-12-14 05:47:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 05:47:27,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341961965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:27,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2113208655] [2022-12-14 05:47:27,738 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 05:47:27,738 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:27,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:27,738 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:27,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,751 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 [2022-12-14 05:47:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,769 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 [2022-12-14 05:47:27,791 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 [2022-12-14 05:47:27,798 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 [2022-12-14 05:47:27,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,807 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 [2022-12-14 05:47:27,821 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 [2022-12-14 05:47:27,831 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 [2022-12-14 05:47:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,838 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 [2022-12-14 05:47:27,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 05:47:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,862 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 [2022-12-14 05:47:27,869 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 [2022-12-14 05:47:27,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,920 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 [2022-12-14 05:47:27,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,965 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 [2022-12-14 05:47:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,980 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 [2022-12-14 05:47:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:27,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 05:47:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,022 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 [2022-12-14 05:47:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,036 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 [2022-12-14 05:47:28,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,051 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 [2022-12-14 05:47:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,082 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 [2022-12-14 05:47:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,098 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 [2022-12-14 05:47:28,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,112 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 [2022-12-14 05:47:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:28,147 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 [2022-12-14 05:47:28,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:28,163 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 [2022-12-14 05:47:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,182 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 [2022-12-14 05:47:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,380 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 05:47:28,380 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 [2022-12-14 05:47:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,426 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 [2022-12-14 05:47:28,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,441 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 [2022-12-14 05:47:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,452 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 [2022-12-14 05:47:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,482 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 [2022-12-14 05:47:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,492 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 32 treesize of output 34 [2022-12-14 05:47:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,502 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 [2022-12-14 05:47:28,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,533 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 [2022-12-14 05:47:28,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,548 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 [2022-12-14 05:47:28,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,559 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 [2022-12-14 05:47:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,602 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 [2022-12-14 05:47:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,615 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 [2022-12-14 05:47:28,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,633 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 [2022-12-14 05:47:28,669 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 [2022-12-14 05:47:28,674 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 [2022-12-14 05:47:28,682 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 [2022-12-14 05:47:28,685 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 15 treesize of output 1 [2022-12-14 05:47:28,690 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 [2022-12-14 05:47:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,705 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 [2022-12-14 05:47:28,711 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 [2022-12-14 05:47:28,719 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 [2022-12-14 05:47:28,733 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 [2022-12-14 05:47:28,741 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 [2022-12-14 05:47:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,752 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 [2022-12-14 05:47:28,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:28,780 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:47:28,780 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 [2022-12-14 05:47:28,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,790 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 [2022-12-14 05:47:28,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:28,811 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:47:28,811 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 [2022-12-14 05:47:28,859 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 [2022-12-14 05:47:28,866 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 [2022-12-14 05:47:28,876 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 [2022-12-14 05:47:28,883 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 [2022-12-14 05:47:28,890 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 [2022-12-14 05:47:28,902 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 [2022-12-14 05:47:28,908 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 [2022-12-14 05:47:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,915 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 [2022-12-14 05:47:28,926 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 [2022-12-14 05:47:28,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,934 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 [2022-12-14 05:47:28,942 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 [2022-12-14 05:47:28,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:28,960 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 [2022-12-14 05:47:28,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:28,985 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:47:28,985 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 [2022-12-14 05:47:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:29,006 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 05:47:29,006 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 [2022-12-14 05:47:29,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:29,144 INFO L321 Elim1Store]: treesize reduction 46, result has 49.5 percent of original size [2022-12-14 05:47:29,145 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 5 case distinctions, treesize of input 79 treesize of output 92 [2022-12-14 05:47:29,191 INFO L321 Elim1Store]: treesize reduction 58, result has 30.1 percent of original size [2022-12-14 05:47:29,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 76 [2022-12-14 05:47:29,210 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 [2022-12-14 05:47:29,462 INFO L321 Elim1Store]: treesize reduction 14, result has 65.0 percent of original size [2022-12-14 05:47:29,462 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 33 treesize of output 49 [2022-12-14 05:47:29,588 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 05:47:29,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:29,651 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 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-14 05:47:30,273 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 [2022-12-14 05:47:30,279 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 [2022-12-14 05:47:30,284 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 [2022-12-14 05:47:30,353 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:30,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:30,402 INFO L321 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-12-14 05:47:30,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2022-12-14 05:47:30,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:30,439 INFO L321 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-12-14 05:47:30,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 61 [2022-12-14 05:47:30,655 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 [2022-12-14 05:47:30,662 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 [2022-12-14 05:47:30,668 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 [2022-12-14 05:47:30,739 INFO L321 Elim1Store]: treesize reduction 36, result has 58.6 percent of original size [2022-12-14 05:47:30,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 77 [2022-12-14 05:47:30,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:47:30,806 INFO L321 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-12-14 05:47:30,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 61 [2022-12-14 05:47:30,848 INFO L321 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-12-14 05:47:30,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2022-12-14 05:47:31,228 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 [2022-12-14 05:47:31,233 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 [2022-12-14 05:47:31,246 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 [2022-12-14 05:47:31,252 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 [2022-12-14 05:47:31,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:31,298 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 [2022-12-14 05:47:31,317 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 [2022-12-14 05:47:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:31,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:31,331 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:31,331 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 [2022-12-14 05:47:31,384 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 [2022-12-14 05:47:31,390 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 [2022-12-14 05:47:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:31,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:31,405 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:47:31,406 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 [2022-12-14 05:47:31,447 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:34,642 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6344#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_remove_first_~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.base|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.offset|) (<= 0 |ULTIMATE.start_dll_remove_first_#in~head#1.base|) (<= |ULTIMATE.start_dll_remove_first_#in~head#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~data#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 (+ |ULTIMATE.start_dll_create_~len#1| 1)) (<= 0 |ULTIMATE.start_dll_remove_first_~head#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_dll_remove_first_#t~mem6#1.offset| 8) (select |#length| |ULTIMATE.start_dll_remove_first_#t~mem6#1.base|))) (not (<= 0 (+ |ULTIMATE.start_dll_remove_first_#t~mem6#1.offset| 4)))) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 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|))' at error location [2022-12-14 05:47:34,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:34,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:34,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 46 [2022-12-14 05:47:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303962361] [2022-12-14 05:47:34,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:34,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 05:47:34,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 05:47:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3604, Unknown=10, NotChecked=122, Total=4032 [2022-12-14 05:47:34,644 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 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) [2022-12-14 05:47:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:37,802 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2022-12-14 05:47:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 05:47:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 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) Word has length 30 [2022-12-14 05:47:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:37,803 INFO L225 Difference]: With dead ends: 95 [2022-12-14 05:47:37,803 INFO L226 Difference]: Without dead ends: 95 [2022-12-14 05:47:37,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=640, Invalid=5516, Unknown=10, NotChecked=154, Total=6320 [2022-12-14 05:47:37,804 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 378 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:37,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 470 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 889 Invalid, 0 Unknown, 74 Unchecked, 0.5s Time] [2022-12-14 05:47:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-14 05:47:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 57. [2022-12-14 05:47:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.25) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-12-14 05:47:37,806 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 30 [2022-12-14 05:47:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:37,806 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-12-14 05:47:37,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 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) [2022-12-14 05:47:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-12-14 05:47:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 05:47:37,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:37,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:37,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 05:47:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:38,008 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-12-14 05:47:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1189479647, now seen corresponding path program 1 times [2022-12-14 05:47:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:38,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151066140] [2022-12-14 05:47:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:39,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151066140] [2022-12-14 05:47:39,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151066140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547689291] [2022-12-14 05:47:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:39,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:39,639 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:39,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd5297ca-251a-4340-a50b-ce35f06db7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 05:47:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 106 conjunts are in the unsatisfiable core [2022-12-14 05:47:39,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:39,803 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 [2022-12-14 05:47:39,870 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 [2022-12-14 05:47:39,874 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 [2022-12-14 05:47:39,923 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 [2022-12-14 05:47:39,934 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 [2022-12-14 05:47:40,010 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 05:47:40,010 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 [2022-12-14 05:47:40,083 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 [2022-12-14 05:47:40,088 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 14 treesize of output 16 [2022-12-14 05:47:40,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 05:47:40,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 05:47:40,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:47:40,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:47:40,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:40,229 INFO L321 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2022-12-14 05:47:40,229 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 110 treesize of output 73 [2022-12-14 05:47:40,240 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 05:47:40,240 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 1 case distinctions, treesize of input 54 treesize of output 47 [2022-12-14 05:47:40,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:40,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:40,816 INFO L321 Elim1Store]: treesize reduction 226, result has 12.1 percent of original size [2022-12-14 05:47:40,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 148 treesize of output 97 [2022-12-14 05:47:40,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:40,860 INFO L321 Elim1Store]: treesize reduction 216, result has 11.8 percent of original size [2022-12-14 05:47:40,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 148 treesize of output 133 [2022-12-14 05:47:41,074 INFO L321 Elim1Store]: treesize reduction 77, result has 14.4 percent of original size [2022-12-14 05:47:41,075 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 5 new quantified variables, introduced 4 case distinctions, treesize of input 151 treesize of output 87 [2022-12-14 05:47:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:41,097 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-12-14 05:47:41,097 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 59 [2022-12-14 05:47:41,766 INFO L321 Elim1Store]: treesize reduction 80, result has 66.2 percent of original size [2022-12-14 05:47:41,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 185 treesize of output 287 [2022-12-14 05:47:41,898 INFO L321 Elim1Store]: treesize reduction 72, result has 64.9 percent of original size [2022-12-14 05:47:41,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 225 treesize of output 277 [2022-12-14 05:47:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:51,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:48:19,017 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:19,017 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1324 treesize of output 940 [2022-12-14 05:48:19,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:19,038 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 944 treesize of output 700 [2022-12-14 05:48:19,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:19,080 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1324 treesize of output 1040 [2022-12-14 05:48:19,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:19,101 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1044 treesize of output 700 [2022-12-14 05:48:19,145 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (and (forall ((v_arrayElimArr_11 (Array Int Int)) (v_arrayElimArr_12 (Array Int Int)) (v_ArrVal_2099 Int) (v_ArrVal_2101 Int) (v_ArrVal_2104 Int)) (let ((.cse4 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_12))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 v_ArrVal_2099)))) (.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_11))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 v_ArrVal_2101))))) (let ((.cse1 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse0 (+ (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_12 .cse0))) (not (= .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (= (let ((.cse3 (select (select .cse4 .cse1) .cse0))) (select (let ((.cse5 (select (select .cse6 .cse1) .cse0))) (select (let ((.cse2 (store .cse4 .cse5 (store (select .cse4 .cse5) (+ .cse3 8) v_ArrVal_2104)))) (store .cse2 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse3))) .cse5)) (+ .cse3 4))) 0) (not (= (select v_arrayElimArr_11 .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)))))) (forall ((v_arrayElimArr_10 (Array Int Int)) (v_ArrVal_2099 Int) (v_ArrVal_2101 Int) (v_ArrVal_2105 Int) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse16 (let ((.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_10))) (store .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 v_ArrVal_2099)))) (.cse13 (let ((.cse17 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_9))) (store .cse17 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse17 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse8 v_ArrVal_2101))))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse15 (+ 4 (select (select .cse16 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (or (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse10)) (= (let ((.cse14 (select (select .cse16 .cse10) .cse15))) (select (let ((.cse12 (select (select .cse13 .cse10) .cse15))) (select (let ((.cse11 (store .cse13 .cse12 (store (select .cse13 .cse12) (+ .cse14 8) v_ArrVal_2105)))) (store .cse11 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse12))) .cse12)) (+ .cse14 4))) 0) (not (= (select v_arrayElimArr_9 .cse15) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_10 .cse15))))))))) is different from false [2022-12-14 05:48:28,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:28,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1644 treesize of output 1064 [2022-12-14 05:48:28,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:48:28,555 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 1136 treesize of output 736 [2022-12-14 05:48:28,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:48:34,860 INFO L321 Elim1Store]: treesize reduction 554, result has 41.5 percent of original size [2022-12-14 05:48:34,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 19 new quantified variables, introduced 66 case distinctions, treesize of input 3290630 treesize of output 2973764 [2022-12-14 05:50:56,641 WARN L233 SmtUtils]: Spent 2.29m on a formula simplification. DAG size of input: 83 DAG size of output: 63 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:50:56,641 INFO L321 Elim1Store]: treesize reduction 74, result has 64.9 percent of original size [2022-12-14 05:50:56,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 95429372 treesize of output 87740130 [2022-12-14 05:53:17,773 WARN L233 SmtUtils]: Spent 2.35m on a formula simplification that was a NOOP. DAG size: 16739 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 05:53:44,642 INFO L217 Elim1Store]: Index analysis took 1985 ms